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
masha68 [24]
3 years ago
8

Calculate the potential energy stored in an object of mass 50 kg at a height of 20 m from the

Physics
1 answer:
sasho [114]3 years ago
5 0

Answer:

potential energy=mgh

=50×10×20

=10000 J

You might be interested in
What is the mathematical relationship between voltage, resistance, and current?
Alex73 [517]
The formula for Voltage is V = IR or in words
voltage equals current times the resistance
5 0
3 years ago
The length of a rectangular sheet of metal decreases by 34.5 cm. Its width decreases proportionally. If the sheets original widt
devlian [24]
The original width was 94.71 cm 
<span>The area decreased 33.1% </span>

<span>The equation for the final size is </span>
<span>2X^2 = 1.2 m^2 </span>
<span>X^2 - 0.6 m^2 </span>
<span>X^2 = 10000 * .6 cm </span>
<span>X = 77.46 cm (this is the width) </span>

<span>The length is 2 * 77.46 = 154.92 cm </span>

<span>The original length was 154.92 + 34.5 = 189.42 cm </span>
<span>The original width was 189.42 / 2 = 94.71 cm </span>

<span>The original area was 94.71 * 189.92 = 17939.9 cm^2 </span>
<span>The new area is 79.46 * 154.92 = 12000.1 cm^2 </span>

<span>The difference between the original and current area is 17939.9 - 12000.1 = 5939.86 cm^2 </span>

<span>The percentage the area decreased is 5939.86 ' 17939.9 = 33.1%</span>
6 0
3 years ago
A ball is falling after rolling off a tall roof. The ball has
Rom4ik [11]
C.
Because it’s falling it has acceleration in the y direction. If you have acceleration, you usually also have velocity, and since kinetic energy is KE= Mv^2 you know you have it. It also has potential energy because it has some height to it, and PE= Mgh.
8 0
3 years ago
Read 2 more answers
Two balls are thrown from a cliff. One is thrown directly up, the other directly down. Both balls have the same initial speed, a
Otrada [13]

Answer:

both the same

Explanation:

When a ball is thrown vertically upwards, it experiences that same acceleration due to gravity as an object thrown directly downwards.

This means that if we ignore the effects of air resistance, and the two balls have the same initial speed, they are expected both expected to hit the ground at the same speed as a result of the principle of conservation of energy.

8 0
3 years ago
What is something the screw can do that the other simple machines can't
Naya [18.7K]

Geometrically, a screw can be viewed as a narrow inclined plane wrapped around a cylinder. Like the other simple machines a screw can amplify force; a small rotational force (torque) on the shaft can exert a large axial force on a load.

3 0
3 years ago
Other questions:
  • Motion can be detected by using background objects that are not moving called_______________ points
    15·1 answer
  • Why will a change in velocity have a greater affect on KE than a change in mass?
    9·2 answers
  • A lightbulb has a resistance of 285 ω when operating with a potential difference of 110 v across it. what is the current in the
    5·1 answer
  • A man pushes a cart with force of 120-N at an angle of 50 degrees with the ground. If he walks a horizontal displacement of 20-m
    12·1 answer
  • Which equation represents the total energy of a system
    6·1 answer
  • Help, please! Thank you for your kind gesture
    7·2 answers
  • Which of the following best describes
    15·2 answers
  • A hiker walks 11 km due north from camp and then turns and walks due east. The
    10·1 answer
  • 3. A cart (m= 10.0 kg) is currently traveling with a velocity of 3.0 m/s. The cart then gains speed,
    6·1 answer
  • Two people stand facing each other at a roller skating rink then push off each other. a). What is the momentum of the system bef
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!