Answer:
180Watts
Explanation:
Power = Force * distance/Time
Given
Force = 500N
Distance = 18m
Time t = 50secs
Substitute into the formula
Power = 500*18/50
Power = 10 * 18
Power = 180Watts
Hence her power output vertically is is 180Watts
A 30 N force is applied to a box, as shown below in the diagram. (g = 10 m/s2) 30N 2kg The acceleration of the box is
Apply Pascal's law to a ketchup packet. Explain what will happen if you tear a small
hole in one corner of a packet and then squeeze the packet.
Answer:
its will explode because it's like a soda with baking soda added together and you shake it the small hole can make a huge explosion
Famous French mathematician, physicist, and philosopher Blaise Pascal announced this law in the year 1647.
What is pascal law?According to this law, pressure applied to a liquid that is at rest is uniformly distributed throughout.
There are numerous uses for it in daily life. Numerous gadgets, like hydraulic lifts and brakes, are based on Pascal's law.
For incompressible fluids, Pascal's concept is applicable. The majority of vehicle repair shops using lifts use one common use. In essence, air from an air compressor is delivered to the top of oil in a container; the oil then exerts pressure on a sleeve or piston that raises the car.
Therefore, Famous French mathematician, physicist, and philosopher Blaise Pascal announced this law in the year 1647.
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A child is standing on the platform of a station, watching the trains.
.
A train travelling at 30 m/s takes 3 s to pass the child.
What is the length of the train?
A 10m
B 30 m
C 90 m
D 135 m
plzzzzzzz helppppppp
Answer:
6th amendment
Explanation:
the judge denied her request for a lawyer when she requested one
PLS ANSWER FAST WILL GIVE BRAINLEST!!!
Calculate the missing variables using the necessary formula and rules using "FORCE"
A water filled balloon with an overall mass of 1 kg undergoes an acceleration of 2m/s2. How much force is being applied to the ballon?
Answer:
2 Newtons
Explanation:
[tex]F = ma[/tex]
Therefore, your mass would be 1kg and your acceleration would be 2m/s/s
Plug the numbers into the equation:
[tex](1kg)(2m/s/s)[/tex]
which will equal
[tex]2 Newtons[/tex]
What is the velocity of a 750 kg object at a height of 0m if it’s ME is 3590J?
Answer:
Sorry for this question
At what point does the ball have the most gravitational potential energy?
Scientists treat the number of stars in a given volume of space as a Poisson random variable. The density of our galaxy in the vicinity of our solar system is 3 stars per 10 cubic light-years. What is the probability of one or more stars in 10 cubic light-years? Round your answer to 4 decimal places.
Answer:
[tex]P(X\ge 1) = 0.9502[/tex]
Explanation:
Given
Density = 3 starts in 10 cubic light years.
Required
Determine the probability of 1 or more in 10 cubic light years
Since the number of stars follow a Poisson distribution, we make use of:
[tex]P(X=k) = f(x) = (\lambda T)^k\frac{ e^{-\lambda T}}{k!}[/tex]
[tex]\lambda = density[/tex]
[tex]\lambda = \frac{3}{10}[/tex]
[tex]\lambda = 0.3[/tex]
T = the light years
[tex]T = 10[/tex]
Calculating [tex]P(X \ge 1)[/tex]
In probability:
[tex]P(X \ge 1) = 1 - P(X = 0)[/tex]
Calculating P(X=0)
Substitute 0 for k and the values for [tex]\lambda[/tex] and T in
[tex]P(X=k) = f(x) = (\lambda T)^k\frac{ e^{-\lambda T}}{k!}[/tex]
[tex]P(X=0) = (0.3* 10)^0 * \frac{ e^{-0.3 * 10}}{0!}[/tex]
[tex]P(X=0) = (3)^0 * \frac{ e^{-0.3 * 10}}{1}[/tex]
[tex]P(X=0) = (3)^0 * e^{-0.3 * 10}[/tex]
[tex]P(X=0) = 1 * e^{-0.3 * 10}[/tex]
[tex]P(X=0) = 1 * e^{-3}[/tex]
[tex]P(X=0) = e^{-3}[/tex]
[tex]P(X=0) = 0.04979[/tex]
Substitute 0.04979 for P(X=0) in [tex]P(X \ge 1) = 1 - P(X = 0)[/tex]
[tex]P(X\ge 1) = 1 - 0.04979[/tex]
[tex]P(X\ge 1) = 0.95021[/tex]
[tex]P(X\ge 1) = 0.9502[/tex] --- approximated
Hence, the required probability is 0.9502
The frequency of the wave is 0.4 Hz. Calculate the period.
Answer:
use the formula
Explanation:
F = 1/T
where F = frequency and T = period
so put 0.4 Hz into the frequency
0.4 =1/T
T = 2.5 seconds
hope this helps
What force controls the movement of the planets around the sun, holds together stars grouped in galaxies, and galaxies grouped in clusters?
Answer:
Gravity.
Explanation:
The force that controls the movement of the planets around the sun, holds together stars grouped in galaxies, and galaxies grouped in clusters is called gravity.
This ultimately implies that, gravity is considered to be a universal force of attraction that acts between all objects that has both mass, energy and occupy space. Therefore, it acts in such a way as to bring objects together.
Additionally, the gravity of earth makes it possible for all physical objects to possess weight.
Weight can be defined as the force acting on a body or an object as a result of gravity.
Mathematically, weight is given by the formula;
[tex] Weight = mg [/tex]
Where;
m is the mass of an object.
g is acceleration due to gravity.
An object is placed 110 mm from a concave mirror with a focal length of 5.0 cm.
Answer:
Approximately 92 mm.
Explanation:
Object's distance, u = 110 mm = 11 cm
focal length of the mirror = 5 cm
Image distance, v = ?
To determine the image distance, apply the mirror's formula;
[tex]\frac{1}{f}[/tex] = [tex]\frac{1}{u}[/tex] + [tex]\frac{1}{v}[/tex]
[tex]\frac{1}{v}[/tex] = [tex]\frac{1}{f}[/tex] - [tex]\frac{1}{u}[/tex]
= [tex]\frac{1}{5}[/tex] - [tex]\frac{1}{11}[/tex]
= [tex]\frac{11-5}{55}[/tex]
[tex]\frac{1}{v}[/tex] = [tex]\frac{6}{55}[/tex]
⇒ v = [tex]\frac{55}{6}[/tex]
= 9.166667
v = 9.2 cm
The image distance is 92 mm.
A sound wave produced by a chime 515 m away is heard 1.50 s later. What is the speed of the sound in the air?
Answer:
the speed of the sound in the air is 343.3 m/s
Explanation:
The computation of the speed of the sound in the air is shown below:
As we know that
Speed = Distance ÷ time
So, here speed be 515 m
And, the time is 1.50 seconds
So, the speed of the sound is
= 515 m ÷ 1.50 seconds
= 343.3 m/s
hence, the speed of the sound in the air is 343.3 m/s
5. In an electric bell, electromagnet attracts________
towards itself.
Ans: It attracts iron armature
Need help ASAP
Thanks + BRAINLIST only for correct answer
1.Cell phones convert sound waves into______waves.
-light waves
-sound waves
-radio waves
2.Electromagnetic waves used in cell phone communications are called?
-microwave
-radio wave
-infrared
-all of the above
3.To send out a radio signal far and wide...it is called?
-broadcast
-casting
-antenna
Answer:
answer my question
Explanation:
3. If you were in a car collision, would you rather be hit by Vehicle 1 (2,027 kg) or Vehicle 2 (1,415 kg) from Activity 73? Explain.
Answer:
I say vehicle one, because both will apply the same amount of force but, because vehicle two has less mass, it will accelerate more rather than vehicle one which will accelerate less.
Why do we not feel air pressure?
Answer:
Explanation:
Is beacuse of the air within our bodys is exerting the same pressure out wards so tjere is no pressure difference
Answer:
it is because our body itself is not adept enough to resist the air pressure. For every reaction, there be an balanced opposite reaction according to Newton's law. namely, all forces such as air pressure are in proportion therefore we will not perceive air pressure which also means no net force.
Explanation:
how does the mass of object 1 and object 2 relate to gravitational force
Answer:
They are directly proportional to gravitational force.
Explanation:
Newton's Law of Gravity states that [tex]F_G=\frac{Gm_1m_2}{r^{2}}[/tex]. The two "m" values are the masses of the objects, r is the distance between their centers, and G is the gravitational constant. Notice how the "m" values are in the fraction's numerator (i.e., on top)? That means increasing even one of the objects' masses will increase the gravitational force. This is known as a direct relationship.
Of course, you could always use the wonderful table provided to solve this! You don't believe what I wrote above? Take on of the two objects' masses, divide the gravitational force by that number, and see what happens. Multiply the two masses together, and see what happens. Prove it for yourself!
I hope this increases your understanding of this concept. Have yourself a wondrous day, 'kay?
The height of a transverse waves is known as its?
Answer:
amplitude
Explanation:
amplitude of a wave is the maximum displacement of a point from its rest position.
hope you get it,
Use the drawing below to answer the following question.
1 kg
10 kg
20 kg
50 kg
All of the boxes shown above can slide easily. Which box will move farthest if each is
struck with the same amount of force?
A.
the 1-kg box
B. the 10-kg box
C. the 20-kg box
D. the 50-kg box
Answer:
A
Explanation:
Force = mass x acceleration
if the force is constant for each of the boxes, the smaller a boxes mass the greater its acceleration while the force is applied
Therefore the smaller box will have a greater initial velocity and will slide the furthest before it stops.
Which of the following wavelengths have the highest frequency? Group of answer choices a.infrared waves b. radio waves c.microwaves d.visible light
b...radio waves answer
if a 50.0-kg mass weighs 554 n on the planet saturn, calculate saturn’s radius
Answer:
17.35 × 10^(-6) m
Explanation:
Mass; m = 50 kg
Weight; W = 554 N
Now, we know that;
W = mg
Thus; 554 = 50g
g = 554/50
g = 11.08 m/s²
Also, we know that;
mg = GMm/r²
g = GM/r²
Making t the subject gives;
r = √(GM/g)
G has a constant value of 6.67 × 10^(-11) Nm²/kg²
r = √(6.67 × 10^(-11) × 50/11.08)
r = 17.35 × 10^(-6) m
The radius of the saturn is [tex]\bold {17.35 x 10^{-6 }m}[/tex] if a 50.0-kg mass weighs 554 N.
From Newton's second law,
W = mg
554 = 50 x g
g = 554/50
g = 11.08 m/s²
Now, Newton's law of gravitation
[tex]\bold {F=G{\dfrac{m_1m_2}{r^2}}}[/tex]
Where,
F = force
G = gravitational constant = 6.67 x 10^-11 N.m²/kg²
m1 & m2= mass = M = 50 kg
r = distance between centers of the masses
Put the values and solve it for r,
[tex]\bold {r = \sqrt {(6.67 x10^{-11} \times \dfrac {50}{11.08}}}\\\\\bold {r = 17.35 x 10^{-6 }m}[/tex]
Therefore, the radius of the saturn is [tex]\bold {17.35 x 10^{-6 }m}[/tex] if a 50.0-kg mass weighs 554 N.
To know more about Newton's law of gravitation
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What is the netforce?
Answer:
6 Newtons to the left.
Explanation:
We can convert this into a generic algebra equation by giving directions positive and negative values.
The 6 will be positive, and the 10 and 2 will be negative.
Add 10 and 2 to have 12.
6-12 = -6.
Therefore you have 6 newtons to the left (negative).
help please!!!!!!!!!!!?!!
Use newton's law to explain the vertical acceleration of a projectile
Answer:
Explained below
Explanation:
Newton's first law of motion: This law states that an object will remain at rest or continue in constant motion except it's acted upon by an external force. In projectile motion, the horizontal component of velocity will remain unchanged because we ignore air resistance since no force is acting in that horizontal direction.
Newton's second law of motion: This law states that force is the product of mass and acceleration. In projectile the force acts downwards, thus f = mg.
But g = a since internal forces will cancel out.
Thus, F = ma
Suppose the Sun is 1.29025 X 108 km from
Earth.
The speed of light is 2.99792 x 108 m/s.
How long does it take for its light to reach
us?
Answer in units of min.
Answer:
It takes the Sun's light 7.17 minutes to reach us.
Explanation:
We can calculate the time that takes the light to reach us by using the following equation:
[tex] t = \frac{d}{c} [/tex]
Where:
d: is the distance = 1.29025x10⁸ km = 1.29025x10¹¹ m
c: si the speed of light = 2.99792x10⁸ m/s
Hence, the time is:
[tex] t = \frac{d}{c} = \frac{1.29025 \cdot 10^{11} m}{2.99792 \cdot 10^{8} m/s} = 430.38 s = 7.17 min [/tex]
Therefore, it takes the Sun's light 7.17 minutes to reach us.
I hope it helps you!
these two pls :)))) ill mark brainliest :)
Answer:
Bowling Ball: weight on Earth = 49 N
Textbook: Mass = 2 kg; weight on the moon = 3.2 N
Large dog: weight on Earth = 490 N; weight on the moon = 80 N
Law of Universal Gravitation: [tex]F_{G}=\frac{Gm_{1}m_{2}}{r^{2}}[/tex]
[tex]F_{G}[/tex] = gravitational force (Newtons/N)
G = gravitational constant, 6.67430 × 10¹¹ [tex]\frac{N*m^{2}}{kg^{2}}[/tex]
m₁ and m₂ = masses of two objects (kilograms/kg)
r² = square of distance between centers of the two objects (meters/m)
Have a fantastic day!
what are subtomic particles
Answer:
In the physical sciences, subatomic particles are smaller than atoms. They can be composite particles, such as the neutron and proton; or elementary particles, which according to the standard model are not made of other particles. Particle physics and nuclear physics study these particles and how they interact.
Explanation:
Answer:
In physical sciences, subatomic particles are smaller than atoms. They can be composite particles, such as the neutron and proton; or elementary particles, which according to the standard model are not made of other particles.
another A b c or d about the earth...
Answer:
B seismic wave
HELP PLS
2. How would these gravity forces change if the Sun got much bigger?
Decrease. Increase. Stay the same
3. How would these gravity forces change if the Earth was much closer to the Sum?
Decrease Increase. Stay the same
4. How would these gravity forces change if the Earth got much smaller?
Decrease. Increase. Stay the same
face
Answer:
2. increase
3. stay the same
4. Decrease
Explanation:
(let me know if im wrong on any we learned this last year so I might be a little rusty on this subject)
The force of gravity increases with increase in the size of the Sun and with decrease in the distance between the earth and the Sun. However, it decreases with decrease in the size of the earth.
What is gravity?Gravity is the force of attraction that exists between two bodies separated by a given distance.
The force of gravity increases with increase in the size of the bodies as well as with a decrease in the distance of separation.
However, the force of gravity decreases with decrease in the size of the bodies as well as with a increase in the distance of separation.
Thus, for the force of gravity between the earth and the Sun;
Force of gravity increases with increase in the size of the SunForce of gravity increases with decrease in the distance between the earth and the Sun Force of gravity decreases with decrease in the size of the earth.Therefore, the force of gravity is affected by size of the bodies as well as the distance separating the bodies.
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what's the optical illusion also known as?
Answer:
An optical illusion (also called a visual illusion) is an illusion caused by the visual system and characterized by a visual percept that arguably appears to differ from reality. ... Cognitive visual illusions are the result of unconscious inferences and are perhaps those most widely known.