An alien civilization is in orbit around a high mass supergiant star. should they stay or should they go elsewhere? why?

Energy is the capacity to do work but not to produce heat. True or false

True or false science requires theories that can be tested by research.

A football punter wants a punted football to travel 60.0 m in the horizontal direction, and stay in the air for 5.00s. What must be the magnitude and the direction of the initial velocity of the football?

What is the density, in grams per milliliter (g/mL), of a substance with a mass of 50 grams and a volume of 100 mL? Explain your answer.

Transparent 5. What is reflection? a. a light wave bounces back after hitting a barrier b. a light wave passes through a different medium, making an object appear bent c.

Which safety measures should you follow during a thunderstorm? Check all that apply. (A) Avoid touching anything that conducts electricity. (B) Avoid touching a person who has been struck by lightning. (C) Go outside.

1. An automobile with a mass of 1000 kg accelerates when the traffic light turns green. If the net force on the car is 4000 N, what is the car's acceleration?

Imagine that you replace the block in the video with a happy or sad ball identical to the one used as a pendulum, so that the sad ball strikes a sad ball and the happy ball strikes a happy ball.

Under what conditions will an object experience a gravitational force? Under what conditions will an object experience an electric force? Under what conditions will an object experience a magnetic force?

A basketball player pushes down with a force of 34 N on a basketball that is inflated to a gauge pressure of 9 x 104 Pa. What is the diameter of contact between the ball! and the floor?