Which of the following is a compound machine?

A. ramp

B. bicycle

C. screw

D. knife

Find the potential energy of a 50gof mass 10kg standing on a building floor of 10m above the ground level

When humans look at the sky, it appears blue, but the Sun appears yellow. What causes this phenomenon? A. The atmosphere creates blue light and the Sun creates yellow light. B. The atmosphere absorbs yellow light more than blue light. C.

Old cannons were built on wheeled carts, both to facilitate moving the cannon and to allow the cannon to recoil when fired. When a 150 kg cannon and cart recoils at 1.5 m/s, at what velocity would a 10 kg cannonball leave the cannon?

Which is the formula for the functional group in an anime? A. - 0H B. - NH2 C. - COOH D. - 0H2

What are the major steps in completing gel electrophoresis?

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is

What is the weight of a 65 kg astronaut on mars?