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2 years ago

What does the abbreviation DC stand for in physics?

Physics

2 answers:

EastWind [94]2 years ago

6 0

<span>dc = direct current
ac = alternate current</span>

matrenka [14]2 years ago

6 0

Answer:

Option (C)

Explanation:

It stands for direct current.

There are two types of electric current.

1. Alternating current: it is current which changes its direction after a fixed interval if time. It varies sinosudially.

2. Direct current: it is the current which do not changes its direction. It is obtained by a battery.

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A rock is thrown upward from the level ground in such a way that the maximum height of its flight is equal to its horizontal ran

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Answer

a) For the rock

$\dfrac{v_t^2sin 2\theta}{g} = \dfrac{v_t^2sin^2\theta}{2g}$

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2 years ago

A student pulls horizontally on a 12 kg box, which then moves horizontally with an acceleration of 0.2 m/s^2. If the student use

polet [3.4K]

The net force of the object is equal to the force applied minus the force of friction.
Fnet = ma = F - Ff
12 kg x 0.2 m/s² = 15 N - Ff
The value of Ff is 12.6 N. This force is equal to the product of the normal force which is equal to the weight in horizontal surface and the coefficient of friction.
Ff = 12.6 N = k(12 kg)(9.81 m/s²)
The value of k is equal to 0.107.

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