A 2,250.0 kg block of ice at 0°C is added to a picnic cooler. How much heat will the ice remove as it melts to water at 0 °C?

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".

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?

Which change would make the diagram correct?