A wheel accelerates from rest to at a uniform rate of 58 rad/s2. Through what angle (in radians) did the wheel turn while accelerating?

A) 30 rad
B) 24 rad
C) 60 rad
D) 38 rad


A

Physics & Space Science

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For all irreversible processes involving a system and its environment:

A. the entropy of the system does not change B. the entropy of the system increases C. the total entropy of the system and its environment does not change D. the total entropy of the system and its environment increases E. none of the above

Physics & Space Science

A lens of focal length 20 cm has an object of height 3.0 cm placed 100 cm in front of it. The image formed is

A) upright and smaller than the object. B) inverted and smaller than the object. C) inverted and larger than the object. D) upright and larger than the object. E) upright and the same size as the object.

Physics & Space Science

A 3.00-kg copper rod is 45.0 cm long at 24.8°C. If 45 000 J are transferred to the rod by heat, what is its change in length? ccopper = 387 J/kg/°C and ?copper = 17.0 × 10^?6/°C

a. 34.4 cm b. 0.0297 cm c. 0.133 cm d. 0.0445 cm e. More information is needed.

Physics & Space Science

Free Fall: A ball is thrown upward at a velocity of 19.6 m/s. What is its velocity after 3.0 s, assuming negligible air resistance?

A. 9.8 m/s upward B. 9.8 m/s downward C. 0 m/s D. 19.6 m/s downward

Physics & Space Science