I NEED HELP WITH MY PHYSIC HW S HELP PLEASE ASAP 1. A 1206 kg car accelerates at a rate of 1.7 m/s/s over a distance of 62 meters. How much work was done by the engine of the car?

2. How much work is required to lift a 2.3-Newton’s weigh from 8.6 meters to 36.3 meters above the surface of earth?

3. A 7.3 kg mass falls from rest and increase its speed to 3.2 m/s. How much work was done on the mass by gravity?

PLEASE HELP Thank you!

If you want to change the pitch of a sound, you have to change the

Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)

What are the three ways that an object can accelerate