Physics, 19.02.2021 03:20 treytonmesser
1. Joni Johannson has a mass of 50 kilograms. She climbed 5 meters up the
stairs to fetch a pail of water. How much work against gravity did she do?
Work - Mass x Acceleration due to gravity x height.
Answers: 3
Physics, 22.06.2019 11:50
Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?
Answers: 2
Physics, 22.06.2019 13:00
The substances that are necessary for producing of certain hormones and that store and transport vitamins
Answers: 1
Physics, 22.06.2019 18:00
By what primary heat transfer mechanism does the sun warm the earth?
Answers: 1
Physics, 22.06.2019 21:40
Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.
Answers: 3
1. Joni Johannson has a mass of 50 kilograms. She climbed 5 meters up the
stairs to fetch a pail of...