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)

14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is

What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.