What is the process that physically transfers heat from a lower (hotter) to a higher (cooler) level?
A) radiation
B) translation
C) convection
D) reflection
E) conduction
C
You might also like to view...
If an object isn't moving, no external forces act on it
1.True 2.False
If the charge on a parallel plate capacitor doubles, which of the following also doubles?
A. the electric field between the plates B. the capacitance C. the dielectric constant D. the energy stored E. the permittivity
Two cars are traveling at the same speed and hit the brakes at the same time. Car A decelerates (decreases its velocity) at twice the rate of car B. If car B takes time T to stop, how long does it take car A to stop?
A) 4T B) 2T C) T D) T /2 E) T/4
A 1.2-kg mass is projected down a rough circular track (radius = 2.0 m) as shown. The speed of the mass at point A is 3.2 m/s, and at point B, it is 6.0 m/s. What is the change in mechanical energy done on the system between A and B by the force of friction?
a.
?8.9 J
b.
?7.3 J
c.
?8.1 J
d.
?6.6 J
e.
?24 J