Physics, 13.11.2020 18:30 loraine4664
A student observes two birds fly past with the same speeds. She concludes that they have the same kinetic energy. What is wrong with her conclusion?
A.
The birds might be at different heights.
B.
The birds might be flying in different directions.
C.
The birds might have different masses.
D.
The birds might have different chemical potential energies.
Answers: 3
Physics, 22.06.2019 09:30, gobbler80
On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s. t.p.?
Answers: 2
Physics, 22.06.2019 15:00, depinedainstcom
What property of an object determines its inertia?
Answers: 2
Physics, 23.06.2019 01:30, aliciabenitez
Amerry-go-round of radius r, shown in the figure, is rotating at constant angular speed. the friction in its bearings is so small that it can be ignored. a sandbag of mass m is dropped onto the merry-go-round, at a position designated by r. the sandbag does not slip or roll upon contact with the merry-go-round. how would you rank the following different combinations of m and r on the basis of the angular speed of the merry-go-round after the sandbag "sticks" to the merry-go-round from largest to smallest. a) m = 10kg, r = 0.25r b) m = 20kg, r = 0.25r c) m = 10kg, r = 0.50r d) m = 10kg, r = 1.0r e) m = 15kg, r = 0.75r f) m = 40kg, r = 0.25r
Answers: 1
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