A 150-N sled is pulled up a 28° slope at a constant speed by a force of 120 N. What is the coefficient of kinetic friction between sled and slope?
a. 0.53
c. 0.37
b. 0.22
d. 0.33
C
You might also like to view...
A hockey puck slides off the edge of a horizontal platform with an initial velocity of 20 m/s horizontally. The effects of air are negligible. The height of the platform above the ground is 2.0 m
What is the magnitude of the vertical component of the velocity of the puck just before it hits the ground? A) 20 m/s B) 6.3 m/s C) 13 m/s D) 15 m/s E) 21 m/s
The distance between two successive ‘like' points on a wave is the wave's wavelength
a. True b. False Indicate whether the statement is true or false
Velocity Selector: A singly-charged ion enters a velocity selector that has a 0.18-T magnetic field perpendicular to an electric field of 1.6 kV/m, with both fields perpendicular to the velocity of the ion. The same magnetic field is then used to deflect the ion into a circular path of radius 12.5 cm. (e = 1.60 × 10-19 C)(a) What velocity was selected by the velocity selector?(b) What was the mass of the ion?
What will be an ideal response?
Why is the main sequence main? Why are these stars so common?
What will be an ideal response?