1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Cerrena [4.2K]
2 years ago
14

find the mass of a ball on a roof 30 meters high, if the ball's gravitational potential energy is 58.8 joules

Physics
2 answers:
Taya2010 [7]2 years ago
4 0

Answer:

0.2 kg

Explanation:

Height of roof from the ground=h=30 m

Gravitational potential energy=P.E=58.8 J

We have to find the mass of the ball.

We know that

Gravitational potential energy of ball= mgh

Where g=9.8 m/s^2

Substitute the values

58.8=m\times 9.8\times 30

58.8=294 m

m=\frac{58.8}{294}

Using division property of equality

m=0.2 kg

Hence, the mass of ball=0.2 kg

Sidana [21]2 years ago
3 0
We are given the gravitational potential energy and the height of the ball and is asked in the problem to determine the mass of the ball. the formula to be followed is PE = mgh where g is the gravitational acceleration equal to 9.81 m/s^2. substituting, 58.8 J = m*9.8 m/s^2 * 30 m; m = 0.2 kg.
You might be interested in
A quelle distance le soletl se trouve-t-il de la terre?
Mnenie [13.5K]

The explanation for the following answer is explained below.

Explanation:

The sun is at an average distance of about 93,000,000 miles(150 million kilometers) away from the earth.It is so far away that light from the Sun,travelling at a speed of 186,000 miles (300,000 kilometers) per second, takes about 8 minutes to reach the earth.Earth does not travel around the Sun in a perfect circle.Instead its orbit is elliptical,like a stretched circle,with the sun just off the center of the orbit. At its closest,the Sun is 91.4 million miles (147.1 million kilometers ) away us.At its farthest ,the Sun is 94.5 million miles (152.1 million km) away.The Earth is closest to the Sun during winter in the northern hemisphere

5 0
3 years ago
8. What is the mass of an object if a force of 34 N produces an acceleration of 4 m/s/s?
coldgirl [10]

Answer:

<h3>The answer is 8.5 kg</h3>

Explanation:

The mass of the object can be found by using the formula

m =  \frac{f}{a}  \\

where

f is the force

a is the acceleration

So we have

m =  \frac{34}{4}  =  \frac{17}{2}  \\

We have the final answer as

<h3>8.5 kg</h3>

Hope this helps you

7 0
2 years ago
Read 2 more answers
A ball dropped from a bridge takes three seconds to reach the water below how far is the bridge above the water?
tatuchka [14]

<u>Given that:</u>

Ball dropped from a bridge at the rate of 3 seconds

Determine the height of fall (S) = ?

      As we know that, S = ut + 1/2 ×a.t²

                          u =initial velocity = 0

                          a= g =9.81 m/s  (since free fall)

                            S = 0+ 1/2 × 9.81 × 3²

                          <em> S = 44.145 m</em>

<em>44.145 m far is the bridge from water</em>

6 0
3 years ago
Sound is a type of mechanical wave and must have a medium through which to travel. Sound will move at different speeds when whic
Alex787 [66]
Hey there!

The answer would be B. The sound moves from air to water.

Sound travels through different mediums. It goes fastest in solids, a little slower in liquids, and slowest in air. Sound is a very fast wave, but remember that mediums can differ that. In a vacuum space, there is no sound at all. (ex. outer space)

Hope this helps !
5 0
3 years ago
If a group of workers can apply a force of 1,275 newtons to move a crate 26 meters, what amount of work will they have accomplis
JulijaS [17]
Work=applied Force x distance

= 1275 x 26
=33150 Joules
8 0
3 years ago
Other questions:
  • A force acting upon an object to cause a displacement is known as:
    5·2 answers
  • 4. A solution that contains a large amount of salt and a small amount of water is said to be a _______ solution.
    15·1 answer
  • The fastest propeller-driven aircraft is the Russian TU-95/142, which canreach a maximum speed of 925 km/h. For this speed, calc
    12·1 answer
  • A wave with a short wave length will also have...?
    15·1 answer
  • Cell phone conversations are transmitted by high-frequency radio waves. Suppose the signal has wavelength 36.5 cm while travelin
    9·1 answer
  • A boat is moving at the rate of 15.0 meters per second. It’s speed is then decreased uniformly to 3.0 meters per second. It take
    10·1 answer
  • A truck driver is broadcasting at a frequency of 27.075 MHz with a CB (citizen's band) radio. Determine the wavelength of the el
    15·1 answer
  • Characteristics sa Ancient art
    8·1 answer
  • What is the wavelength of an FM radio
    6·1 answer
  • Describe at least one technological application of radioactive decay that can benefit human health.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!