A0.200 kg block of a substance requires 3.59 kj of heat to raise its temperature by 20.0 k. what is the specific heat of the substance? a. 2,020 j/(kg * k) b. 383 j/(kg*k) c. 130 j/(kg * k) d. 897 j/(kg*k)

Asample of a gaseous substance changes into a liquid

Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]

With i really need the correct answer!