The intrinsic brightness of a star is referred to as its
A) radiance
B) luminosity
C) surface temperature
D) apparent brightness
B
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Gale Crater is the site of exploration for which Mars rover?
A) Spirit B) Opportunity C) Curiosity D) Sojourner
Consider the circuit below. Switch S is closed at t = 0
What is the voltage across the capacitor C just after the switch is closed?
A buoy, used to mark a harbor channel, consists of a weighted rod 2.00 m in length. 1.50 m of the rod is immersed in water and 0.500 m extends above the surface
If sunlight is incident on the water with an angle of incidence of 40.0°, what is the length of the shadow of the buoy on the level bottom of the harbor?
A block of mass m is projected across a horizontal surface with an initial speed v. It slides until it stops due to the friction force between the block and the surface. The surface is now tilted at 20° and the block is projected up the surface with the same initial speed, v. Assume that the friction force remains the same as when the block was sliding on the horizontal surface. When the block
comes to rest momentarily, how does its total mechanical energy compare to the case where the block slid horizontally comes to rest? 1.It is the same. 2.It is less in the case where the block went up the slope. 3.It is more in the case where the block went up the slope. 4.We cannot tell from the information given.