Pick the two correct statements.

A curtain blind uses a wedge.

B. A bicycle uses a wheel and axle.

C. A seesaw uses a lever.

D. An axe uses a pulley.

How much heat is absorbed by a 31g iron skillet when it's tempature rises from 8c to 81c

If an object has the the mass of 3kg, calculate the force acting on it.

Light from the sun reaches earth in 8.3 min. how far is the earth from the sun? the velocity of light is 3 Ã 108 m/s. answer in units of m.

Do you know why ice cubes boil (after they melt of course) faster than a water in a room temperature?

A 25 n box is pulled across a frictionless surface by an applied force of 22 n. the coefficient of kinetic friction between the box and the surface is 0.3. find the acceleration of the box. use g = 10 m/s2.

When a fork is placed in a hot piece of lasagna, thermal energy is transferred up the fork by ...

Levi observed properties of four different waves and recorded observations about each one in his chart.

A rocket is shot straight up from the earth, with a net acceleration (acceleration by the rocket engine minus gravitational pullback) of during the initial stage of flight until the engine cut out at sec.

Which moon has a thick atmosphere made mostly of nitrogen?

J. J Thompson proposed that atoms were made up of positively charged particles with electrons scattered into them. How did he reach this conclusion?