which of the following statements correctly describes the energy changes for this situation?
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Physics, 04.11.2019 03:31 olejlund8073
which of the following statements correctly describes the energy changes for this situation?
a.) energy transferred into the system of copper particles leads to an increase in the average ke and potential energy of the copper
particles.
b.) decrease in the average ke and potential energy of the copper particles leads to energy transferred out from the system of copper
particles.
c.) energy transferred into the system of copper particles leads to an increase in the average ke and decrease in potential energy of
the copper particles.
d.) decrease in the average ke and increase in potential energy of the copper particles leads to energy transferred out from the system of copper particles
Answers: 2
Physics, 22.06.2019 20:20, NNopeNNopeNNope
The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 − t2)k (iv) r (t) = 2t j + (50 − t2)k (v) r (t) = (50 − 2t) i + 2t j + (50 − t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?
Answers: 2
Physics, 22.06.2019 21:00, brittneys55
What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%
Answers: 1
Mathematics, 11.02.2021 05:00
Mathematics, 11.02.2021 05:00
Mathematics, 11.02.2021 05:00
Mathematics, 11.02.2021 05:00
Mathematics, 11.02.2021 05:00