The element hydrogen has the highest specific heat of all elements. At a temperature of 25°C, hydrogen's specific heat is 14,253 J/kg°C. If the temperature of a 0.34 kg
sample of hydrogen is to be lowered to its freezing point which is -259° C, how
much energy will have to be lost from the hydrogen? Also write the answer in
scientific notation.

Aquarterback pedals 3.3meters southward and then run 5.7meters northward. whats the distance ? and whats the displacement?

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".