A 10 pound iron ball and a 2 pound iron ball are dropped simultaneously from a height of 100 meters. Neglecting air resistance, which ball will reach the ground first?
A. They will reach the ground at the same time
B. The 10 lb ball
C. The 2 lb ball
Answer: A
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Two ropes are spliced together as shown.
A short time after the incident pulse shown in the diagram reaches the splice, the rope's appearance will be that in
A.
B.
C.
D.
E.
Inductive reactance XL is given by
A.
B.
C.
.D.
E.
Power: A battery supplies 6.0 mA to a 12-? resistor for 1.5 h. How much electric energy does this resistor dissipate in this time?
Fill in the blank(s) with the appropriate word(s).
A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 24 m/s west, and the acceleration of the car has components of 2.4 m/s2 east and 1.8 m/s2 south. What is the radius of the circle?
A. 0.24 km B. 0.19 km C. 0.32 km D. 0.14 km E. 0.27 km