A gamma ray is another name for a(n) __________
Fill in the blank(s) with correct word
photon
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The conversion of the initial potential energy of a person on a sled on a smooth icy slope into kinetic energy at the bottom is an example of the principle of conservation of ________.
What will be an ideal response?
The diagrams below show forces of magnitude F applied to an equilateral triangular block of uniform thickness. In which diagram(s) is(are) the block in equilibrium?
a.
A
b.
B
c.
C
d.
D
e.
A and B
Observations indicate that the Moon has water ice in craters near the poles. Where do scientists suspect this water came from?
A) ice brought by comet impacts long ago B) ice supplied to the Moon by impacts that occurred within the past century or so C) the ice formed from the condensation of water released by outgassing on the Moon D) The Moon has significant amounts of water bonded in its crust, so some of this water fills the polar craters.
Jane plans to fly from Binghampton, New York, to Springfield, Massachusetts, about 280 km due east of Binghampton. She heads due east at 280 km/h for one hour but finds herself at Keene, which is 294 km from Binghampton in a direction 17.8 degrees north of due east. What was the wind velocity?
a. 14 km/h, E b. 14 km/h, W c. 14 km/h, N d. 90 km/h, S e. 90 km/h, N