A 4.0-kg block slides down a 35° incline at a constant speed when a 16-N force is applied acting up and parallel to the incline. What is the coefficient of kinetic friction between the block and the surface of the incline?
A. 0.20
B. 0.23
C. 0.26
D. 0.33
E. 0.41
Answer: A
You might also like to view...
Which of the following gives direct information about the age of the solar system?
A) Martian meteorites B) meteorites from asteroidal debris C) the solar wind D) the oldest Martian basalts E) the oldest lunar basalts
A horizontal 2.00-m long, 5.00-kg uniform beam that lies along the east-west direction is acted on by two forces. At the east end of the beam, a 200-N forces pushes downward. At the west end of the beam, a 200-N force pushed upward
What is the angular acceleration of the beam? A) 240 rad/s2 north B) 1.33 × 102 rad/s2 north C) zero D) 240 rad/s2 south E) 1.33 × 102 rad/s2 south
A plastic cube is immersed in water having an index of refraction of 1.33. A laser beam in the plastic strikes the interface at an angle of 14.5° with the normal in the plastic. In the water, this beam makes an angle of 21.8° with the normal
What is the speed of light in the plastic cube? (c = 3.0 × 108 m/s)
Standing waves can result from _____ waves
a. longitudinal b. transverse c. both longitudinal and transverse d. neither longitudinal nor transverse