A 475 gram ball is traveling horizontally at 12.0 m/s to the left when it is suddenly struck horizontally by a bat, causing it to reverse direction and initially travel at 8.50 m/s to the right
If the bat produced an average force of 1275 N on the ball, for how long (in ms) was it in contact with the ball?
7.64 ms
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Two forces of 4 N and 12 N act on a body simultaneously. The net force on the body is
a. 4 N b. 12 N c. 16 N d. 8 N e. impossible to tell from the given information
At what distance from a long straight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of Earth's magnetic field of about 5.0 × 10-5 T? (?0 = 4? × 10-7 T ? m/
A) A) 1.0 mm B) 1.0 cm C) 2.0 cm D) 3.0 cm E) 4.0 cm
The most common form of gas in the disk of the Milky Way galaxy is ________
A) atomic hydrogen gas B) gas in hot bubbles C) molecular hydrogen D) gas in stellar winds
How many time constants must elapse if an initially charged capacitor is to discharge 55% of its stored energy through a resistor?
a. 0.60 b. 0.46 c. 0.52 d. 0.40 e. 1.1