answer.
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
klasskru [66]
2 years ago
3

A 90-kg ceiling light is suspended 4 m above the floor. What is its gravitational potential energy?

Physics
2 answers:
Mumz [18]2 years ago
5 0

Answer:

Use the equation P = mgh. (U is the Potential energy, m = the mass in kg, g = gravity, h = height from floor/earth).  

The answer would be about 3532 J

Harman [31]2 years ago
5 0

Answer:

The answer to your question is Pe = 3531.6 J

Explanation:

Data

mass = 90 kg

height = 4 m

acceleration due to gravity = g = 9.81 m/s²

Formula

Potential energy = Pe = mgh

Process

Potential energy is the energy of an object due to its position.

1.- Substitution

Pe = (90)(9,81)(4)

2.- Simplification and result

Pe = 3531.6 J

You might be interested in
Consider a father pushing a child on a playground merry-go-round. the system has a moment of inertia of 84.4 kg · m2. the father
-Dominant- [34]
<span>At time t1 = 0 since the body is at rest, the body has an angular velocity, v1, of 0. At time t = X, the body has an angular velocity of 1.43rad/s2. Since Angular acceleration is just the difference in angular speed by time. We have 4.44 = v2 -v1/t2 -t1 where V and t are angular velocity and time. So we have 4.44 = 1.43 -0/X - 0. Hence X = 1.43/4.44 = 0.33s.</span>
6 0
2 years ago
Read 2 more answers
The difference between the two molar specific heats of a gas is 8000J/kgK. If the ratio of the two specific heats is 1.65, calcu
Serjik [45]

Answer:

sorry

Explanation:

pls search on google

4 0
2 years ago
An object initially at rest experiences a constant horizontal acceleration due to the action of a resultant force applied for 10
Marianna [84]

Answer:

a = 18.28 ft/s²

Explanation:

given,

time of force application, t= 10 s

Work = 10 Btu

mass of the object = 15 lb

acceleration, a =  ? ft/s²

1 btu = 778.15 ft.lbf

10 btu = 7781.5 ft.lbf

m = \dfrac{15}{32.174}\ slug

m = 0.466 slug

now,

work done  is equal to change in kinetic energy

W = \dfrac{1}{2} m (v_f^2-v_i^2)

7781.5 = \dfrac{1}{2}\times 0.466\times v_f^2

 v_f = 182.75\ ft/s

now, acceleration of object

  a = \dfrac{v_f-v_o}{t}

  a = \dfrac{182.75-0}{10}

         a = 18.28 ft/s²

constant acceleration of the object is equal to 18.28 ft/s²

3 0
2 years ago
Un pasager a intarziar la tren. Ajuns pe peron a observat trenul in miscare si a constatat ca unul dintre vagoane a trecut prin
ExtremeBDS [4]

b) intervalul de timp t3 in care prin fata sa trece vagonul urmator

Sper că am ajutat!

3 0
2 years ago
Use the formula a=h/n to find the batting average a of a batter who has h hits in n times at bat. Solve the formula for h. if a
Inessa [10]
A = h / n => h = a*n

a = 0.290 hit / time
n = 300 times

=> h = 0.290 hit / time * 300 time = 87 hits

Answer: 87 hits
4 0
2 years ago
Other questions:
  • Taylor places a nail on a bar magnet. The nail sticks to the magnet when lifted up off the table. She touches a paperclip to the
    10·2 answers
  • (1 point) Suppose a spring with spring constant 7 N/m is horizontal and has one end attached to a wall and the other end attache
    10·1 answer
  • An airplane travels horizontally at a constant velocity v. An object is dropped from the plane and one second later another obje
    15·1 answer
  • A series circuit has two 10-ohm bulb is added in a series. Technician A says that the three bulbs will be dimmer than when only
    14·1 answer
  • A 2 kg stone moves with a speed of 1 m/s. A second 2 kg stone is moving twice as fast. Compare their kinetic energies.
    6·2 answers
  • a cylinder has a radius of 2.1cm and a length of 8.8cm .total charge 6.1 x 10^-7C is distributed uniformly throughout. the volum
    14·1 answer
  • Bullets from two revolvers are fired with the same velocity. The bullet from gun #1 is twice as heavy as the bullet from gun #2.
    6·1 answer
  • At a drag race, a jet car travels 1/4 mile in 5.2 seconds. What is the final speed of the
    15·1 answer
  • Tech A says that some electric actuators are positioned by an A/C ECU which checks the air flow with sensors. Tech B says that e
    12·1 answer
  • The net force acting on a Cessna 172 airplane has a magnitude of 1900 N and points in the positive x direction. If the plane has
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!