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Lelechka [254]
3 years ago
6

30 points - how do I do 2 b and c?

Physics
1 answer:
Delvig [45]3 years ago
7 0
1. its must be B and 2. must be C
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The rubber and plastic used in protective clothing do not allow the flow of electric charge
erica [24]

Answer:

True

Explanation:

Insulators are the material that does not allow electricity to pass easily through them. The reason behind using an insulator as a protective layer on an electrical wire or appliances is that they show good resistance to electricity. That prevents us from getting an electrical shock. And rubber and plastics are good examples of the insulator.

Hence our statement is true.

6 0
3 years ago
In a police ballistics test, 2.00-g bullet traveling at 700 m/s suddenly hits and becomes embedded in a stationary 5.00-kg wood
aksik [14]

Answer:

  • Here we use the conservation of momentum theorem.

  • m stands for mass, and v stands for velocity. The numbers refer to the respective objects.

  • m1v1 + m2v2 = m1vf1 + m2vf2

  • Since the equation is perfectly inelastic, the final velocity of both masses is the same. Let’s account for this in our formula.

  • m1v1 + m2v2 = vf(m1 + m2)

<u>Let’s substitute in our givens.</u>

(0.002 kg)(700 m/s) + (5 kg)(0 m/s) = vf(0.002 kg + 5 kg)

I assume you are proficient in algebra I, so I will not include the steps to simplify this equation.

Note that I have considered the bullet’s velocity to be in the positive direction,

The answer is vf = 0.280 m/s

3 0
3 years ago
Nightmares occur during ___ sleep
sladkih [1.3K]
Happens during rim sleep
3 0
3 years ago
Which term describe the substance that forms when two or more types of atoms join?
xz_007 [3.2K]
C i’m pretty sure but don’t take me as your first answer i just need to answer a question to ask one.
4 0
3 years ago
Read 2 more answers
Radiation from the Sun reaching Earth (just outside the atmosphere) has an intensity of 1.4 kW/m2. (a) Assuming that Earth (and
baherus [9]

To solve the problem we will require the concept of Force as a definition of pressure and Area, and the concept of light pressure itself determined by the relationship between intensity and the speed at which light travels. We will match the terms and find the desired force value,

F = PA

Here,

P = Pressure

A = Area

Pressure due to the light of the sun will be

P= \frac{I}{c}

Here,

I = Intensity

c = Speed velocity

Equation both therms we have that

F = \frac{IA}{c}

We have a circular area then

F = \frac{I(\pi r^2)}{c}

Replacing with our values (Adding the radius of the Earth)

F = \frac{(1.4*10^3W/m^2)(\pi (6.32*10^6m)^2)}{3.0*10^8m/s}

F = 6.0*10^8N

Therefore the Force on Earth due to radiation pressure is 6*10^8N

4 0
3 years ago
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