Physics, 07.07.2020 20:01 finesser16
A 17.5-kg block is dragged over a rough, horizontal surface by a 75-N force acting at 21° above the horizontal. The block is displaced 5.7 m, and the coefficient of kinetic friction is 0.150.
Requried:
a. Find the work done on the block by the 75-N force.
b. Find the work done on the block by the normal force.
c. Find the work done on the block by the gravitational force.
d. What is the increase in internal energy of the block-surface system due to friction?
e. Find the total change in the block's kinetic energy.
Answers: 3
Physics, 21.06.2019 19:30, Esmer1030
Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?
Answers: 3
Physics, 22.06.2019 05:00, anondriap
Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.
Answers: 1
Physics, 22.06.2019 15:30, salehabajwa101
What are the similarities & differences between a thermistor and a light dependent resistor in physics?
Answers: 1
Physics, 23.06.2019 20:30, mmm5398
If 2 different solids have the same masses but different volumes, how will their densities compare? a. the solids will have the same densities. b. the solid with lower volume will have a higher density. c. the solid with greater volume will have a higher density. d. the solid with greater volume will have double the density of the solid with the lower volume.
Answers: 1
A 17.5-kg block is dragged over a rough, horizontal surface by a 75-N force acting at 21° above the...
Geography, 07.01.2020 04:31
Mathematics, 07.01.2020 04:31
English, 07.01.2020 04:31
Mathematics, 07.01.2020 04:31
Mathematics, 07.01.2020 04:31