What is the maximum speed when the conditions are mass =450 kg, initial height= 30 m, and the roller coaster is initially at rest? A. 30 m/s
B. 24.2 m/s
C. 93.9 m/s
D. 132, 300 m/s

Distinguish between a transverse wave and a longitudinal wave.

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

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?