Hint 1 A tire has a tread pattern with a crevice every 2.5 cm. Each crevice makes a single vibration as the tire moves. What is the frequency of these vibrations if the car moves at 37 m/s

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.