A dense, hot body will give off a(n) ________ spectrum
Fill in the blank(s) with correct word
continuous
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The _______________ supposes that planets form in the rotating disks of gas and dust around young stars
Fill in the blank(s) with correct word
A 2.00 kg-ball has zero kinetic and potential energy. Ernie drops the ball into a 10.0-m deep well. Just before the ball hits the bottom, the sum of its kinetic and potential energy is:
a. zero. c. -196 J. b. 196 J. d. 392 J.
Two slits are illuminated with green light (l = 540 nm). The slits are 0.05 mm apart and the distance to the screen is 1.5 m. At what distance (in mm) from the central maximum on the screen is the average intensity 50% of the intensity of the central maximum?
a. 1 b. 3 c. 2 d. 4 e. 0.4
Consider a situation where two moving objects collide and rebound from each other. Kinetic energy
a. is definitely conserved b. is definitely not conserved c. may or may not be conserved, depending on the nature of the collision d. none of the above