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3 years ago

State the basic law of charges

Physics

2 answers:

vlabodo [156]3 years ago

8 0

Answer:

Things that have the same charge push each other away (they repel each other). This is called the Law of Charges. … Things that have more electrons than protons are negatively charged, while things with fewer electrons than protons are positively charged. Things with the same charge repel each other.

Explanation:

Vlad [161]3 years ago

4 0

Things that have the same charge push each other away (they repel each other). This is called the Law of Charges. ... Things that have more electrons than protons are negatively charged, while things with fewer electrons than protons are positively charged. Things with the same charge repel each other.

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2. A force of 156 N acts on a 7.3-kg bowling ball for 0.40 s.

atroni [7]

Answer:

$62.4N\cdot s$

Explanation:

The change in momentum of the ball is equal to the impulse exerted on it, therefore:

$\Delta p = I = F \Delta t$

where

$\Delta p$ is the change in momentum

F is the average force exerted on the ball

$\Delta t$ is the time during which the force is applied

In this problem,

F = 156 N

$\Delta t = 0.40 s$

So, the change in momentum of the ball is

$\Delta p =(156)(0.40)=62.4N\cdot s$

6 0

4 years ago

What is the voltage drop across the 10.0 2 resistor?

amid [387]

Answer:

the answer is equal to 2.00v

4 0

3 years ago

What force must be provided to accelerate a 64-lb object upward at a rate of 2 ft/s2? (Use g = 32 ft/s2.)

vovikov84 [41]

Answer:

The force that must be provided to accelerate the object = 302.196 N

Explanation:

Force: Force can be defined as the product of mass and acceleration. The S.I unit of force is Newton (N).

Ft - W = ma............ Equation 1

Ft = W + ma .......... Equation 2

Where Ft = force provided, W = weight of the object, m= mass of the object, a = acceleration of the object.

Given: mass = 64 lb, g = 32 ft/s² a = 2 ft/s²

Conversion: (i) from 64 pounds to Kg = 64/2.2046

= 29.03 kg

(ii) from 2 ft/s² to m/s² = 0.3048 × 2 = 0.6098 m/s²

(iii) from 32 ft/s² to m/s² = 0.3048×32 = 9.8 m/s².

and W = mg = 29.03 × 9.8 = 284.494 N,

Substituting these values into equation 2,

Ft = 284.494 + 29.03×0.6098

Ft = 284.494 + 17.7

Ft = 302.196 N

Therefore, the force that must be provided to accelerate the object = 302.196 N

8 0

4 years ago

a machine is used to lift crates of oranges has an efficiency of 65%. if the machine provides 1300 newtons through a distance of

mylen [45]

Given data

efficiency (η) = 65 %

= 0.65

Machine provides (Work done by the machine) = 1300 × 50

= 65000 J

efficiency (η) = work done by the machine ÷ work supplied to the machine

0.65 = 65000 ÷ Input work

Input work = 100000 J

= 100 KJ

5 0

3 years ago

A brick is resting on the surface of a flat board. as one end of the board is slowly raised, what change, if any, is there in th

vovangra [49]

The normal force decreases, this is the frictional force. It will be counteracted by the force which accelerates the brick to slide downward opposite to the end where the board is raised. As the angle increases the force acting upon the brick opposite to the normal force will decrease.

5 0

4 years ago

State the basic law of charges​

State the basic law of charges