You carry a 7.0 kg bag of groceries 1.2 m above the level floor at a constant velocity of 75 cm/s across a room that is 2.3 m room. How much work do you do on the bag in the process?
A) 0.0 J
B) 82 J
C) 158 J
D) 134 J
A
Physics & Space Science
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The atmosphere of ____________________ contains acid compounds including sulfuric and hydrochloric acid
Fill in the blank(s) with correct word
Physics & Space Science
Marie & Pierre Curie
A) discovered radioactivity. B) proposed the plum-pudding model. C) proposed the tiny central nucleus idea. D) observed back-scattering from nuclei. E) discovered radium and polonium.
Physics & Space Science
What is the change in entropy when 1 kg of ice melts at 0°C is (in J/K)? (LF,ice = 333 J/g.)
a. 335. b. 603. c. 1220. d. 1310. e. 2160.
Physics & Space Science
A superconducting solenoid is to be designed to generate a magnetic field of 2.50 T. If the solenoid winding has 1000 turns/m, what is the required current? (µ0 = 4p × 10^-7 T×m/A)
a. 5000 A c. 3980 A b. 1990 A d. 1000 A
Physics & Space Science