The angular speed of the hour hand of a clock, in rad/min, is
A.
.B.
.C.
.D.
E.
Answer: C
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A(n) ____________________ telescope has an objective that is a lens
Fill in the blank(s) with correct word
A 1.2-kg mass is projected down a rough circular track (radius = 2.0 m) as shown. The speed of the mass at point A is 3.2 m/s, and at point B, it is 6.0 m/s. What is the change in mechanical energy done on the system between A and B by the force of friction?
a.
?8.9 J
b.
?7.3 J
c.
?8.1 J
d.
?6.6 J
e.
?24 J
A satellite is in a circular orbit 600 km above the Earth's surface. The acceleration of gravity is 8.21 m/s2 at this altitude. The radius of the Earth is 6400 km. Determine the speed of the satellite, and the time to complete one orbit around the Earth
Which of the following are the jovian planets?
a) Jupiter, Saturn, Uranus, Neptune b) Earth, Mars, Jupiter, Saturn c) Uranus, Neptune, and Pluto d) Mercury, Jupiter, and Saturn e) Mercury, Venus, Earth, Mars