an 87 KG object travels at 22MS west it collides head-on with a second object traveling 12 MS east after the collision both objects at rest calculate the mass of a second obje

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.