PHYSICS HIGH SCHOOL

If a transverse wave of energy travels through the water in this pond ,how wil the floating leaf be moved

Answers

Answer 1
Answer: the floating leaf will move up and down but it will remain in horizontal translation equilibrium
Answer 2
Answer: Move up and down but stay in the same position

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In a motor, the combined effect of electric currents and magnetic forces turn electrical energy into which of the following? A. A battery B. A generator C. Mechanical energy D. Electromagnetic energy
A device that uses electricity and magnetism to create motion is called a _________motor,magnet,generator . In a reverse process, a device that uses motion and magnetism can be used to create ________ light,electromagnetism,electricity
Calculate the equivalent resultant force for the following loading system and determinethe location of the resultant force intersects the member BC from point C.StDOID175 lbA) 416 lb, 0.1 ftB) 416 lb, 10.9 ftC) 325 lb, 2.29 ftD) 260 lb. 8.71 ftNeo​

A piston exerts a force of 2,500 newtons on liquid in a cylindrical container. If the pressure on the top of the liquid is 12.5 kilopascals, find the area of the surface of the liquid, in square meters. ? please help

Answers

Here are the choices.

A. 200 m 
B. 31.25 m 
C. 0.2 m 
D. 5 m 

Pa = N/m² 
m² = N/Pa 

12.5 kPa = 12500 Pa 

m² = N/Pa 
m² = 2500 / 12500 
m² = 0.2 

C. 0.2 m²

So the correct answer is 0.2m^2

a 64kg skateboarder on a 2.0kg skateboard is on top of a ramp with a vertical height of 5.0 m what is the skateboarders maximum kinetic energy at the bottom of the ramp

Answers

The maximum kinetic energy of the skateboarders at the bottom of the ramp is 3234 J.

What is kinetic energy?

Kinetic energy is the energy of a body due to motion.

To calculate the maximum kinetic energy of the skateboarders at the bottom of the ramp, we use the formula below.

Formula:

  • K.E = Mgh............ Equation 1

Where:

  • M = mass of the skateboarder and the skateboard
  • K.E =  maximum kinetic energy of the skateboarders at the bottom of the ramp
  • h = Height of the ramp
  • g = acceleration due to gravity.

From the question,

Given:

  • M = (2+64)M = 66 kgh = 5 mg = 9.8 m/s²

Substitute these values into equation 2

  • K.E = 66×5×9.8K.E = 3234 J

Hence, the maximum kinetic energy of the skateboarders at the bottom of the ramp is 3234 J.

Learn more about kinetic energy here: brainly.com/question/25959744

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The formula for a kinetic energy KE of a falling body is
KE = mgh
where m = mass, g = acceleration due to gravity (9.8 m/s^2, constant), h = height.

The total mass of a skateboader and a skateboard is 64 + 2.0 = 66 kg.

Finally,
KE = 66*9.8*5.0 = 32340 J

One cubic foot (1 ft3 ) of seawater weighs about 64 pounds. Suppose you pour one cubic foot of seawater into a light plastic bag, tie the bag closed with no air bubbles inside, and lower it into the ocean via a light attached string. When the bag of seawater is completely submerged, how much force do you have to exert on the sting to hold it up: a. 0 lbs b. 32 lbs c. 64 lbs d. 128 lbs e. You have to push it down because it tends to come up. Please circle your answer and explain your reasoning.

Answers

The correct answer for the question that is being presented above is this one: "b. 32 lbs." Suppose you pour one cubic foot of seawater into a light plastic bag, tie the bag closed with o air bubbles inside, and lower it into the ocean via a light attached string. When the bag of seawater is completely submerged the force will be 32 lbs.

What is the momentum of a 52 kg carton that slides at 5.0m/s across an icy surface?

Answers

Formula for momentum is mass times velocity so you do 52 kg times 5 m/s and that equals 260 kg x m/s

15. A ball attached to a string is being swung in a clockwise circular path as shown in Figure 3-1. In which directionwill the acceleration on the ball be when the ball passes point A?
a. direction a
b. direction b
c. direction c
d. direction d

Answers

A ball attached to a string is being swung in a clockwise circular path as shown in Figure 3-1. direction will the acceleration on the ball be when the ball passes point A is direction a. Hence option A is correct.

Angular velocity is "rate of change of angular displacement with respect to time". i.e. ω= dθ/dt. it is also defined as angular displacement over time. i.e. ω = angular displacement/Time.

Angular velocity shows how much angle can be covered in unit time. It's SI unit rad/s. direction of the Agular velocity is given by right hand thumb rule.

Angular acceleration is rate of change of Angular velocity with respect to time.

i.e. α = dω/dt if an object changes its angular velocity in short time, we can say that it has greater angular acceleration. It is expressed in rad/s².

To know more about Acceleration :

brainly.com/question/12550364

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Why does an electrically heated mirror stay clear when a person has a shower?

Answers

The reason that moisture usually condenses on a mirror is because the air
in the room is warm and humid, the cold mirror cools the air right next to it,
and some of the water condenses out of the cooled air. If the mirror is warm,
then even the air that's right next to it stays warm, and there's no condensation
on the mirror.
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