PHYSICS HIGH SCHOOL

A restoring force of magnitude F acts on a system with a displacement of magnitude x.In which of the following cases will the system undergo simple harmonic motion? A) F x
B) F
C) F sin x
D) F x2
E) F 1/x

Answers

Answer 1

Answer:

Answer:

option A

Explanation:

given,

restoring force = F

magnitude of displacement = x

the system undergo simple harmonic motion.

simple harmonic motion follows Hooke's law

now.

$F\ \alpha \ x$

Hooke's law state that force is directly proportional to the displacement.

hence, the correct answer is option A

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A 0.145-kg baseball pitched at 37.5 m/s is hit on a horizontal line drive straight back toward the pitcher at 57.0 m/s . If the contact time between bat and ball is 2.50×10−3 s , calculate the average force between the ball and bat during contact.
Can a simple machine’s efficiency ever be greater than 100%?Explain your answer.
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What is the purpose of the Climate Friendly Farming Project?
which situation involves shear? a. convergent boundaries b. isolated rift valleys c. volcanic mountain ranges d. frequent shallow earthquakes e. new rock formations

If one body is positively charged and another body is negatively charged, free electrons tend toA. remain in the positively charged body.
B. move from the negatively charged body to the positively charged body.
C. remain in the negatively charged body.
D. move from the positively charged body to the negatively charged body.

Answers

Hello, AphCoffee!

B. move from the negatively charged body to the positively charged body

This is because the negative free electrons will be attracted to the positive body and then the electrons will move to the positive body.

Hope this helps :)

What do you mean by average velocity

Answers

Answer:

Here is the answer. Hope this helps you!

Explanation:

Average velocity is the sum of initial and final velocity divided by 2. I t is the same as total Displacement divided by total time. Average velocity is calculated when the body is in non-uniform motion (also when total displacement and time is not given). The formula is as follows:

u + v/2 = $v_(av)$

Average velocity = Average speed

during motion in a straight line. therefore, the above mentioned formula can be used for calculating average speed as well, when the direction is one and only the same, that is, during motion in a straight line. The S.I unit remains the same-

m/s.

Since velocity is vector, average VELOCITY is also vector. However, Average SPEED is scalar as speed is scalar. both can be equal only when the distance = displacement and when they are following the same direction of motion.

What is the leading cause for change between states of matter?

Answers

Change of energy (normally potential energy via temperature change)

Which of the following is explained by general relativity? A. How massive stellar objects can form a lens. B. Why moving muons decay more slowly than stationary ones
C. Why atomic clocks tick more slowly when in motion
D. Why no object can move faster than light through space-time

Answers

The correct answer is both c and d. In general relativity, it explains why atomic clocks tick more slowly when in motion and why no object can move faster than light through space-time. The theory of relativity was formulated by Albert Einstein.

The forklift exerts a 300.0 N force on the box and moves it 15.0 m into the air. How much work does the forklift do? A. 500 J B. 1.50 * 10^3 J C. 4.50 * 10^3 J D. 0.00 J

Answers

Since the equation for Work is as follows....

Work = Force x Displacement

Your equation is...

Work = 300N x 15m

Work = 4,500 Joules

Answer:

0.00 J

Explanation:

PLZ EXPLAIN THE EQUATION AND I WILL GIVE BRAINLIST You are out and about in the country and your father sees a rock that he really wants in the yard. Now you must get the very heavy rock into the back of a truck. The truck bed is 3 feet off the ground. Your father pulls out a 5-foot plank and begins to set up a ramp. At the same time, you (who know about mechanical advantage!) have found a plank that is 8 feet long, and you show it to your father. Which plank will give you the most mechanical advantage? Calculate the MA for each plank