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bezimeni [28]
4 years ago
7

What energy transformations take place in Joule's system?

Physics
2 answers:
attashe74 [19]4 years ago
6 0

The gravitational potential energy of the weight changes to motion energy when the weight moves down and the paddle wheel spins. The motion energy changes to thermal energy, causing the water’s temperature to rise.

(fast explanation for my fellow edmentum kids :))

svetlana [45]4 years ago
5 0

Answer:

The gravitational potential energy of the weight changes to motion energy when the weight moves down and the paddle wheel spins. The motion energy changes to thermal energy, causing the water's temperature to rise.

Explanation:

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Six seconds after starting from rest, a car is moving at 15 m/s. What is the car's
Sidana [21]

Answer:

  2.5 m/s²

Explanation:

a = ∆v/∆t = (15 m/s)/(6 s) = (15/6) m/s² = 2.5 m/s²

7 0
3 years ago
A 1500 kg tractor pulls a 750 kg trailer north and applies a 2250 N force on it. What is the force on the tractor?
Masja [62]

Answer:

law of Action and Reaction     F = 2250 N

Explanation:

The tractor and the trailer are two bodies that interact, therefore, by the law of Action and Reaction, the force that one applies on the other is equal to the force that the second body (trailer) applies on the first (tractor), but with opposite direction

          F = 2250 N

directed from trailer to tractor

3 0
3 years ago
A 42 N net force is applied to a box which slides horizontally across a floor for 9.0
Rufina [12.5K]

Answer:

The Amount of work is done on the box by the net force is 378 Joules.

Explanation:

Given:

A 42 N net force is applied to a box which slides horizontally across a floor.

Force = 42 N

Force applied for a displacement of 9.0 m

Displacement = 9.0 m

To Find:

Amount of work is done on the box by the net force = ?

i.e Work = ?

Solution:

When a force causes a object to move, work is being done on the object by the force. Work is the measure of energy transfer when a force (F) moves an object through a distance (d).

Formula is given by

Work=Force\times Displacement

Substituting the given values we get

∴ Work = 42 × 9.0

∴ Work = 378 N-m

or

∴ Work = 378 Joules

The Amount of work is done on the box by the net force is 378 Joules.

8 0
4 years ago
Which of the following statements describes an anticyclone?
Darya [45]
B. 
srry for short answer :)
3 0
3 years ago
Sound of thunder is heard 5 seconds after the flash of lightning is seen.How far away was the lightning flash? Note that sound t
elena55 [62]

Answer:

The distance covered by the lighting flash is 1700 meters.

Explanation:

Given that,

The speed of sound travels in air at a speed of about 340 meter second, v = 340 m/s

The sound of thunder is heard 5 seconds after the flash of lightning is seen, t = 5 s

To find,

The distance far away was the lightning flash.

Solution,

The distance covered by the lighting flash is given by the product of speed and time. It is given by :

d=v\times t

d=340\ m/s\times 5\ s

d = 1700 meters

So, the distance covered by the lighting flash is 1700 meters. Therefore, this is the required solution.

3 0
4 years ago
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