D. A bargain hunter purchases a "gold" crown at a flea market. After she gets home, she hangs it from a scale and finds its weight to be 7.84 N. She then weighs the crown while it is immersed in water, and now the scale reads 6.86 N. Is the crown made of pure gold? Find the density of the crown and compare it to the it to density of the gold. ​

The bullet's final momentum is 0 m/s, hence the change in momentum is 100 000 m/s.

The product of an object's mass and velocity is changed, and this is known as the change in momentum (p). To alter an object's momentum, a force is needed. The momentum of the item may change due to the applied force, as well as its direction. A substance's rate of change in momentum is inversely proportional to the applied resultant force and moves in the same direction. Therefore, we can state that the force applied equals the rate of change of momentum. It is well known that mass times velocity equals momentum..

Keep in mind that the temporal rate of change of the total momentum is zero when there are no outside forces operating on the system. In other words, the total momentum of the system does not vary over time if the sum of the external forces is zero. In this situation, we say that the system's momentum is conserved.

Mass (m)=10cm=0.01kg. Time T=0.003s

Velocity v f=300m/s,v i=0m/s Acceleration (a)= 0.003

300

=100000m/s 2

∴Force=mass×acceleration

Or, F=(0.01)×(100000)=1000N.

To know more about Momentum visit:

https://brainly.com/question/24030570

#SPJ1

Cocaine is a tropane alkaloid that has both local anesthetic and stimulant effects on the central nervous system (CNS).

Cocaine inhibits the re-uptake of dopamine, serotonin, and norepinephrine into pre-synaptic neurons by binding to the transport proteins for these neurotransmitters. As a result, the synaptic cleft accumulates more of the relevant neurotransmitters, which may boost postsynaptic receptor activation. Cocaine works by binding to and blocking the voltage-gated sodium channels in the membrane of neuronal cells to produce local anesthetic effects. Cocaine causes a reversible lack of feeling by stabilizing neuronal membranes, which prevents the start and conduction of nerve impulses. A benzoic acid ester, cocaine was first employed as a local anesthetic.

Learn more about Benzoic here-

https://brainly.com/question/24052816

#SPJ4

Explanation:

The heat engine follows the cycle shown in the figure, and the thermal efficiency is calculated to be 35.6%. For process 1-2, WS = -7.14 J, Q = -20.04 J, delta Eth = -12.90 J; for process 2-3, WS = -7.14 J, Q = -7.14 J, delta Eth = -12.90 J; for process 3-1, WS = 7.14 J, Q = 13.21 J, delta Eth = 5.07 J.

Part A: WS = -7.14 J, Q = -20.04 J, delta Eth = -12.90 J

Part B: WS = -7.14 J, Q = -7.14 J, delta Eth = -12.90 J

Part C: WS = 7.14 J, Q = 13.21 J, delta Eth = 5.07 J

Part D: Thermal Efficiency = 35.6%

Part A: WS = -7.14 J, Q = -20.04 J, delta Eth = -12.90 J

To calculate WS, Q and delta Eth for process 1-2, we need to calculate the change in internal energy between the two states. The internal energy of a monatomic gas is given by U = 3/2*n*R*T, where n is the number of moles of the gas, R is the ideal gas constant and T is the temperature.

For process 1-2:

U2 - U1 = -12.90J

To calculate Q, the equation Q = U2 - U1 can be used.

Q = U2 - U1 = -12.90J

To calculate WS, the equation WS = Q - (U2 - U1) can be used.

WS = Q - (U2 - U1) = -20.04J - (-12.90J) = -7.14J

Part B: WS = -7.14 J, Q = -7.14 J, delta Eth = -12.90 J

To calculate WS, Q and delta Eth for process 2-3, we need to calculate the change in internal energy between the two states. The internal energy of a monatomic gas is given by U = 3/2*n*R*T, where n is the number of moles of the gas, R is the ideal gas constant and T is the temperature.

For process 2-3:

U3 - U2 = -12.90J

To calculate Q, the equation Q = U3 - U2 can be used.

Q = U3 - U2 = -12.90J

To calculate WS, the equation WS = Q - (U3 - U2) can be used.

WS = Q - (U3 - U2) = -12.90J - (-12.90J) = -7.14J

Part C: WS = 7.14 J, Q = 13.21 J, delta Eth = 5.07 J

To calculate WS, Q and delta Eth for process 3-1, we need to calculate the change in internal energy between the two states. The internal energy of a monatomic gas is given by U = 3/2*n*R*T, where n is the number of moles of the gas, R is the ideal gas constant and T is the temperature.

For process 3-1:

U1 - U3 = 5.07J

To calculate Q, the equation Q = U1 - U3 can be used.

Q = U1 - U3 = 5.07J

To calculate WS, the equation WS = Q - (U1 - U3) can be used.

WS = Q - (U1 - U3) = 5.07J - (-5.07J) = 7.14

Part D: Thermal Efficiency = 35.6%

The thermal efficiency of a heat engine is given by the equation η = (Wnet/Qh) x 100, where Wnet is the net work output of the engine and Qh is the heat input to the engine.

For this heat engine, Wnet = WS1 + WS2 + WS3 = 7.14J + (-7.14J) + (-7.14J) = -7.14J and Qh = Q1 + Q2 + Q3 = -20.04J + (-7.14J) + 13

learn more about heat engine here

https://brainly.com/question/28034387

#SPJ4

365541.022 N   is   the force necessary to accelerate a 20,000-lbm rocket vertically upward at a rate of 100  [tex]\frac{ft}{sec^{2} }[/tex]  .

20000 lbm = 9071 . 8474 kg

100 [tex]\frac{ft}{sec^{2} }[/tex] = 30.48 [tex]\frac{mts}{sec^{2} }[/tex]

and g = 9.814  [tex]\frac{mts}{sec^{2} }[/tex]

force required = mass * (acceleration of  rocket + g)

= 9071.84748*(30.48+9.814)

= 365541.022 N

A force in physics is an impact that has the ability to change an object's motion. As a linear momentum, a force is one with both magnitude and direction. The force exerted on an object is equal to its mass times its acceleration, or Newton's second law, which is sometimes expressed as F=ma (a). Therefore, more force is required to accelerate an object with higher mass. Additionally, an item accelerates more quickly the more force it is under.

For such more questions on Force :

brainly.com/question/1046166

#SPJ4

Wext is negative So energy is transferred from the system to the environment.

What is Work Done?

Energy can be transferred by the use of force. Work done refers to the amount of energy used by a force to move an object. As a result, there is a direct connection between Work and Energy.

The sum of the displacement and the component of the applied force of the object in the displacement direction is the work done by a force.

Using energy conservation

Ki + Ui + Wext = Kf + Uf + dEth

Using given values in graph

4 + 1 + Wext = 1 + 2 + 1

Wext = 4 - 5

Wext = -1 J

Since Wext is negative So energy is transferred from the system to the environment.

Learn more about Work Done from given link

https://brainly.com/question/8119756

#SPJ4

The magnitude and direction of the resultant force (F=10N+5N+4N+6N) when four forces of magnitude 10N, 5N, 4N, and 6N operate on an object in the directions of north, west, east, and south, respectively, is 25N.

In terms of physics, magnitude is just "distance or quantity." It displays an object's size, direction, or motion in absolute or relative terms. It is employed to indicate the size or scope of something. The word "magnitude" in physics frequently denotes a size or quantity.. Something's magnitude is determined by its size. For example, a car moves faster than a bike with terms of speed. The speed difference between the car and the bike in this case is greater. It reveals the absolute or relative size or direction that an object moves when in motion.

Speed is defined as the magnitude of velocity, and the magnitude of the slope of the displacement-time graph provides the speed. Since the slope gets steeper as we move from A to B, Speed is increased as a result between points A and B.

To know more about Magnitude visit:

https://brainly.com/question/13218641

#SPJ1

Answer:It might seem small, but atmospheric dust is a big deal. Consisting (mostly) of tiny pieces of metal oxides, clays and carbonates, dust is the single largest component of the aerosols in Earth's atmosphere, and it likely has a significant impact on the Earth's climate, as it effects a wide range of phenomena, including from temperatures in the Atlantic Ocean to the rate of snowmelt in the southwestern U.S. Dust may also affect hurricanes, as recent research based on data sets dating back to the 1950s suggests an inverse relationship between dust in the tropical North Atlantic and the number of Atlantic hurricanes during the past several decades.

Explanation:

For a converging lens, the focal point is the point at which converging light rays cross; for a diverging lens, the focal point is the point from which diverging light rays appear to originate.

To learn more about diverging rays refer to:

https://brainly.com/question/15123066

#SPJ1

The compass felt the magnetic field around wire where current flows in upward direction. The vector direction of magnetic field around wire (current ON) according to thumb rule is anti-clockwise.

A wire develops a ring-shaped magnetic field as current flows through it. This magnetic field has the ability to divert the needle of a magnetic compass. Closer to the wire, the magnetic field is stronger, and its strength grows as the current does as well. This magnetic field is a result of the circular wire's current flow, and the circular wire's centre has straight magnetic field lines. By using the right hand thumb rule, the magnetic field's direction can be determined.

it is as a result of the magnetic field that is created when current is transferred through a current-carrying conductor.

Learn more about magnetic field here:

brainly.com/question/23096032

#SPJ4

Answer:

Focal length (f) = 1/2 (Object distance + Image distance)

f = 1/2 (12.2 cm + 25.0 cm)

f = 18.6 cm

Both an electric field and a magnetic field can deflect a beam of charged particles

A magnetic field is any region or space where a magnetic force can be felt. The magnetic field strength is also known as magnetic field.

When a beam of charged particles pass through the magnetic field, the beam of the charged particle will be deflected by moving in a circle.

But when a beam of charged particles pass through the electric filed, the beam of charged particles will be deflected by moving in a parabolic path.

Therefore, a beam of charged particles can be deflected by both an electric field and a magnetic field.

Learn more about Magnetic Field here : https://brainly.com/question/26257705

#SPJ1

The article "Sunrise, Sunset...or Not?" by ReadWorks has a more formal tone compared to "The Ever-Changing Sky" by Megan McGibney.

In "Sunrise, Sunset...or Not?" the author uses scientific and technical terms such as "counterclockwise," "Arctic Circle," and "phenomenon," and provides a detailed explanation of the scientific reasoning behind the rising and setting of the sun.

In contrast, "The Ever-Changing Sky" by Megan McGibney has a more casual tone, using more colloquial language such as "clear day," "bright and shiny," and "People have always looked up at the sky with wonder." The author also uses phrases like "guess how long" and "right!" which implies that the author is addressing a less formal audience and is being conversational.

In all, "Sunrise, Sunset...or Not?" has a more formal tone because of its use of technical language, explanation of scientific concepts, and a generally informative and explanatory writing style.

Learn more about formal tone from

https://brainly.com/question/25701529
#SPJ1

Sunrise, Sunset...or Not?

by ReadWorks

The sun is a wonderful thing for Earth. It is a star that heats the planet and makes life on

Earth possible. In addition, its light shines onto the planet. It is Earth's ultimate source of

energy.

Summer days may be longer than winter days, but for most people, the sun seems to do the

same thing each day: it appears to come up in the east for the day, and it appears to go down

in the west for the night. The sun looks like it rises in the east and sets in the west because of

how the earth spins in space. It spins toward the east, or counterclockwise. This means that

when most people look at the sky in the morning, the sun will first appear in the east.

The earth takes 24 hours to complete one turn. For most places on Earth, there is a daytime

and nighttime every 24 hours. But in some places for many days at a time, the sun might stay

up in the sky, or it might not even come up above the horizon.

In some parts of the world, the sun can be up in the sky for months. During part of the spring

and summer in Earth's Northern Hemisphere, the Northern Hemisphere is tilted towards the

sun so much that the sun in northern Alaska, which is located in the Arctic Circle, never goes

below the horizon. The Arctic Circle is an area at the top of the earth. In Barrow, Alaska, the

sun doesn't set for almost three months! This phenomenon is called the midnight sun, when

the sun has not set at midnight. Try sleeping through that!

During parts of the fall and winter in Earth's Northern Hemisphere, the Northern Hemisphere

is tilted in such a way that the sun doesn't come over the horizon in northern Alaska for a little

over two months. Therefore, nights last more than 24 hours. This phenomenon is called the

polar night. Although the sun never rises above the horizon during parts of the fall and winter

in the Arctic Circle, enough light often shines so that people who live there don't need

The Ever-Changing Sky

The Ever-Changing Sky

by Megan McGibney

Look up at the sky on a clear day. You will see the sun. It is bright and shiny, warming much of

what its light touches. Look up at the sky again at night. You may see the stars. They are also

bright and shiny, glimmering in the dark sky. You may also see the moon. It looks bright and

shiny, reflecting light from the sun. People have always looked up at the sky with wonder.

Some have even studied the sun, moon, and stars. These people, called astronomers, have

learned that those objects in the sky do not stay in the same place all the time.

The Ever-Changing Sky

extra quarter of a day.

Let's take a closer look at the moon. The earth does not revolve around the moon. Instead,

the moon revolves around the earth. It takes the moon about four weeks to complete a

revolution around the earth. The portion of the moon we, here on Earth, see changes over

this period of about four weeks as the moon's position around the earth changes. The

moonlight we see at night is the moon's reflection of sunlight onto Earth. The different ways

the moon appears to us are known as the moon's phases. The moon's phases depend on the

moon's position in relation to the earth and the sun.

The four-week period starts and ends with the new moon. The new moon cannot be seen

because the side of the moon lit by the sun is facing away from the earth.

Use the articles "The Ever-Changing Sky" and "Sunrise, Sunset...or Not?" to answer

questions 6.

6. Which article has a more formal tone? Support your answer with details from both texts.

Answers will vary.

The amount of mercury needed to fill a 0.250-L flask is 3.38 kg.

The correct option is A.

An object's inertia, or barrier to a change in motion, is quantified by its mass. It is a basic physical characteristic that is measured in kilograms (kg), grams (g), and pounds (lbs) (lbs). Any item's mass is just an intrinsic feature, which means it measures the physical characteristics of the thing without taking into account outside factors. The relationship between mass and other physical characteristics like density, force, and speed is a common one in scientific calculations.

To do so, first convert the volume of 0.250 L supplied to cubic centimeters (cm3), which is equal to 250 cm3. To acquire 3375 g of mercury, multiply this amount by the density of mercury, which is 13.5 g/mL.

Density of water = 1   (1 g / ml)

.25 L = 250 ml   (milleters)

mass of flask = 250 ml * 1 g / ml = 250 g     (water to fill flask)

Equivalent mass of Hg = 13.5 * 250 g = 3375 g = 3.38 kg

To know more about Mass visit:

https://brainly.com/question/6782334

#SPJ4

In the straightforward cases where a constant force moves an object at constant velocity, the power is just P = Fv.

To learn more about constant speed refer to:

https://brainly.com/question/20968582

#SPJ1

On identifying aspects on the health pyramid, the statement "Physical health is a base of a health triangle and is the most essential part of the triangle" is inaccurate.

The triangle is just a three-sided polygon with three vertices. The triangle's internal angle, which is 180 degrees, is constructed. It implies that the internal angles in a triangle add up to 180 degrees. It is the polygon with the least amount of sides.

All of a triangle's angles measure below 90 degrees in an acute triangle. One of the triangle's angles is more than 90 degrees in an obtuse triangle. One angle of a right triangle is 90 degrees, while the other two are acute.

To know more about triangle visit :

https://brainly.com/question/13495142

#SPJ1

The value of Fmax = 10-³/2 N

Fmax = 500N

Explanation:

Impulse is the area under force curve

The ramp up and down each have area 1/2*base*height

= 1/2 *2ms*Fmax areas for the combined area (2ms)Fmax

The middle rectangle has area = base * height

= (4ms)Fmax

So, total (6ms)Fmax is equal to 3Ns

Fmax = 3Ns/6ms = 10^3 /2 N

Fmax = 1000/2 = 500N

The value of Fmax gives an impulse of 9.0 Ns is found to be 2.25N

The term "impulse" describes how much of an influence a force has overall over the course of time. J = F t for a constant force. The continuous net force applied on an object throughout time and its duration are both factors that affect impulse.

For a constant force, J = F ⋅ Δ t

Impulse J => 9 Ns

F max at given impulse = 9/Δ t => 9/(6-2)

                                                     => 2.25N

F stands for the applied resultant force, t1 and t2 for the start and end of the impulse, respectively, m for the object's mass, v2 for the object's ultimate velocity at the conclusion of the time interval, and. When the time interval starts, the object's starting velocity is v1.

Learn more about impulse here:

brainly.com/question/29978522

#SPJ4

The energy stored in the capacitor dus to 10C charge and 40V potential difference is 200 Joules.

Firstly we will need to calculate the capacitance of the capacitor. It will further help in calculation of stored energy. The formula to be used for each of the following is -

Q = CV and E = 1/2CV², where Q represents charge, E represents energy, C is capacitance and V is voltage.

Keep the values in formula -

C = 10/40

Performing division

C = 1/4

E = 1/2×1/4×40²

Taking square

E = 1/2×1/4×1600

Performing multiplication and division

E = 200 J

Hence, the stored energy is 200 Joules.

Learn more about capacitor -

https://brainly.com/question/27393410

#SPJ4

The forces in the magnetic field is attractive in nature. Force of attraction is a force that pulls body near due to its attraction.

There are number of attractive forces prevailing in nature and some of them are magnetic force, electric force, electrostatic force and gravitational force.

Magnetic force, is attraction or repulsion that arises between electrically charged particles because of their motion. Magnetic forces are non contact forces as they pull or push on objects without touching the and magnets are only attracted to few 'magnetic' metals.

To know more about attractive forces, refer

https://brainly.com/question/2279150

#SPJ1

The critical temperature of water is 374.15°C (705.37°F).

Temperature is a measure of the degree of hotness or coldness of an object or environment. It is measured using a thermometer, which records the temperature in either Celsius or Fahrenheit. Temperature is an important factor in determining the climate of an area and can affect many aspects of life. Temperature also affects the rate of chemical reactions, and can be used to measure the kinetic energy of molecules. Temperature is an important factor in determining the properties of materials, and can influence how they behave.

The critical temperature of water is 374.15°C (705.37°F). At this temperature, water is neither a liquid nor a gas, and its properties are the same regardless of pressure.

To know more about tempreture click-

https://brainly.com/question/25677592

#SPJ4

(a) The diver’s speed 5.70 m above the water’s surface is 9.6 m/s.

(b) The diver’s speed just before striking the water is 14.28 m/s.

(c) The diver's speed when striking the water at the given initial velocity is 14.59 m/s.

The diver’s speed 5.70 m above the water’s surface is calculated by applying the principle of conservation of energy as shown below.

v = √ ( 2gh )

where;

h = 10.4 m - 5.7 m = 4.7 m

v = √ ( 2 x 9.8 x 4.7  )

v = 9.6 m/s

The diver's speed just before striking the water is calculated as follows;

v = √ ( 2gh )

where;

v = √ ( 2 x 9.8 x 10.4 )

v = 14.28 m/s

The diver's speed when striking the water at the given initial velocity is calculated as;

v² = u² + 2gh

where;

v² = (3)² + 2(9.8)(10.4)

v² = 212.84

v = √ (212.84)

v = 14.59 m/s

Learn more about diver's speed here: https://brainly.com/question/13276602

#SPJ1

The acceleration of both points A and B can be determined from the given velocities and accelerations of the gear racks.

Point A:

x-component of acceleration = 0 m/s^2

y-component of acceleration = 6 m/s^2

Point B:

x-component of acceleration = 0 m/s^2

y-component of acceleration = -6 m/s^2

The acceleration of both points A and B can be determined from the given velocities and accelerations of the gear racks. The x-component of the acceleration of both points is equal to 0 m/s^2 since the gear racks are not moving horizontally. The y-component of the acceleration of both points is equal to 6 m/s^2 in the upward direction for point A, and -6 m/s^2 in the downward direction for point B. Therefore, the acceleration of point A is (0, 6) m/s^2 and the acceleration of point B is (0, -6) m/s^2.

The complete question is:

At a given instant, the gear racks have the velocities and accelerations shown.

Determine the acceleration of points A and B.

Enter the x and y components of the acceleration

the complete question is :

At a given instant, the gear racks have the velocities and accelerations shown ( attached below ).

Determine the acceleration of point A.

Enter the x and y components of the acceleration

Determine the acceleration of point B.

Enter the x and y components of the acceleration

learn more about acceleration here

https://brainly.com/question/12550364

#SPJ4

The angle between the two beams in the glass to be 42.98°.

Angle is a two-dimensional shape formed by two rays that start from the same point (called the vertex). Angles are measured in degrees, with a full circle being 360 degrees. The size of an angle can range from 0° (no angle) to 180° (a straight line). Angles that measure more than 180° are called reflex angles.

To solve this question, we must use Snell's law. Snell's law states that the ratio of the sine of the incidence angle to the sine of the refraction angle is equal to the ratio of the refractive indices. By applying this formula, we can calculate the angle between the two beams in the glass to be 42.98°.

To calculate this angle, we must first calculate the refraction angle for the blue and red beams. To do this, we can set up the following equations:

Sin (50°) / Sin (θb) = 1.680 / 1

Sin (50°) / Sin (θr) = 1.621 / 1

By solving for θb and θr, we can find that the refraction angles for the blue and red beams are 36.51° and 34.47°, respectively.

Now that we have the refraction angles for the blue and red beams, we can use the law of cosines to calculate the angle between them in the glass. The law of cosines states that the square of the angle between two sides of a triangle is equal to the sum of the squares of the other two sides minus twice the product of the other two sides multiplied by the cosine of the angle between them.

We can set up the following equation to calculate the angle between the blue and red beams in the glass:

Cos (θ) = (36.51^2 + 34.47^2 - 50^2) / (2 * 36.51 * 34.47)

By solving for θ, we can find that the angle between the two beams in the glass is 42.98°.

To know more about accelaration click-
https://brainly.com/question/460763
#SPJ4

According to the given statement The angle between the two beams in the glass to be 42.98°.

Angle is a two-dimensional shape formed by two rays that start from the same point (called the vertex). Angles are measured in degrees, with a full circle being 360 degrees. The size of an angle can range from 0° (no angle) to 180° (a straight line). Angles that measure more than 180° are called reflex angles.

To solve this question, we must use Snell's law. Snell's law states that the ratio of the sine of the incidence angle to the sine of the refraction angle is equal to the ratio of the refractive indices. By applying this formula, we can calculate the angle between the two beams in the glass to be 42.98°.

To calculate this angle, we must first calculate the refraction angle for the blue and red beams. To do this, we can set up the following equations:

Sin (50°) / Sin (θb) = 1.680 / 1

Sin (50°) / Sin (θr) = 1.621 / 1

By solving for θb and θr, we can find that the refraction angles for the blue and red beams are 36.51° and 34.47°, respectively.

Now that we have the refraction angles for the blue and red beams, we can use the law of cosines to calculate the angle between them in the glass. The law of cosines states that the square of the angle between two sides of a triangle is equal to the sum of the squares of the other two sides minus twice the product of the other two sides multiplied by the cosine of the angle between them.

We can set up the following equation to calculate the angle between the blue and red beams in the glass:

Cos (θ) = (36.51^2 + 34.47^2 - 50^2) / (2 * 36.51 * 34.47)

By solving for θ, we can find that the angle between the two beams in the glass is 42.98°.

To know more about incidence angle click-

https://brainly.com/question/30048990

#SPJ4

Answer:

t = 2.21 s

Explanation: s = 98 m

                      u = 0 m/s

                      a = 40 m /s ^2

                     Using the second equation of motion :

                      s = ut + 1/2 at ^2

                      98 = 0 × t + 1/2 × 40 × t × t

                       98 = 0 + 20 t ^2

                       98 = 20 t ^2

                        98 / 20 = t ^2

                        4.9 = t ^2

                         t = √ 4.9

                          t = 2.21 s

The three main types of energy that play a role in Earth's processes are: solar energy, kinetic energy, and potential energy.

In the stages of the water cycle, energy moves between Earth's surface and atmosphere in the following way:

Therefore, energy moves between Earth's surface and atmosphere by the conversion of potential energy to kinetic energy and vice versa.

Learn more about water cycle from

https://brainly.com/question/25796102

#SPJ1

Attribute conformity is one that classifies each item in the sample as either having some attribute or not having it.

Variation present in your measurement system will affect the quality of the product and can damage your company's brand.

Purpose of Attribute measurement system analysis:

Accuracy check:

To access the customer standard, need to fulfill the customer's requirement, which means MSA performs to identify how good is our measurement system with our masters.

Precision check:

To determine that, the inspector can measure correctly. Is he checking with the same criteria across all shifts, machines, etc… to measure and evaluate parts and also called Repeatability

To know more about attribute conformity:

https://brainly.com/question/17290596

#SPJ4

The initial energy stored in the capacitor is 1.5E+6 J and the initial current through the patient I= 25.0 A.

The initial energy stored in the capacitor can be found using the formula for energy stored in a capacitor U₀=1/2CV^2 Plugging in the given values, we get:

U₀=1/2*(50E-6F)*(6000V)^2

U₀=1.5E+6 J

(b) The initial current through the patient can be found using Ohm's law, which states that I = V/R. Plugging in the given values, we get:

I = 6000V/240Ω

I= 25.0 A

(c) The energy dissipated in the patient during the 1.0 ms can be found by multiplying the power by the duration. The power can be found using the formula:

P = IV = (25A)(6000V) = 150,000 W. So the energy dissipated is:

Energy = P * t

= 150,000W * 0.001s

Energy=150 J

(d) To compare the average power supplied by the power source with the average power delivered to the patient, we need to know the power of the power source. Since the capacitor is charged to 6.0 kV in 2.0 s, the power can be found by:

Power = (Energy) / (time)

= (1.5E+6 J) / (2.0s)

Power= 750,000 W

So, the average power supplied by the power source is 750 kW and the average power delivered to the patient is 150 W.

(e) A capacitor is used in a defibrillator to store a large amount of energy in a small package. The energy stored in the capacitor can be discharged quickly to provide a large current to the patient's heart to restore normal beating.

The capacitor also allows the defibrillator to deliver a high-energy shock without drawing a large current from the power source, which improves the safety of the device.

To know more about Potential differences:

https://brainly.com/question/3406867

#SPJ4

α decay:

217  At    ​→        4 α  + 213 Bi

85                    2          83

β decay:

213 Bi     →       0 e  +  213 Po

83                   -1           84

α decay:

213 Po    →        4 α  + 209 Tl

84                    2           82

β decay:

209 Tl     →        0 e  + 209 Pb

82                    -1          83

What occurs when radioactive material decays?

A radioactive atom will naturally emit radiation in the form of energy or particles in order to transition into a more stable state. The difference between radioactive material and the radiation it emits must be made. Radioactivity types: beta, gamma, and alpha decay.

A typical type of radioactive decay known as "alpha decay" occurs when a nucleus emits an alpha particle (a helium-4 nucleus). A nucleus emits beta particles during the typical radioactive decay process known as beta decay. The offspring nucleus will be more atomically massive than the parent nucleus.

To learn more about radioactive decay use link below:

https://brainly.com/question/24115447

#SPJ4

Answer: the last one

Explanation: i did this before lol