Which of the following frequencies produces the highest pitched sound?
a 150 Hz
b 420 Hz
680 Hz
d 870 Hz
e None of the above

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?

What is the specific heat of wood ?