A Volvo moving at a constant speed of 20 m/s passes a Saab waiting at a red light just as the light turns green. If the Saab begins from rest and accelerates at 2 m/s?: a. How far does the Saab travel before drawing even with the Volvo?
b. How fast is the Saab traveling at this point?
c. On a single displacement vs time axis, graph the displacements of the Volvo and Saab.

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects