PHYSICS HIGH SCHOOL

How many electrons will there be in 5 coulombs of charge? (the charge of one electron is 1.6 x 10^-19 Coulombs)
thanks!

Answers

Answer 1
Answer: There's no physics or electronics to this question.
It's just arithmetic.

The last part of the question TELLS you how many 'coulombs per electron'.

If you just flip that fraction (divide ' 1 ' by it, take its reciprocal), then
you'll have 'electrons per coulomb',  and 5 of those will answer the question.

I got 31,250,000,000,000,000,000 .  I could be wrong.  You should check it.

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Explain why water boiling in a container stops
boiling momentarily when the lid is removed​

Answers

Answer:

It's because it tips over the threshold from nucleate boiling, which we can see, to convection boiling, which we can't. ... Even if the steam stayed in the pot, it would still stop boiling when you removed the heat. The steam and water in a liquid/vapour mixture are at the same temperature (100ºC).

Explanation:

The internal energy of a material is determined by

Answers

Answer:

Explanation:

The internal energy of any material is calculated as the sum of kinetic and potential energy of randomly distributed molecules.

This energy depends on temperature as well, if the temperature will increase the randomness will also increase hence will be the internal energy.

If any work is done on the system, then also the internal energy of the system is increased.
The combined amount of kinetic and potential energy of its molecules

A charged object cannot attract a neutral object.
a. True
b. False

Answers

That's false.  One of the first demonstrations of static attraction is
running a comb through your hair to charge it, and then using it
to pick up uncharged bits of tissue paper.

Miners find rock that was formed from magma deep underground what type of rock could it be

Answers

When the igneous rock is deep underground for many years, it will form into metamorphic rock under extreme pressure and temperature. It could also form into magma when it melts deep beneath the layers of earth or it could form sediments when subjected to weather erosion.

(Coulomb's Law) can anyone tell me if there is any cases in which the electrostatic force between 2 objects is 0?

Answers

Well, just look at Coulomb's law, set it equal to zero, and then
see what it would take to make the equation true.

Electrostatic force =
(a constant number) x (charge#1) x (charge#2) / (distance between them)² = 0

There you have an equation, with some stuff on the left side that's all equal to zero.

The stuff is all in the form of one fraction.  In order for the fraction to be zero,
either the numerator is zero, or else the denominator is infinite.

So ?

The force is zero if ...

-- at least one of the charges is zero, OR

-- the charges are an infinite distance apart.

If you can arrange for either of those conditions, then you'll have zero force.
Eletrostatic force between only two charges never is null. But if there are interactions with 3 or more charges is possible between two of them be null.

Help Please ! A fisherman casts his lure at an angle of 33 degrees above the horizontal. The lure reaches a maximum height of 2.3 m. Assuming no frictional forces, what was the initial velocity the fisherman gave the lure when he cast it? 12.34 m/s


28.45 m/s


34.91 m/s


21.29 m/s

Answers

The initial velocity is 12.34 m/s

Explanation:

The vertical component of the initial velocity determines the maximum height.

The formula to apply is : v²=u²+2as , where

v=y-component, final velocity = 0 m/s

u= y-component of the initial velocity = ?

s= distance traveled = 2.3 m

a=acceleration due to gravity = -9.81 m/s²

Using the values in the equation

v²=u²+2as

0²=u²+2×2.3×-9.81

0=u²-45.126

45.126=u²

√45.126= u

6.7175 m/s

The vertical component of velocity is given by;

velocity*sin(angle with horizontal)

velocity=6.7175 / sin 33°

=12.338 m/s

=12.34 m/s

Learn More

Finding Initial velocity :brainly.com/question/1858995

Keywords : angle, maximum height, initial velocity, friction

#LearnwithBrainly
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