A 10-A current flows through a wire for 2.0 min. (e = 1.60 × 10-19 C) (a) How much charge has passed through this wire? (b) How many electrons have passed any point in the wire?
What will be an ideal response?
(a) 1200 C (b) 7.5 × 1021
Physics & Space Science
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A cylinder with its mass concentrated toward the center has a moment of inertia of 0.2MR2 . If this cylinder is rolling without slipping along a level surface with a linear speed v, what is the ratio of its rotational kinetic energy to its linear kinetic energy?
a. 1/l0 b. 1/5 c. 1/2 d. 1/1
Physics & Space Science
The Permian is a(n)
a. epoch. b. era. c. eon. d. period.
Physics & Space Science
Which of the following polymers cannot be joined by fusion welding?
(a) PE (b) PVC (c) Epoxy (d) PTFE
Physics & Space Science
Newton's Second Law in 1 Dimension: What magnitude net force is required to accelerate a 1200-kg car uniformly from 0 m/s to 27.0 m/s in 10.0 s?
A. 444 N B. 1620 N C. 3240 N D. 4360 N E. 11,800 N
Physics & Space Science