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stepladder [879]

3 years ago

5

If an object repels from another negatively charged object, the first object is

2 answers:

podryga [215]3 years ago

6 0

<u>Answer:</u> The first object must be negatively charged.

<u>Explanation:</u>

There are two types of charged particles: Positively charged and negatively charged.

Positively charged particles carry a positive charge negatively charged particles carry a negative charge.

We know that:

Like charges repel each other and unlike charges attract each other. This means that positive charge will be repelled by positive charge and it will be attracted by a negative charge.

In the question, an object is being repelled by another object which is negatively charged. Thus, the first object must carry the same charge as the other object.

Hence, the first object must be negatively charged.

diamong [38]3 years ago

3 0

The first object is also negatively charged that is why people say opposites attract. have a good day!

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Oduvanchick [21]

Answer:

2144.7

Explanation:

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3 years ago

A cart of mass M = 2.40 kg can roll without friction on a level track. A light string draped over a light, frictionless pulley c

sergiy2304 [10]

Answer:

Part a)

$a_{hanger} = g - \frac{T}{m}$

Part b)

$a_{cart} = \frac{T}{M}$

Part c)

$a = \frac{mg}{M + m}$

Part d)

$a = 1.35 m/s^2$

Explanation:

Part a)

For hanger we know that it will have tension force upwards while it has downwards its weight so we will have

$mg - T = ma$

so we have

$a_{hanger} = g - \frac{T}{m}$

Part b)

now for car that is rolling on the floor the net force is given as

$F = Ma$

$T = Ma$

$a_{cart} = \frac{T}{M}$

Part c)

now we know that the cart and the hanger both are connected to each other

so they must have same acceleration

so we will have

$T = Ma$

$mg - Ma = ma$

$a = \frac{mg}{M + m}$

Part d)

now we know that

M = 2.40 kg

m = 0.50 kg

so we will have

$a = \frac{0.50(9.81)}{2.40 + 0.50}$

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6 0

3 years ago

Claudia stubs her toe on the coffee table with a force of 100.ON. A) What is the

slamgirl [31]

Answer:

A.) acceleration= 55.6m/s^2

B.) acceleration of table= 5.0m/s^2

C.) More acceleration

Explanation:

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3 years ago

If a 20 N block experiences a force of kinetic friction of 8.0 N

shutvik [7]

The coefficient of kinetic friction (μ) between the block and the table is 0.4.

<h3>What is kinetic friction?</h3>

This sis the frictional force between an object in motion with the surface in contact.

μN = ff

where;

N is normal reaction due to weight of the block
ff is frictional force

μ is coefficient of friction

μ = ff/N

μ = 8/20

μ = 0.4

Thus, the coefficient of kinetic friction (μ) between the block and the table is 0.4.

Learn more about coefficient of friction here: brainly.com/question/20241845

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