A bobsled has a mass of 1.357 x 10² kg. A constant force is exerted on it for 5.42 s. The sled's initial velocity is zero and its final velocity is 8.73 m/s, east.
a) What is its change in momentum?
b) What is the net force exerted on it?

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.

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig

Which additional product balances the reaction h2so4 + 2naoh → na2so4 + 2h2o 2oh h2o2 h3o