Friction: You push downward on a trunk at an angle 25° below the horizontal with a force of 750 N. If the trunk is on a flat surface and the coefficient of static friction between the surface and the trunk is 0.61, what is the most massive trunk you will be able to move?
A. 81 kg
B. 93 kg
C. 73 kg
D. 112 kg
Answer: A
You might also like to view...
Which kind of telescope is shown?
a. infrared b. radio c. optical d. ultraviolet
When we speak of the large-scale structure of the universe, we mean ________
A) the structure of any large galaxy B) the overall shape of the observable universe C) the overall arrangement of galaxies, clusters of galaxies, and superclusters in the universe D) the structure of any individual cluster of galaxies
A particle (q = 3.0 mC, m = 20 g) has a speed of 20 m/s when it enters a region where the electric field has a constant magnitude of 80 N/C and a direction which is the same as the velocity of the particle. What is the speed of the particle 3.0 s after it enters this region?
a. 68 m/s b. 44 m/s c. 56 m/s d. 80 m/s e. 36 m/s
There is a hollow, conducting, uncharged sphere with a negative charge inside the sphere. Consider the electrical potential at the inner and outer surfaces of the sphere. Which of the following is true?
a.
The potential on the inner surface is greater.
b.
The potential on the outer surface is greater.
c.
The potentials on both surfaces are zero.
d.
The potentials on both surfaces are equal but not zero.