Melting snow tends to
A) warm the surrounding air.
B) cool the surrounding air.
C) neither of these
Answer: B
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The position of a 0.64-kg mass undergoing simple harmonic motion is given by x = (0.120 m) cos (pt/16). What is the maximum net force on the mass as it oscillates?
a. 0.98 × 10^-3 N c. 3.0 × 10^-3 N b. 7.4 × 10^-3 N d. 4.7 N
Based on our current theory of Earth's formation, the water we drink comes from
A) ice that condensed in the solar nebula in the region where Earth formed.
B) chemical reactions that occurred in Earth's crust after Earth formed.
C) chemical reactions that occurred in Earth's core after Earth formed.
D) material left behind during the giant impact that formed the Moon.
E) comets that impacted Earth.
A constant force of 15 N in the negative y direction acts on a particle as it moves from the origin to the point (3i+3j-1k)m. How much work is done by the given force during this displacement?
What will be an ideal response?
An object approaches the bottom of a ramp, point A. It goes up the ramp and turns around at point B, which is 40.0 m above A. The ramp makes an angle of 30.0° with the horizontal
What is the speed of the object at point A? Neglect friction and use g = 10.0 m/s2. A) 23.8 m/s B) 28.3 m/s C) 10.0 m/s D) 11.6 m/s E) 15.3 m/s