(answer fast and correctly and i will give you brainiest and 5 star's. )

Physics

2 answers:

oee [108]3 years ago

7 0

Answer:

Energy cannot be created or destroyed.

Explanation:

its in the name, law of "conservation" of energy. energy can only change forms not be destroyed

sattari [20]3 years ago

5 0

Answer: Energy cannot be created or destroyed.

Explanation: The law of conservation of energy states that energy can neither be created nor be destroyed due to energy loss. It can only change its states from one energy state to another.

The efficiency is defined as the ratio of output work to the input work. The efficiency of the fan is not 100%. Because some of the energy is lost in the form of heat and sound. No machine is 100% efficient. There is always some loss of energy takes place.

I really hope this helps and sorry it's late.

You might be interested in

S the Sun. Points Wand

klasskru [66]

Answer:

the answer is points wand sun.

Explanation:

7 0

3 years ago

Read 2 more answers

A friend says that the reason one's hair stands out while touching a charged Van de Graaff generator is simply that the hair str

Llana [10]

Answer:

Explanation:

Yes I agree with the statement .

When a person who is perfectly insulated from the earth , touches a Van de Graaff , his body acquires charge . when the hair acquires it, it stands out due to mutual repulsion . It is to be noted here that at pointed areas on a surface , there is larger accumulation of charge. Accumulation of charge is greater at hair tops .

It is also a general observation that when a bird sits on high tension wire , his feather stands out due to the same reason.

5 0

3 years ago

Which statement is true of an object in equilibrium?

Brilliant_brown [7]

Answer:

Explanation:

An equilibrium is when all forces are the same or canceled out. So it would have to be c.

6 0

3 years ago

Read 2 more answers

Hii please help i’ll give brainliest!!