Venus has about 4/5 the mass of the Earth and has an orbital radius around the Sun
Question:
Venus has about 4/5 the mass of the Earth and has an orbital radius around the Sun about 5/7 of Earth’s. Which gives the relationship of the gravitational attraction between Venus and the Sun (FV) to that between the Earth and the Sun (FE)?
FV = FE |
FV < FE |
Cannot be determined without the Sun's mass |
FV > FE |
You and a friend each carry a 15kg suitcase up two flights of stairs walking at a constant speed. Take each suitcase to be a system. Suppose you carry the suitcase up the stairs in 30s while your friend takes 60s. Which of the following is true?
Both of you did equal work but you expended less power |
Your friend did more work but expended less power |
You did more work and also expended more power |
You did more work, but both of you expended same power |
Both of you did equal work but you expended more power |
An acceleration vector a has magnitude 8.0 m/s2 and has an angle of 54 degrees above the positive x axis. What are this vector’s x and y components? Drawing a diagram may help.
ax = 4.7 m/s2 ; ay = 6.5 m/s2 |
ax = 6.5 m/s2 ; ay = 4.7 m/s2 |
ax = 4.7 m/s2 ; ay = -6.5 m/s2 |
ax = -4.7 m/s2 ; ay = 6.5 m/s2 |
Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073212227
8th Edition
Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell