Which of the following is used in Sonata II's prepared piano?

A. Small pieces of rubber

B. Copper wire

C. Coins

D. Wooden blocks

Sixty miles is how many sec?

A ball is released from a hight above the ground, find the velocity after 5 sec. take g as 10m/square

How many LEDs must be combined into one light source to give a total of 3.8 W of visible-light output (comparable to the light output of a 100 W incandescent bulb) ?

It will be easier to push a sofa across a rough surface like carpet and a smooth surface like a hardwood floor. Truue or False?

Which of the following is a form of mechanical energy? A. Chemical energy B. Kinetic energy C. Nuclear energy D. Thermal energy

Can you get sunburned through glass?

Which statement about a signal transduction pathway is true? a. A signal transduction pathway provides a means for a signal molecule to pass through the cell membrane and initiate a chain of events inside the cell. b.

If a car is traveling on the highway at a constant velocity, the force that pushes the car forward must be A. greater than the force of friction exerted upon the car. B. less than the force of friction exerted upon the car. C.

Tom stops using a new skin cream for five days to determine if the cream is the cause of a recent rash. What stage of the scientific method is Tom using?

Use your observations to determine qualitatively how the strength of the electric interaction between charged objects depends on the distance between them. Explain your reasoning (this is trickier than it might seem at first).