A speedy tortoise can run with a velocity of 10.0 cm/s and a hare can run 20.0 times as fast. In a race, they both start at the same time, but the hare stops to rest for 2.00 minutes. The tortoise wins by a shell (20.0 cm). What was the length of the race?
What will be an ideal response?
12.6 m
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Which is a unique characteristic of Venus not shared by the other Terrestrial planets? a. The planet has an atmosphere
b. The planet has volcanoes on its surface. c. The planet experiences retrograde rotation. d. The planet has a strong magnetic field. e. The planet once had water on its surface.
The electric potential at two points in space is: V1 = 200 volts and V2 = 300 volts. Which of the following statements is true for moving a point charge q from point 1 to 2?
A. The work done by an external agent to move q from point 1 to 2 is positive. B. We can't determine the work done because we don't know the direction of V at the two points. C. The work done by the electric force exerted on q in moving it from point 1 to 2 is W = –q(100 V).
1.A 2.B 3.C 4.A and B 5.A and C 6.B and C 7.A, B, and C 8.None of the aboveA ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of gravity is 9.8 m/s2 . The ball is referred to at the two second time. The velocity is __________
Fill in the blank(s) with correct word
A 0.30-m-radius automobile tire rotates how many rad after starting from rest and accelerating at a constant 2.0 rad/s2 over a 5.0-s interval?
a. 12.5 rad b. 25 rad c. 2.0 rad d. 0.50 rad