Physics, 22.05.2020 02:08 martinbricein10
Frank stands still while throwing a dart toward a target with a speed of 25 m/s.
What is the speed of the dart observed by Frank compared to the speed observed by a stationary observer?
The speed is 25 m/s for both people.
The speed is greater than 25 m/s for Frank only.
The speed is greater than 25 m/s for the observer only.
The speed is less than 25 m/s for both people.
Answers: 3
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The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?
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Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?
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Which of the following will cause an induced current in a coil of wire? the constant field of the earth passing through the coil a magnet resting near the coil a magnet being moved into or out of the coil a wire carrying a constant current near the coil
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Frank stands still while throwing a dart toward a target with a speed of 25 m/s.
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