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dedylja [7]
3 years ago
8

Can a light bulb work without energy transfer.

Physics
1 answer:
Scrat [10]3 years ago
6 0

Answer:Energy cannot be created or destroyed. It can be stored, or it can be transferred i.e. from a hot object to a cool object by conduction, convection or radiation.

Explanation:

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Which is the most likely place a metamorphic rock might form? on the slopes of an active volcano on the ocean floor eight kilome
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QUESTION 3 ( MARKS]
horrorfan [7]

Answer:

392 N

Explanation:

Draw a free body diagram of the rod.  There are four forces acting on the rod:

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At the other end of the rod (point X), you have the weight of the sign pointing down, mg.

Also at point X, you have the tension in the wire, T, pulling at an angle θ from the -x axis.

Sum of the moments at the wall:

∑τ = Iα

(T sin θ) L − (mg) L = 0

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T = 392 N

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