Physics, 03.07.2019 02:00 Dajabrooks492
A28 g bullet pierces a sand bag 29 cm thick. if the initial bullet velocity was 55 m/s and it emerged from the sandbag with 18 m/s. what is the magnitude of the friction force (assuming it to be constant) the bullet experienced while it traveled through the bag? ans 130 n (hint: use work energy theorem to calculate work done by frictional force, and use use the definition of work to find the force)
Answers: 1
Physics, 22.06.2019 00:40, camco301
Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ
Answers: 3
Physics, 22.06.2019 12:00, drivinghydra
Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?
Answers: 3
A28 g bullet pierces a sand bag 29 cm thick. if the initial bullet velocity was 55 m/s and it emerge...