A steel ball bearing of mass m1 and speed of magnitude v1 has a head-on elastic collision with a steel ball bearing of mass m2 at rest. Rank the speed v1 of m1 relative to v2, the magnitude of the speed of m2, after the collision when i) m1>m2; ii) m1 = m2; and iii) m1
A. v1v2; v1>v2
Answer: B
You might also like to view...
A 3 m diameter by 2 m high tank contains sulfuric acid at 100ºC. If the sides are sudden heated to 150ºC, determine the boundary layer thickness of the acid as it moves up the sides of the tank by natural convection. The properties of sulfuric acid are: ?p = 5.0 x 10^-3 K^-1, ? = 1.2 x 10^-6 m^2/s, and Pr = 1.5.
What will be an ideal response?
Torque: A force of 17 N is applied to the end of a 0.63-m long torque wrench at an angle 45° from a line joining the pivot point to the handle. What is the magnitude of the torque about the pivot point produced by this force?
A. 7.6 N ? m B. 10.7 N ? m C. 12.0 N ? m D. 9.7 N ? m
If the net force on a body is zero the net torque ________ (is always, is not necessarily, cannot be) zero.
Fill in the blank(s) with the appropriate word(s).
If the wavelength of a photon is doubled, what happens to its energy?
A) It is reduced to one-half of its original value. B) It stays the same. C) It is doubled. D) It is increased to four times its original value. E) It is reduced to one-fourth of its original value.