A 95-N force exerted at the end of a 0.32-m long torque wrench produces a torque of 15 N ? m. What is the angle (less than 90°) between the wrench handle and the direction of the applied force?
A) 30°
B) 24°
C) 36°
D) 42°
A
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A mass hangs from a spring that is fixed to the ceiling. The mass is now pulled down and released so the mass oscillates up and down. Which of the following statements is true?
A. The gravitational force on the mass oscillates at the same frequency as the mass B. The kinetic energy of the oscillating mass is a constant C. Adding mass to the spring will make it oscillate faster D. The restoring force of the spring is equal to the weight of the mass E. None of these choices are true
A silicon monoxide thin film (n = 1.45) of thickness 77.6 nm is applied to a camera lens made of glass (n = 1.55). This will result in a destructive interference for reflected light of what wavelength?
a. 720 nm b. 558 nm c. 450 nm d. 522 nm
Based on your study of the Interactive Figure, which of the following is not one of the four major features of the solar system?
You run directly towards a plane mirror at 5 m/s. How fast do you approach your image?
A) 0 m/s B) 5 m/s C) 7 m/s D) 10 m/s E) 2 m/s