A student used a digital stopwatch three times to time 10 oscillations of a pendulum. The timings were 13.52s12.64sand 13.58 a) Calculate (i) the average time for 10 oscillations, (ii)the time period of the oscillations
b)Estimate the accuracy of the timings, giving a reason for your estimate.

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.

What is the speed of an object at a given moment?