A 67 kg astronaut floating in space throws a 4.2 kg rock at 5.6 m/sec. How fast does the astronaut move backward?

A common source of 'potential difference' or 'voltage' is a cell or battery. Explain

car a is traveling at 85 km/h while car b is traveling at 64 km/h. what is the relative velocity of car a and b. if they're both traveling in the same direction

4. What do you think would happen to the velocity of each ball after the collision if you set the masses and initial velocities of balls A and B equal?

The amount of gravity between 1kg of lead and Earth is ___ the amount of gravity between 1kg of marshmallows and Earth. a. greater than b. less than c. the same as d. none of the above

A ball is dropped off of a tall building and falls for 2 seconds before landing on a balcony. a rock is then dropped from the top of the building and falls for 4 seconds before landing on the ground.

Wave can be described as A. a continuous transmission of energy from one location to the next B. The disturbance of particles in an area C. The transmission of energy through individual particles D. The motion of particles in a medium

A germ is also called a microorganism or a microbe. True False

What is 1.33Ω plus 2Ω?

As a fire truck approached Mary, the pitch of the siren got higher. once the fire truck passed and moved away, the sirens pitch got lower. this change in pitch is because in the sound waves

Find the magnitude of the sum of these two vectors