Imagine you have a buzzer that heats up as it runs. If 20 J are input to the system and 5 J are used for the buzzer and 15 J are used to heat the surroundings, what is the efficiency of the buzzer

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.

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?