Physics, 25.10.2019 21:43, PAADUUUgma
Someone drops a 50 − g pebble off of a docked cruise ship, 70.0 m from the water line. a person on a dock 3.0 m from the water line holds out a net to catch the pebble. (a) how much work is done on the pebble by gravity during the drop? (b) what is the change in the gravitational potential energy during the drop? if the gravitational potential energy is zero at the water line, what is the gravitational potential energy (c) when the pebble is dropped? (d) when it reaches the net? what if the gravitational potential energy was 30.0 joules at water level? (e) find the answers to the same questions in (c) and (d).
Answers: 3
Physics, 22.06.2019 10:00, lorelei7668
(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present
Answers: 3
Physics, 22.06.2019 16:40, odalysesquermon
The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?
Answers: 1
Someone drops a 50 − g pebble off of a docked cruise ship, 70.0 m from the water line. a person on a...