A batter applies an average force of 8000 N to a baseball for 1.10 ms. What is the magnitude of the impulse delivered to the baseball?
What will be an ideal response?
8.80 Ns
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What is the size of an object located at a distance of 1,000 meters and that has angular size A = 4 degrees?
A. about 4,000 meters B. about 11 meters C. about 35 meters D. about 70 meters
Which contributes more to the cost of your electric bill each month, a 1500-Watt hair dryer or a 600-Watt microwave oven?
a) hair dryer b) microwave oven c) both contribute equally d) depends upon what you cook in the oven e) depends upon how long each one is on
Two long parallel wires 40 cm apart are carrying currents of 10 A and 30 A in the same direction. What is the magnitude of the magnetic field halfway between the wires?
a. 4.0 × 10^–5 T c. 3.0 × 10^–5 T b. 1.0 × 10^–5 T d. 2.0 × 10^–5 T
Projectile Motion: A pilot drops a package from a plane flying horizontally at a constant speed. Neglecting air resistance, when the package hits the ground the horizontal location of the plane will
A. be behind the package. B. be directly over the package. C. be in front of the package. D. depend on the speed of the plane when the package was released.