If a solar system has one planet and the planet travels at a constant speed, then the planet's orbit will be _____. A. circular B. elliptical C. the same as the other body in the...

If a solar system has one planet and the planet travels at a constant speed, then the planet's orbit will be _____. A. circular B. elliptical C. the same as the other body in the...

Which of the following are true about a planet when it is at its greatest distance from the Sun? A. It is at aphelion. B. It is at perihelion. C. It is moving at its greatest speed...

As a ship approaches a cliff, it's siren is sounded and the echo is heated in the ship after 12 seconds. 2.1 minutes later the siren is sounded again and the echo is heated 8 seconds later . If the...

A 15.53 kg loose bag of soil falls 5.50 m at a construction site. If all the potential energy of the fall is retained by the soil in the bag, how much will its temperature increase? (csoil = 0.200...

You have an exciting summer job working on an oil tanker in the waters of Alaska. Your Captain knows that the ship is near an underwater outcropping of land and wishes to avoid running into it...

Define the theorem and write the associated quotation

What happens to kinetic energy when mass is doubled? When speed is doubled?

Your artist friend is designing a kinetic sculpture and asks for your help since she knows that you have had physics. Part of her sculpture consists of a 6.0 kg object and a 4.0 kg object which...

Does anyone know the answer to this question? I really need this as soon a possible

An 800 N board is moved a distance of 0.06 m by a screw. If the efficiency of the screw is 18%, what was the input work on the screw? A. 48 J B. 144 J C. 267 J D. 480 J

If the work output from a screw is 65 J and the work input is 90 J, what is the percent efficiency of the screw? A. 56% B. 65% C. 72% D. 138%

A pulley system has a percent efficiency of 74%. How does this value change over time as this machine does work on a bucket of sand? A. It decreases. B. It increases. C. It doesn't...

Someone exerts a force of 67 N over a distance of 38 cm on a wedge. If the efficiency of the wedge is 50%, what is the output work? A. 12.7 J B. 50.9 J C. 335 J D. 1,273 J

If you put 75 newtons of force into a machine and lift an object with a weight of 150 newtons, what can you say about the percent efficiency of the machine? A. The machine is 50% efficient...

The horizontal component of motion of a projectile undergoes acceleration due to gravity.

Fred travels past Alice at a constant speed of 0.886c in the positive x direction. Fred is holding a meter stick at an angle of 38.8° with respect to the +x axis. What is the length (in m) and...

my question is when does a lens and mirror combination have an i3. cause there are examples in the internet that doesnt have i3 such as https://www.youtube.com/watch?v=aGHnH_4KFRE. and there...

An elephant seal weighing 22,000 N is lolling up happily on a beach. Which of the following must be true? A.) Gravity it not affecting the elephant seal at all, or he would crack through the earth...

1. You are standing 10 meters from a light source. Then, you back away from the light source until you are 20 meters away from it. From your perspective, what has happened to the intensity of the...

The first people to reach the summit of Mount Everest (Tenzing Norgay of Nepal and Sir Edmund Hillary of New Zealand) climbed the last 400 meters of the ascent in 4 hours (or about 14,400 seconds)...