Starting from rest, a car travels 1350 meters in 1.00 minute. It accelerated at 1.0 m/s2 until it reached its cruising speed. Then it drove the remaining distance at constant velocity. What was its cruising speed?
What will be an ideal response?
30 m/s
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All the following statements are true. Which one follows directly from Kepler's third law?
A) Venus is more massive than Mercury. B) Venus orbits the Sun at a slower average speed than Mercury. C) Venus is larger than Mercury. D) Venus has a thicker atmosphere than Mercury.
Slanting Surfaces Without Friction: A slanted roof rises at 35° above the horizontal, and the straight-line distance from the top of the roof to the bottom edge is 4.5 m. The roof is covered with ice, so it offers no friction to objects sliding on it. A piece of ice at the top suddenly breaks loose and begins to slide down from rest.(a) How long will it take for the ice to reach the bottom edge of the roof?(b) How fast will the ice be traveling just as it reaches the bottom edge?
What will be an ideal response?
At what distance from the central axis of a long straight thin wire carrying a current of 5.0
A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of about 5.0 × 10-5 T? (?0 = 4? × 10-7 T ? m/A) A) 1.0 cm B) 2.0 cm C) 3.0 cm D) 4.0 cm E) 5.0 cm
If you have one molecule of TiO2, how many molecules of O2 does it contain?
A) None, O2 is a different molecule than TiO2. B) One, TiO2 is a mixture of Ti and O2. C) Two, TiO2 is a mixture of Ti and 2 O. D) Three, TiO2 contains three molecules. E) none of the above