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3 years ago

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three small balls each of mass 13.3g are suspended separately from a common point by silk threads, each 1.17m long. The balls ar

e identically charged hang at the corners of equilateral triangle 15.3 cm on a side. Find the charge on each ball

1 answer:

RideAnS [48]3 years ago

8 0

The balls are identical charges hang at the corners of equlilateral

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Which are two characteristics of a proton

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Positive electric charge and found inside the nucleus

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Concerning the work done by a conservative force, which of the following statements, if any, are true? It can always be expresse

Vera_Pavlovna [14]

Answer:

It is independent of the path of the body and depends only on the starting and ending points.

Explanation:

In Physics we define a conservative force as a force that is independent of the path of the body and depends only on the starting and ending points.

For conservative forces we can write;

KEi + PEi = KEf +PEf

where;

KEi= initial kinetic energy

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A 0.30-kg object is traveling to the right (in the positive direction) with a speed of 3.0 m/s. After a 0.20 s collision, the ob

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Answer:

$I = -2.1 kg.m/s$

Explanation:

Given,

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initial speed, v_i = 3 m/s

time of collision = 0.20 s

final speed, v_f = -4 m/s

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$I = m (v_f-v_i)$

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A person standing on the moon watching the earth rotate

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Answer:

v₁ = 37.5 cm / s

Explanation:

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v = w r

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w = v₀ /r₀

for the outside of the spool r₁ = 1.5 cm

w = v₁ / r₁1

since the angular velocity is the same we set the two expressions equal

$\frac{v_o}{r_o} = \frac{v_1}{r_1}$

v1 = $\frac{r_1}{r_o} \ \ v_o$

let's calculate

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v₁ = 37.5 cm / s

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3 years ago