In a reflecting telescope, the objective is a mirror
Indicate whether the statement is true or false
T
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At what orientation angle relative to the magnetic field direction does the torque of a magnetic dipole have its largest value?
a) 0° b) 45° c) 90° d) 135° e) 180°
Why is the tropical year shorter than the sidereal year?
What will be an ideal response?
Rainbows exist because light in water drops is
1) reflected. 2) refracted. 3) both of these And the main reason drops disperse different colors involves light's different 4) frequencies. 5) speeds. 6) directions. 7) energies.
A 4.00 kg ball is moving at 4.0 m/s to the right and a 6.00 kg ball is moving at 3.00 m/s to the left. The total momentum of the system is
A. 16 kg m/s to the right. B. 2.0 kg m/s to the right. C. 2.0 kg m/s to the left. D. 18 kg m/s to the left. E. 34 kg m/s to the left.