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4 years ago

Help PLEASE :D

Physics

2 answers:

steposvetlana [31]4 years ago

8 0

The answer is A. As the phase changes occur, the freedom of motion of the particles increases.

patriot [66]4 years ago

4 0

The answer is A because............... As the phase changes occur, the freedom of motion of the particles increases.

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In a model of the hydrogen atom, the electron travels in circular orbits around the proton. What is the electric potential, in v

Talja [164]

Answer:

6.93 volts

Explanation:

q = magnitude of charge on proton = 1.6 x 10⁻¹⁹ C

r = radius of the orbit = 2.08 x 10⁻¹⁰ m

V = Electric potential due to proton on electron

Electric potential due to proton on electron is given as

$V = \frac{kq}{r}$

Inserting the values

$V = \frac{(9\times 10^{9})(1.6\times 10^{-19})}{2.08\times 10^{-10}}$

V = 6.93 volts

7 0

4 years ago

Question 7 (3 points)

vagabundo [1.1K]

Answer:

how you can convert electrical energy to mechanical energy

Explanation:

In the Electric Motor lab, what did you attempt to demonstrate with the electric motor?

In the Electric Motor lab, the experiment usually demonstrate energy conversion process, from electrical energy to mechanical energy. This mechanical energy can also be converted back to electrical energy using a generator.

Therefore, what you attempted to demonstrate with the electric motor, is how you can convert electrical energy to mechanical energy

5 0

4 years ago

Are you aware of human rights violations happening in your community? Explain.

MA_775_DIABLO [31]

Answer:

Answer: We should be aware of human rights violation happening in our community. In our community, there are so many people who cannot practice their own religion and rituals. ... In many nations around the globe, domestic violence is another disadvantage in our society and another example of "human rights violations".

Explanation:

hope this helps u!!!!

3 0

4 years ago

How does kinetic energy affect the stopping distance of a small vehicle compared to a large vehicle?

Vilka [71]

Well, I may not know the exact answer, but I can confirm because of mass. The more mass an object has, the less control you have on it, so it can't be stopped easily. Let's take a small rock and a boulder for example. When a small rock rolls on the ground, it can easily be stopped by your hand or foot. But when you have to deal with an enormous boulder, you can't easily stop it with one just person. You'll need more people. So the answer is because the smaller vehicle has a lesser mass than the larger vehicle. (if you are looking for the answer, just look at the end.

5 0

4 years ago

To meet a U.S. Postal Service requirement, employees' footwear must have a coefficient of static friction of 0.5 or more on a sp

Vlada [557]

Answer:

the minimum time interval is 0.77 seconds

Explanation:

given data

coefficient of static friction = 0.5

coefficient of static friction shoes= 0.825

travel s = 2.40 m

to find out

what is the minimum time interval

solution

we know newton 2nd law

force = mass × acceleration

and

force acting on person due to friction

force = coefficient of static friction shoes × mg

so we can say

coefficient of static friction shoes × mg = ma

a = coefficient of static friction shoes × g

and we know g is 9.8 m/s²

distance formula by kinematic relation

distance = ut + 0.5 × at²

here put a value and u is zero because initial speed

2.40 = 0 + 0.5 × coefficient of static friction shoes × g× t²

2.40 = 0.5 × 0.825 × 9.8 × t²

t = 0.77 s

the minimum time interval is 0.77 seconds

5 0

4 years ago