A box is dropped onto a conveyor belt moving at 2 m/s. If the coefficient of friction between the box and the belt is 0.3, how long before the box moves without slipping?

What will be an ideal response?


0.7 s

Physics & Space Science

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Escape Speed: The value of g at the surface of spherical Asteroid X is 0.00600 m/s2, and the escape speed is 9.95 m/s. What is the radius of this asteroid? (G = 6.67 × 10-11 N ? m2/kg2)

A. 8250 m B. 16,000 m C. 1600 m D. 800 m E. 400 m

Physics & Space Science

Vision Problems: Nearsightedness is usually corrected with

A. converging lenses. B. diverging lenses. C. convex mirrors. D. cylindrical lenses. E. concave mirrors.

Physics & Space Science

A particle moving along the x axis has a position given by x = 54t? 2.0t3 m. At the time t = 3.0 s, the speed of the particle is zero. Which statement is correct?

A. The particle remains at rest after t = 3.0 s. B. The particle no longer accelerates after t = 3.0 s. C. The particle can be found at positions x< 0 m only when t< 0 s. D. All of the above are correct. E. None of the above is correct.

Physics & Space Science

How many protons, neutrons, and nucleons are there in a carbon-14 nucleus?

What will be an ideal response?

Physics & Space Science