Physics, 23.03.2020 17:09 naiomireyes74p2aybs
A horse whose mass is M gallops at constant speed v up a long hill whose vertical height is h, taking an amount of time t to reach the top. The horse's hooves do not slip on the rocky ground, so the work done by the force of the ground on the hooves is zero (no displacement of the force). When the horse started running, its temperature rose quickly to a point at which from then on, heat transferred from the horse to the air keeps the horse's temperature constant.(b) Next consider the Universe as the system of interest. Write out the Energy Principle for this system. Remember that terms on the left hand side should include all energy changes for the system, while the terms on the right hand side shold relate to the surroundings. Which of the following terms are equal to 0?4
?Ugrav
?Echemical
?K
Q
?(mc2)
?Ethermal, air
?Ethermal, horse
W
.
Which of the following terms should go on the system (left) side?
5
?Echemical
?Ethermal, air
?Ugrav
.
Which of the following terms should go on the surroundings (right) side?
+mgh
-mgh
0
.
Answers: 2
Physics, 22.06.2019 15:50, micahsocool23
The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.
Answers: 2
A horse whose mass is M gallops at constant speed v up a long hill whose vertical height is h, takin...
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