If your automobile runs out of fuel while driving, the engine stops. You don't come to an abrupt stop because of
A) inertia.
B) gravity.
C) resistance.
D) the principle of continuation.
Answer: A
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The early Solvay Conferences had a great effect upon the development of quantum mechanics
a. True b. False Indicate whether the statement is true or false
Which diagram correctly shows the magnetic field lines created by a circular current loop in which current flows in the direction shown?
a.
b.
When two solid spheres of the same material and same radius r are in contact, the magnitude of the gravitational force each exerts on the other is directly proportional to
a. r. b. r2. c. r3. d. r4. e. r6.
From the energy that is input into an engine on each cycle, 500 kJ of mechanical work are produced and 600 kJ of heat are exhausted into the environment. What is the efficiency of the engine?
A) 45.5% B) 28.6% C) 90.0% D) 75.0% E) 83.3%