A baseball has a mass of 0.15 kg. If pitched at 40.0 m/s with a relative uncertainty of 1%, how uncertain is its position?
A. 9.1 x 10-34m
B. 5.7 x 10-34m
C. 1.8 x 10-34m
D. 6.3 x 10-33m
A. 9.1 x 10-34m
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A black hole is an object with escape velocity about half the speed of light.
Answer the following statement true (T) or false (F)
A wheel of diameter 0.70 m rolls without slipping. A point at the top of the wheel moves with a tangential speed 2.0 m/s
(a) At what speed is the axis of the wheel moving? (b) What is the angular speed of the wheel?
If the displacement of an object, x, is related to velocity, v, according to the relation x = Av, the constant, A, has the dimension of which of the following?
a. acceleration b. length c. time d. area
A magnetic field of 2.00 T is applied to a bubble chamber to make the tracks of protons and other charged particles identifiable by the radius of the circles they move in. If a high-energy proton moves along an arc of a 3.30-m circle, what is the momentum of the proton? [q = 1.60 × 10^?19 C, m = 1.67 × 10^?27 kg]