The natural tendency of an object to remain at rest or in motion with a constant velocity is called
a. an external force.
b. an unbalanced force.
c. inertia.
d. none of these.
c
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You have available a galvanometer that gives a full-scale deflection for a 333-?A current and has a coil resistance of 33 ?
(a) What shunt resistance is needed to convert this galvanometer to a 5.0-A ammeter? (b) What series resistance is needed to convert this galvanometer to a 5.0-V voltmeter?
An asteroid revolves around the Sun with a perihelion 0.5 AU and an aphelion of 7.5 AU. What is its period of revolution?
a. 4 years b. 8 years c. 16 years d. 32 years e. 64 years
An electron is fired through a pair of deflection plates, which produce a 2.00 cm long region with an electric field of 4000 N/C perpendicular to the electron's initial velocity. If the initial speed of the electron is 
what angle will its new velocity make with the direction of the original velocity?
A. 14
B. 8.0
C. 5.5
D. 4.6
D. 4.6
Three moles of an ideal gas with a molar heat capacity at constant volume of 4.9 cal/(mol?K) and a molar heat capacity at constant pressure of 6.9 cal/(mol?K) starts at 300 K and is heated at constant pressure to 320 K,
then cooled at constant volume to its original temperature. How much heat flows into the gas during this two-step process? A) 710 cal B) -720 cal C) 0 cal D) 120 cal E) -120 cal