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2 years ago

What is the momentum of a 3 kg bowling ball moving at 3 m/s?

Physics

1 answer:

Nataly [62]2 years ago

5 0

Explanation:

p denotes momentum
m denotes mass
v denotes velocity

→ p = 3 kg × 3 m/s

→ p = 9 kg.m/s

Option D is correct.

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Which best describes what happens when light traveling through air enters water at an angle?

vovangra [49]

I think it is "A'' 'It moves along straight lines in air and changes direction when it enters water.

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3 years ago

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Each of 100 identical blocks sitting on a frictionless surface is connected to the next block by a massless string. The first bl

o-na [289]

Answer:

The tension in the string connecting block 50 to block 51 is 50 N.

Explanation:

Given that,

Number of block = 100

Force = 100 N

let m be the mass of each block.

We need to calculate the net force acting on the 100th block

Using second law of newton

$F=ma$

$100=100m\times a$

$ma=1\ N$

We need to calculate the tension in the string between blocks 99 and 100

Using formula of force

$F_{100-99}=ma$

$F_{100-99}=1$

We need to calculate the total number of masses attached to the string

Using formula for mass

$m'=(100-50)m$

$m'=50m$

We need to calculate the tension in the string connecting block 50 to block 51

Using formula of tension

$F_{50}=m'a$

Put the value into the formula

$F_{50}=50m\times a$

$F_{50}=50\times1$

$F_{50}=50\ N$

Hence, The tension in the string connecting block 50 to block 51 is 50 N.

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3 years ago

What is the difference between diatomic and poly-atomic molecules? Site some examples.

Olegator [25]

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3 years ago

Why did one liter of have a greater mass than the other liter prepared by a different method

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3 years ago

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sveta [45]

Answer:

5 seconds