The important similarity that Newton noticed between a falling apple and the moon was that
A) the net force on both is away from Earth, i.e., outward from the center of Earth.
B) both are good to eat.
C) the velocities of both are toward Earth's center.
D) both are moving.
E) the accelerations of both are toward Earth's center.
E
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Glycerin at 30 
has a density of 1,260 
and a viscosity of 0.630 Pa-s. The glycerin is poured through a funnel with a neck that is 10.0 cm long and 1.00 cm in diameter. If the level of glycerin is kept at a level 5.00 cm above the neck, then what is the flow rate of the glycerin through the funnel?
A. 
B. 
C. 
D. 
E. 
WIMPs are an example of baryonic matter
a. True b. False Indicate whether the statement is true or false
An unfueled 1 000-kg experimental rocket sled on level frictionless rails is loaded with 50 kg of propellant. It exhausts the propellant in a 20-s "burn.". If the rocket, initially at rest, moves at 160 m/s after the burn, what impulse is experienced by the rocket sled?
a. 1.1 × 10^5 kg·m/s b. 1.6 × 10^5 kg·m/s c. 1.5 × 10^5 kg·m/s d. 1.9 × 10^5 kg·m/s
What evidence do we have that Jupiter must have a substantial solid core under the thick clouds?
A) Its magnetic field must be form by rotating molten iron, like our own. B) Occasional breaks in the clouds reveal a solid surface at times. C) Jupiter's disk is more oblate than it should be, suggesting it has a higher density. D) Jupiter's disk is less oblate than it should be, if it were only hydrogen and helium. E) The Io flux tube goes straight down to Jupiter's iron core.