How does cycling if matter occur in earths mantle

What will be the outcome of putting litmus paper into milk? A. red paper turns blue, blue paper turns red B. red paper turns blue, blue paper does not change C. red paper does not change, blue paper turns red D.

You are an astronaut in space far away from any gravitational field, and you throw a rock as hard as you can.

The coefficient of kinetic friction between a suitcase and the floor is 2.76. if the suitcase has a mass of 71.5 kg, how far can it be pushed across the level floor with 670 j of work?

Which state of matter has the greatest distance between the individual particles

A scientist found a new bacteria in a hot water sulfur spring that uses sulfur as a source of energy instead sunlight. What kind of organism could it be?

What is the most useful property of semi-metals

Which of the following is most likely to have a volume of 75 cm³? A. a stereo system B. a laptop computer C. a portable mp3 player D. a plasma screen television

What was Issac Newton's contribution to our understanding of the fundamental forces of the universe? (Gravity, electromagnetic, strong force, weak force)

Q1) A motor has a rating power of 20 W and motor is used for 10 s. Calculate the energy supplied to the motor,

Why can't the efficiency of a heat engine be 100%?