the alpha particles emitted by radon–222 have an energy of 8.8 × 10–13 j. if a 200. g pb brick absorbs 1.0 × 1010 alpha particles from radon decay, what dose in rads will the brick absorb?

The required tension in the cable when the elevator accelerates down at a rate of 3. 7 m/s2 is  143163.26 N.

The rate at which velocity changes is called acceleration. Acceleration typically indicates a change in speed, but not necessarily. An item that follows a circular course while maintaining a constant speed is still moving forward because the direction of its motion is shifting.

We have,

Weight = 230000N, Mass of elevator = 23469.38 kg

a = 3.7 m/s^2

So, by free body concept

230000 - T = 23469.38 kg(3.7)

230000 - T = 86836.74

T = 143163.26 N

Thus, required tension in string is  143163.26 N.

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The gravitational field strength on Oobla is 20.8 N/kg. It is greater than the gravitational field strength on Earth.

The gravitational field strength, also called acceleration due to gravity or free-fall acceleration, is the gravitational force that acts on a mass of object. It can be expressed as

g = F/m

Where

The gravitational force can be stated as weight of object W. The formula becomes W = mg. So, the weight of an object depends on the gravitational field strength on a place.

An object has a weight of 170 N on Earth. The weight becomes 360 N on Oobla. Find the gravitational field strength on Oobla!

We know that the gravitational field strength on Earth is 9.8 N/kg.

Let's say:

The mass of an object is always the same wherever it is.

So, the gravitational field strength on Oobla is

m = W/g

m₁ = m₂

W₁/g₁ = W₂/g₂

170/9.8 = 360/g₂

g₂ = (9.8×360)/170

g₂ = 20.8 N/kg

It is greater than the the value of g on Earth.

Hence, the planet Oobla has the gravitational field strength of 20.8 N/kg.

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The sum of the potential energy and the kinetic energy of an object is called as mechanical energy.

An object's mechanical energy can be defined as the result of its motion (i.e., kinetic energy) and/or the result of its stored position energy (i.e., potential energy).

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Electrons do not follow specific paths, so describing the area where an electron is likely to be is more scientifically accurate and is actually an improvement over earlier models.

The first option is correct.

The electron is described as a subatomic particle with a negative one elementary electric charge.

Modern orbital theory predicts electron in specific orbitals which are three-dimensional in nature.

It is a quantum mechanical phenomenon where we can not apply classical mechanics to determine the exact position of electron.

The square of the amplitude wave function associated with the electron gives the probability of finding the electron in a particular region.

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By using kinematic equation, the height of the cliff would be 90.6 meters.

The kinematics equations are frequently used to analyze the free-falling motion of an object, in this case we are given that:

The time (t) = 4.3 seconds

Acceleration due to gravity (a) = 9.8 meters per second

Since we know that the time it takes for the stone to fall to the ground is 4.3 s, we can use the following formula to determine the height to which the stone will fall as a result of gravity:

x = v₀t + 1/2 at²

where x is the displacement, v is the velocity, t is the time, and a is the acceleration.

x = 0 + 1/2 (-9.8) (4.3)²

x = -90.6

As the result, the height of the cliff would be 90.6 meters.

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Answer:

Bernoulli's principle explains how objects heavier than air are able to fly

Explanation:

Basically, Bernoulli's principle states that faster-moving air has greater air pressure than slower-moving air

When an object has greater air pressure on its top surface than its lower surface it will create lift, or lift the object up

Thus in a tornado, with extremely high winds a roof could be easily lifted up if the air pressure is greater than the force of gravity

Energy needed to increase the temperature of 3 kg of water 15 C is 188280 J.

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The sodium electric charge ion on the right has a total charge of -1 and consists of 17 protons and 18 electrons.

Ions are any atoms or clusters of atoms with an electric charge. Cations are the name for positive-charged ions. Anion is the name for ions that have a negative charge. Several common compounds are present in the body as ions. Examples of typical salts are sodium, potassium, calcium, chloride, and bicarbonate.

Beyond scientific instruments, these charged particles have significant applications in home appliances like smoke detectors and air purifiers. By disrupting and neutralizing the airborne bacteria, ions can clean the air.

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MLA 9 in-text citation looks like: (Burke 3); (Best and Marcus 9); (Franck et al. 327).

In MLA 9th edition, in-text citations will be:

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Length of :  |AB| = √(x2-x1)2 + (y2-y1)2

|AB| = √(x2-x1)2 + (y2-y1)2

|AB| = √(x2-x1)2 + (y2-y1)2

Sum of :  x1+x2+y1+y2

Angle :  θ = arctan2(y2-y1, x2-x1)

Length is a measure of distance in one dimension, typically described as the longest side of an object, such as a line, a road, or a wall. The most common unit of measurement is a linear one, such feet, miles, centimetres, or millimetres. Length can also be measured in three-dimensional units, such as inches, feet, yards, and miles, as well as in other units such as cubits, rods, and fathoms. In terms of physics, length is the physical property of an object that describes its overall size and shape, or the distance between two points.

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So, the magnitude of velocity concerning:

Hi! Here I will help you to solve problems related to the velocity vector. In this problem, we know that a particle moves at a certain speed with an angle ([tex] \sf{\theta} [/tex]) on the x-axis. Of course, with conditions like this, velocity can be described on the x or y-axis. The result of the x-axis velocity is horizontal movement. On the other hand, the y-axis velocity is vertical movement. See the equation below to know the magnitude of velocity concerning the x and y-axis.

[tex] \boxed{\sf{\bold{v_x = v_i \cdot \cos(\theta)}}} [/tex]

[tex] \boxed{\sf{\bold{v_y = v_i \cdot \sin(\theta)}}} [/tex]

With the following condition:

[tex] \sf{v_x = v_i \cdot \cos(\theta)} [/tex]

[tex] \sf{v_x = 20 \cdot \cos(275^{\circ})} [/tex]

[tex] \sf{\bold{v_x \approx 1.74 \: m/s}} [/tex]

[tex] \sf{v_y = v_i \cdot \sin(\theta)} [/tex]

[tex] \sf{v_y = 20 \cdot \sin(275^{\circ})} [/tex]

[tex] \sf{\bold{v_y \approx -19.92 \: m/s}} [/tex]

So, the magnitude of velocity concerning:

The source of errors in this experiment could occur from the improper measuring technique. While measuring the magnetic field in the solenoid, the magnetic field sensor might not be held properly perpendicular to the table on which the solenoid was resting.

The factors that can affect the strength of a magnetic field at a point are the magnitude of the electric current and the perpendicular distance between the point and the conductor.

The term solenoid refers to a long, thin loop of wire, often wrapped around a metallic core. Solenoids produce a magnetic field when an electric current is passed through them. Solenoids are significant because they can create and regulate magnetic fields and can be used as electromagnets.

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Answer: Option (a)

Solution: The covalent bond is best described as the bond where one atom shares its electron(s) with another neighboring atom to become stable. Here, the word “co” represents jointly and “valent” represents valency shared by them. Therefore, option (a) is the most appropriate choice amongst all the provided options.

Answer:

d/2=vt

Explanation:

Since the speed of sound in water is known, the simple equation "d/2 = vt" is used to find the depth "d".

At an equilibrium position of a pendulum, the velocity is at a maximum.

The pendulum hangs straight down while it is at rest, not swinging. This position is called the equilibrium position. It is practical to consider this position to be the origin or reference position indicated in the definition of position.

The pendulum's lowest point is where the equilibrium point is located. It is called this because, there are no forces acting on it. This is the point at which the pendulum would be at a stable, motionless equilibrium.

It is also the time when the pendulum, after being let go from above, totally converts the gravitational potential energy it began with into kinetic energy. As such, this means that at this point the pendulum is at its maximum velocity.

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Both reels will have the same angular speed of 0.0500 rad/sec.

What is angular speed?

angular speed is described as the rate at which an object changes it angles which we measure in radians in a given time

Given data:

The total length of videotape cassette is, L = 213 m.

The time interval for the play is, 2.4 = 2.4 x 3600

The outer radius of tape is, 48mm

The inner radius of tape is, 11mm

The videotape will undergo rotational motion and the value of angular velocity is given as,

w = v/ r  ... eqn (1)

Here, v is the linear speed of the cassette and r is the effective radius of the cassette, and its value is,

r =√ R²o + R²i/ 2

r = 49.24mm

And, the linear speed of the cassette is given as

v = L/ t

v = 213/ 8640

v = 0.02465 m/s

Substitute the values in equation (1) as

w = v/r

w =  0.02465/ 49.24

w = 0.0500 rad/sec.

Thus, we can conclude that at some point during the play, both reels will have the same angular speed of   0.0500 rad/sec.

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The required speed of 920 yards every 3. 5 hours is terms of miles per week is 25 miles/week.

Speed is what it means. the speed at which an object's location changes in any direction. The distance travelled in relation to the time it took to travel that distance is how speed is defined. Since speed simply has a direction and no magnitude, it is a scalar quantity.

According to question:

We have,

Speed = 920/3.5 = 262.85 yd/hour

We know that

1 yard/hour = 0.0954545 mile/week

So,

262.85 yd/hour = 25 miles/week

Thus, speed of 920 yards every 3. 5 hours is 25 miles/week.

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The story that describes the graph is, we  were accelerating from our starting point A to the next point B, then from point B started decelerating to our next point C, rested between point C and D, and finally we started our journey again by accelerating to point E.

A displacement time graph, is a type of graph that is used to describe the motion of an object with respect of how the object is changing its position with time.

The change in position with change in the time of motion of the object gives velocity of the object which is also equal to the slope of the graph.

v = Δx / Δt

where;

From the given graph we can conclude the following based on the motion;

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Formed due to subduction, formed at a convergent boundary, and formed where mantle erupts through crust.

Subduction is the geologic process in which one tectonic plate moves beneath another and is forced downwards into the mantle. It is an important part of plate tectonics, as it is responsible for the formation of mountain ranges and volcanism. Subduction occurs at convergent boundaries, where two plates come together, and is usually accompanied by earthquakes, as the plates grind and slide against each other. Subduction zones are the areas where this process is occurring, and they are typically found in the world's oceans, along the margins of the continental plates.

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On a velocity-time graph, the object's displacement is indicated by the area under the line. The distance is the zone under a speed-time graph.

Displacement is the outcome of velocity and time. The area of our graph is obtained by multiplying the velocity and time, which is virtually equivalent to multiplying two lengths. The solution to estimating displacements from a velocity-time graph.

The amount of acceleration will be determined by the graph's slope. Example If a particle's acceleration is constant (k) and positive, its starting velocity is zero, and it grows linearly from there. The acceleration will be determined by the velocity-time graph's slope.

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He ends up 17 meters to the left of the center position, according to the given question.

An object's location at any given time is known as its position (x), and its change in position is known as displacement. Both of these must be determined from the reference frame because they are vector values.

Suppose he is at a position which is 3 m. right from the center position

Given data :

Initial position = 3m to the right

Time = 10 sec.

Speed = 2m/s.

By using the formula -

speed = distance / time

distance = speed × time

distance = 2 × 10

distance = 20 m.

He end up at 17 m. to the left from the center position.

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This statement is accurate because it is strongly encouraged that those with unhealthy lifestyle choices or known heritable diseases undergo a medical examination before beginning an exercise regimen.

Chd, type two diabetes, and other infectious conditions can all be prevented, delayed, and managed with a nutritious diet. Lean protein, whole grains, a variety of fruits and vegetables, low-fat dairy products, and a diet low in sweeteners, animal fats, and sodium make up a balanced, healthy diet.

Your overall health, physical fitness, and life experience can all benefit from regular physical activity. Your risk of developing chronic illnesses like type two diabetes, heart attacks, numerous cancers, anxiety and depression, and brain is also decreased.

How can a chronic condition improve my quality of life.

consuming a balanced diet.

Performing as much exercise as you can.

avoiding harmful coping strategies like drinking and drug abuse.

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The specific heat capacity of the air in the balloon is 125.88 J/kg °C.

Specific heat is the amount of energy required to raise the temperature of a unit mass of a substance by one degree. It is measured in joules per kilogram Kelvin (J/kgK). Specific heat is an important physical property of a substance, as it determines how much energy is required to change its temperature. It is also used to calculate the amount of energy released or absorbed during a chemical reaction. Specific heat is also known as heat capacity, and is often used to compare the heat capacity of different materials.

The specific heat capacity of a substance is the amount of energy required to raise the temperature of 1 kg of the substance by 1 °C.
To calculate the specific heat capacity of the air in the balloon, we can use the equation:
Q = m * c * ΔT
Where Q is the change in thermal energy, m is the mass of the air, c is the specific heat capacity, and ΔT is the change in temperature.
Rearranging the equation, we get:
c = Q / (m * ΔT)
Plugging in the values given, we get:
c = 860 J / (0.00320 kg * 215 °C)
c = 860 J / (0.0068 kg °C)
c = 125.88 J/kg °C
Therefore, the specific heat capacity of the air in the balloon is 125.88 J/kg °C.

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Quartz and halite have different crystal shapes primarily because of the internal arrangement of atom.

Due to some reasons, quartz and halite have different crystal shapes. Primarily, the reasons are:

The very distinct key characteristics that make us can easily observe and differ between quartz and halite is that quartz crystals always make a pointed pencil shape. It has 6 sides on terminal ends as resembling a prism. Furthermore, halite tastes like salt, because halite is salt. The other characteristics that we could use to differentiate between two of them is that a quartz crystal is hexagonal in cross section, meanwhile a halite crystal is square in cross section.

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The rate at which a certain balloon travels is inversely proportional to the amount of weight attached to it if the balloon travels at 10 in./s and then there is a 2nd g weight attached to it approximately the weight must be attached to the balloon for it to travel 18 in./s is 1.1 grams.

When 2 grams are added, the rate moves at 10 in/sec.

Since the weight and the distance traveled are inversely proportional, the expression can be written as

d= k/W

10 =k/2

k= 20

When 2 grams are attached, the rate moves at a speed of 10 in/second.

Given that the relationship between the weight and the traveled distance is inverse, this can be expressed as,

d= k/W

18= k/w

w= k/18

Substitute value of k in the above expression.

W= 20/18

W=1.11 gram

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a) The force constant is 2.49 N/m

b) The amplitude is 1.65 m

We know that a spring can be said to be the kind of substance that has a potential energy that has been stored in it and this energy is released to do work when the spring has been pulled.

We have that;

T = 2π√m/K

T = period

m = mass

K = spring constant

Then;

0.84 = 2*3.14√0.447/K

0.84/2*3.14 = √0.447/K

(0.84/2*3.14)^2 = 0.447/K

K  = 0.447/0.0179

K = 2.49 N/m

Then the amplitude is obtained from;

W = 1/2 KA^2

A =√2W/K

A = √2 * 3.4/2.49

A = 1.65 m

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The angular acceleration of a spinning amusement park ride is 0.2 rad/s^2.

The pace at which an object moving in a circle changes angular velocity over time is referred to as angular acceleration. Rotational acceleration is another name for angular acceleration. It has both magnitude and direction, making it a vector quantity.

The rate of change in angular displacement is known as angular velocity, and the rate of change in angular velocity is known as angular acceleration.

Zero magnitude acceleration is still acceleration. Motion with uniform (i.e. zero) acceleration is a specific case of motion with constant velocity.

Given:

Initial acceleration = 0.50 rad/s

Final acceleration = 0.60 rad/s

Time = 0.50 s

Angular Acceleration:

α = Δω/Δt

[tex]\alpha = \frac{0.60-0.50}{0.50}[/tex]

[tex]\alpha =\frac{0.1}{0.50}[/tex]

[tex]\alpha =0.2rad/s^2[/tex]

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The energy of the ball has been reduced by 0.98 joules (option A) after bouncing back because potential energy has been transformed into kinetic energy (option A).

Potential energy is the energy possessed by an object because of its position while kinetic energy is the energy possessed by an object because of its motion.

According to this question, a ball with a mass of 0.5 kg is lifted to a height of 2.0 meters and dropped. It bounces back to a height of 1.8 meters. The difference in potential energy can be calculated as follows:

P.E (1) = 0.5 × 2 × 9.8 = 9.8J

P.E (2) = 0.5 × 1.8 × 9.8 = 8.82J

∆P.E= 9.8 - 8.82 = 0.98J

This reduction occured because the potential energy of the ball changes to kinetic energy (in motion).

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The distance between the ground directly underneath the balloon and the second rope is 36.37 feet.

The complete question is in the attachment. Look at the triangle ACD. For ∠ ACD = θ the trigonometric ratios

Look at the picture

tan θ = y/x

tan 30° = AD/AC

tan 30° = 21/AC

AC = 21 ÷ tan 30°

AC = 21 ÷ 0.577

AC = 36.37 feet

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