When a sine wave is used to represent a sound wave, the crest corresponds to
a. rarefaction.
b. condensation.
c. point where molecules vibrate at a right angle to the direction of wave travel.
d. region of low elasticity.
b
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How would a compass needle align itself in the magnetic field shown in this figure?
a. It would align itself along the magnetic field lines circling the wire, with the north pole of the compass pointing clockwise. b. It would align itself along the magnetic field lines circling the wire, with the north pole of the compass pointing counterclockwise. c. The compass needle aligns perpendicular to the magnetic field with its north pole pointing directly at the wire. d. The compass needle aligns perpendicular to the magnetic field with its north pole pointing directly away from the wire. e. The direction the compass tends to point is up out of the page, but it cannot rotate that way, and it therefore does not respond to the magnetic field.
The specific heat of ice is 2.100 kJ/kg ?C, the heat of fusion for ice at 0 src="https://sciemce.com/media/4/b9ad0217031f6f632.png" class="w-image" />?
is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg 
the heat of vaporization of water at 100.0
is 2,256 kJ/kg, and the specific heat of steam is 2.020 kJ/kg 
What is the final equilibrium temperature when 20.00 grams of ice at -15.0
is mixed with 5.000 grams of steam at 120.0
A. 59.92
B. 56.03
C. 52.76
D. 49.34
E. 45.67
What explanation does general relativity provide for gravity?
A) Gravity is the result of curved spacetime. B) Gravity is directly proportional to the mass of the attracting body. C) Gravity is inversely proportion to the radius of the body. D) Gravity is the opposite of the electromagnetic force. E) Gravity can affect only massive particles, not massless photons.
Light of wavelength 519 nm passes through two slits. In the interference pattern on a screen 4.6 m away, adjacent bright fringes are separated by 5.2 mm in the general vicinity of the center of the pattern
What is the separation of the two slits?