Graphical Analysis: The figure shows a graph of the velocity of an object as a function of time. What is the displacement of the object from 0 s to 8.0 s?

A. 20 m
B. 40 m
C. 60 m
D. 80 m
E. 100 m


Answer: C

Physics & Space Science

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The mathematical model of quantum mechanics was principally founded by

a. Max Planck. b. Albert Einstein. c. Neils Bohr. d. Erwin Schrödinger. e. Werner Heisenberg.

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A rock attached to a string swings in a vertical circle. Which free-body diagram could correctly describe the force(s) on the rock when it is at the highest point, where

image is the normal force, image is weight, and image is tension?
 
a.
image

b.
image

c.
image

d.
image
 
e.
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A Carnot engine operates between a high temperature reservoir at 435 K and a river with water at 280 K. If it absorbs 3700 J of heat each cycle, how much work per cycle does it perform?

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Physics & Space Science