A pair of helium nuclei fused together produces
A) helium isotope.
B) lithium.
C) beryllium.
D) carbon.
E) iron.
Answer: C
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When water vapor changes phase to become water in a cloud, the surroundings become
A) cooler. B) warmer. C) both of these D) neither of these
An image is 4.0 mm in front of a converging lens with focal length of magnitude 5.0 mm. Where is the object for this image?
A) 2.2 mm in front of the lens B) 9.0 mm behind the lens C) 2.2 mm behind the lens D) 20 mm in front of the lens
Two point charges are on the x-axis. One charge, 
is located at the origin, and the other charge, 
is located at x = 9.00 m. What is the force on 
?
A. 20.0 nN in the positive x-direction B. 20.0 pN in the positive x-direction C. 20.0 nN in the negative x-direction D. 20.0 pN in the negative x-direction E. 180 nN in the positive x-direction
Index of Refraction: Red light with a wavelength of 650 nm travels from air into a liquid with an index of 1.33. What are the frequency and wavelength of the light in the liquid? (c = 3.0 × 108 m/s)
What will be an ideal response?