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
ryzh [129]
2 years ago
13

A 200.0 kg piano is elevated by a crane to a height of 10.0 meters above a sidewalk. If the rope holding the piano breaks, what

will the potential energy of the piano be when it has fallen 5.00 meters?
a) 0 J
b) 9,810 J
c) 10,000 J
d) 19,620 J
Physics
1 answer:
Nitella [24]2 years ago
5 0
All that business about the crane and the rope and the falling
is only there to confuse us.

The piano ended up 5 meters above the ground.

           Potential energy = (mass) (gravity) (height)

                                   = (200 kg) (9.81 m/s²) (5 m)

                                   = (200 · 9.81 · 5)  (kg-m²/s²)

                                   =   9,810 joules   . 
You might be interested in
The 'pleasure centers' are located in the brain structure known as the: (2 points)
ladessa [460]

Answer:

The 'pleasure centers' are located in the brain structure known as the: amygdala. See the explanation below, please.

Explanation:

The amygdala is part of the limbic system and deals with the control of emotions and feelings, through responses of satisfaction or fear. It has a close bond with the frontal lobe which can inhibit some behaviors.

5 0
2 years ago
The total magnification of a specimen being viewed with a 10X ocular lens and a 40X objective lens is _____.
raketka [301]

Answer:

total magnification = 400 X

Explanation:

given data

ocular lens = 10 X

objective lens = 40 X

to find out

total magnification

solution

we know that total magnification is express as

total magnification = Objective magnification ×  ocular magnification  .................1

put here value we get

total magnification =  10 × 40

total magnification = 400 X

3 0
3 years ago
Two points are located on a rigid wheel that is rotating with decreasing angular velocity about a fixed axis. Point A is located
Nata [24]

Answer:

4. Both points have the same instantaneous angular velocity

Explanation:

Angular velocity is a measure of the the number of rotations per unit time. This does not depend on the radius of the wheel. Hence, all points on the wheel have the same angular velocity. This invalidates option 1.

The centripetal acceleration is given by the product to the square of the angular velocity and the radius or distance from the centre. A and B are located at different distances from the centre. Hence, they have different centripetal acceleration. This invalidates option 2.

The tangential acceleration depends on the linear velocity which itself is a product of the angular velocity and the distance from the centre. Hence, it is different for both points because they are at different distances from the centre.

Since both A and B are fixed points on the wheel, they move through equal angles in the same time. In fact, for any other fixed point, they all move through the same angle in the same time. This invalidates option 5.

4 0
2 years ago
A t-rated switch may be used to (its/a) ______ current capacity when controlling an incandescent lighting load.
jok3333 [9.3K]

<u>Rated </u>

A t-rated switch may be used to (its/a) <u>Rated</u> current capacity current capacity when controlling an incandescent lighting load.

<h3>What is "current rating"?</h3>
  • The greatest current that a fuse is rated to carry for an infinite duration without significantly degrading the fuse element is known as the current rating.
  • There is also a large selection of power switching transistors that have voltage ratings well over 1000V and current ratings up to several hundred amps.

<h3>What does the term "rated current" mean?</h3>
  • When an electrical device receives its rated voltage and outputs its rated power, it flows at its rated current.
  • So, when a device is designed for a certain amperage, that amperage is referred to as the equipment's rated current.

<h3>What does electrical "rated" mean?</h3>
  • An electrical appliance's rating reveals the voltage range at which it is intended to operate as well as the current consumption at that range.
  • These numbers are typically shown on a rating plate that is fastened to the device, such as 230 volts, 3 amps.

To learn more about current capacity visit:

brainly.com/question/27987428

#SPJ4

6 0
1 year ago
Traveling into space from Earth, which of these would he be able to reach first?
mr Goodwill [35]

You didn't Provide choices to choose from. Please fix question and I'd love to be able to help.

5 0
2 years ago
Read 2 more answers
Other questions:
  • Consider a concave mirror with a focal length of 12.60 cm. a) Find the image distance when the object distance is 12.60 cm. (Ans
    12·1 answer
  • A rock rolls down a steep hill. Its intial velocity is 1 meter per second. By the time it reaches the bottom of the hill 30 seco
    9·1 answer
  • What is the value of x if one side is 8 and the other side is 6
    13·1 answer
  • What is the acceleration of an object if it goes from a velocity of +25 m/s to rest in 5.0 s?
    7·1 answer
  • A 3.00 kg pool ball is moving to the left with a speed of 4.30 m/s without friction. If it experiences an impulse of -4.00 Ns, w
    7·1 answer
  • A 1.5 in diameter solid shaft is made of a steel alloy having an allowable shear stress of �allow = 12 ksi. a) Determine the max
    14·1 answer
  • Hydroelectric power uses: wind water coal the sun
    13·1 answer
  • Please, please, please help me!!!!!!
    9·1 answer
  • In this activity, you will analyze the motion of a cart being pulled up an inclined plane at a constant speed. The angle of the
    13·1 answer
  • Please help me i’ll mark u branliest !!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!