Aball thrown vertically upward reaches a maximum height of 30. meters above the surface of earth. at its maximum height, the speed of the ball is
a. 0.0 m/s
b. 3.1 m/s
c. 9.8 m/s
d. 24 m/s

You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.

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.

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?