Parallax is the shift in a star's apparent position due to Earth's motion around the Sun.
Answer the following statement true (T) or false (F)
True
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If you see Polaris directly overhead, you must be very close to
A) the equator. B) the South Pole. C) the Tropic of Cancer. D) the North Pole.
What is the value of pi?
A rectangular loop (area = 0.15 m2) turns in a uniform magnetic field with B = 0.20 T. At an instant when the angle between the magnetic field and the normal to the plane of the loop is (?/2) rad and increasing at the rate of 0.60 rad/s, what is the magnitude of the emf induced in the loop?
a. 24 mV b. zero c. 18 mV d. 20 mV e. 6.0 mV
A 0.140-kg baseball is dropped and reaches a speed of 1.20 m/s just before it hits the ground. It rebounds with a speed of 1.00 m/s. What is the change of the ball's momentum?
A) 0.0280 kg?m/s upwards B) 0.0280 kg?m/s downwards C) 0.308 kg?m/s upwards D) 0.308 kg?m/s downwards E) 0 kg?m/s