Which of the following is most needed for cosmotologists to study the age of the universe

Name three situations where rolling friction would be more advantageous than sliding friction

What type of energy transformation would be an example of using a battery to power a handheld fan? a. kinetic b. mechanical c. electrical d. potential e. thermal f. electromagnetic g. chemical h. nuclear

A force moves an object along an x axis. how is the work done by the force related to the force?

Which of the following best describes a longitudinal wave? A. a wave which is caused by regularly repeating disturbance of the medium B. a disturbance that moves the medium along its line of travel c.

Parts of asteroids that reach Earth's surface are called A) comets B) exosolars C) meteorites D) craters

Adrian read about a new antimicrobial in a popular magazine. The advertisement claimed that the product Bactokil prevents bacterial growth. So, Adrian conducted a controlled experiment to test the product claims.

A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0 m of the race. what is the average acceleration of this sprinter, and how long does it take her to reach that speed?

How are primary and secondary succession similar and how are they different?

What relates the net force exerted on an object to its mass and acceleration?

I'm a wave, the medium moves parallel to the direction that the wave travels