A0.6 m diameter solid disk with mass 4.2 kg is rotating with a constant angular velocity of 8t rad/sec. a) what is the tangential speed of a point 15. on the rim? b) calculate the rotational kinetic energy of the wheel. rolling along a find the total kinetic energy of the wheel in the previous problem if the wheel is now horizontal surface at 16 m/s. 16.

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.

What is the most useful equation for electric power?

An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?