The acceleration of a ball as it rolls down a ramp is 4 m/s2 . The ball is referred to 2 s after it starts to roll. The velocity acquired after starting from rest in m/s is
a. 0 d. 8
b. 2 e. 16
c. 4
D
Physics & Space Science
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An electron in a hydrogen atom is in the n = 7 shell. How many possible values of the orbital quantum number l could it have?
A) 6 B) 7 C) 15 D) 33 E) 98
Physics & Space Science
Stars that have ejected a planetary nebula eventually become
a. protostars. b. brown dwarfs. c. white dwarfs. d. red giants.
Physics & Space Science
Copernicus was the first person to suggest a Sun-centered solar system.
What will be an ideal response?
Physics & Space Science
A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.The resistance of the light bulb is 20 ohms
a. True b. False Indicate whether the statement is true or false
Physics & Space Science