Free Fall: At the same moment, one rock is dropped and one is thrown downward with an initial velocity of 29 m/s from the top of a building that is 300 m tall. How much earlier does the thrown rock strike the ground? Neglect air resistance.
Fill in the blank(s) with the appropriate word(s).
2.4 s
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Valley networks are located in Mars's northern hemisphere
Indicate whether the statement is true or false
A ray in air is incident on a glass plate whose index of refraction is 1.42. The angle of refraction is one half the angle of reflection. The angle of refraction is closest to:
A) 45° B) 43° C) 41° D) 39° E) 37°
The figure shows a cross section of three parallel wires each carrying a current of 24 A. The currents in wires B and C are out of the paper, while that in wire A is into the paper. If the distance R = 5.0 mm, what is the magnitude of the force on a 4.0-m length of wire A?
a.
15 mN
b.
77 mN
c.
59 mN
d.
12 mN
e.
32 mN
Explain the appearance of the Sun's spectrum, as noted by Fraunhofer
What will be an ideal response?