The parabola above is a grph of speed as a function of time t for an object. which of the tollowing graphs best ropresents the magnitude f of the net force exerted on the object as a function of time t? (a) f (b) f tci a 100-newton weight is suspended by two cords as shown above. the tension in the slanted cont (a) 50n (b 1oon (c is 24.

Astone is thrown into a pond. what happens to the amplitude of the resulting waves as they get farther from the point where the stone hit the water? explain.

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)