If electricity costs 7.06¢/kW?h, how much would it cost you to run a 120W stereo system 4 hours per day for 4 weeks
A) $0.14 B) $0.95 C) $2.66 D) $1.62
B
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A bag of groceries that has a mass of 10 kilograms weighs about
A) 1 N. B) 10 N. C) 100 N. D) 1000 N. E) greater than 1000 N.
Two similar objects are thrown simultaneously from the top of a building with the same speed. One is thrown vertically downward, and the other at an angle. Both objects reach the ground at the same time
Indicate whether the statement is true or false
A point charge of 6.0 nC is placed at the center of a hollow spherical conductor (inner radius = 1.0 cm, outer radius = 2.0 cm) which has a net charge of -4.0 nC. Determine the resulting charge density on the inner surface of the conducting sphere
a. +4.8 mC/m2 b. -4.8 mC/m2 c. -9.5 mC/m2 d. +9.5 mC/m2 e. -8.0 mC/m2
Consider a situation where two moving objects collide and rebound from each other. Kinetic energy
a. is definitely conserved b. is definitely not conserved c. may or may not be conserved, depending on the nature of the collision d. none of the above