PHYSICS MIDDLE SCHOOL

All of the outer planets have what? (Moons and rings system, just rings systems, just moons, or humans)

Answers

Answer 1
Answer: They all have rings and moons

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What effect would the temperature have on the time kept by a pendulum clock if the pendulum rod increase in length with an increase in temperature

Answers

As we know the time period of pendulum is given by the equation

T = 2\pi \sqrt{(L)/(g)}

so here

L = length of the pendulum

Now on increasing the temperature due to thermal expansion the length of the pendulum will increase and due to this the time period of the pendulum will also increase

Now due to increase in time period of the pendulum the clock will become slow and it will give incorrect time due to this increase in temperature

Thermal expansion increases the pendulum period, and the clock will lose time

Further explanation

Simple Harmonic Motion is the motion of an object (repetitive movement) through its equilibrium point where the frequency of vibrations / oscillation per second is constant

The motion that occurs in the pendulum is one example of simple harmonic motion

Terms used:

  • Deviation (y): the object's distance from the balance point
  • Amplitude (A): maximum deviation
  • frequency (f): number of vibrations at any time
  • Period (T): the amount of time in one vibration

Whereas the relationship T and f:

\displaystyle T=(1)/(f)\n\nf=(n)/(t)

n = number of vibrations / oscillation

t = time (s)

Formula used:

\large{\boxed{\bold{T=2\pi \sqrt{(L)/(g) }}}\rightarrow (1)/(f)=2\pi \sqrt{(L)/(g) }

From this formula shows that the period is proportional to the length of the pendulum rod.The longer the pendulum rod , the greater the amount of time in one vibration

If thermal expansion occurs in the pendulum clocks, the pendulum rod changes in length ,proportional to the temperature change, and increases the pendulum period, so the clock will lose time

Learn more  

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Can black holes merge

Answers

It is possible for two black holes to collide. Once they come so close that they cannot escape each other's gravity, they will mergeto become one bigger black whole.

Which of Newton's motion laws BEST explains HOW a rock accelerates when it is dropped off a bridge?A.
first


B.
second


C.
third

Answers

Answer:

a

Explanation:

If you rub a balloon on a piece of fabric or carpeting and then hold it against your head, your hair can stand on end. Why does this happen?

Answers

AS Hitler once said, Static Electricity my dear watson

A carbon atom can form four covalent bonds. how many valence electrons does a carbon atom have

Answers

A carbon atom has 4 valence electron:)

Please help me on this I know it’s not B this stuff is kinda hard for me

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There you go again.  Newton's 3rd Law says "for every action there is an EQUAL OPPOSITE reaction.".

EQUALand OPPOSITE

If THIS MUCH force pushes the bullet THAT way, then THE SAME amount of force pushes the rifle THIS way.

The bullet pushes backward on the rifle with the same amount of force as the rifle exerts on the bullet.
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