Aboy is exerting a force of 70 n at a 50-degree angle on a lawn mower. he is accelerating at 1.8 m/s2. round the answers to the nearest whole number. what is the mass of the lawn mower? kg what is the normal force exerted on the lawn mower?

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.

Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. in a typical strike, the chameleon's tongue accelerates at a remarkable 220 m/s2 for 20 ms, then travels at constant speed for another 30 ms.

What structural formula represents 4 electrons shared between two atoms?