27 grams of 25.0 c aluminum is heated until its temperatures is 54 c. if the specific heat of aluminum is 0.90 j/g c , calculate the amount of heat energy needed to cause this rise in the temperature

q=mxcpx delta t

v. 656 j
w.705 j
x.608 j
y.0

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

What is the angular momentum of the bar about the axle?