What results when the net force on an object increases?
a. Increased acceleration, but there is no way of calculating the increase.
b. Decreased acceleration, but there is no way of calculating the decrease.
c. Decreased acceleration, if the force and the velocity are in opposite directions.
d. Proportionally increased acceleration.
e. No change in the object's motion.
d
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The stratosphere and the troposphere account for ______________ of the mass of the atmosphere
a. 80% b. 90% c. 99.9% d. 78.1%
A goldfish bowl is spherical, 8 cm in radius. A goldfish is swimming 3.0 cm from the wall of the bowl. Where does the fish appear to be to an observer outside? The index of refraction of water is 1.33
Neglect the effect of the glass wall of the bowl. A) 3.3 cm inside the bowl B) 3.9 cm inside the bowl C) 3.6 cm inside the bowl D) 3.0 cm inside the bowl E) 1.7 cm inside the bowl
If a proton with mass 1.67 × 10^-27 kg moves in an accelerator such that its total energy is two times its rest energy, what is its speed? (c = 3.00 × 10^8 m/s)
a. 1.00 × 10^8 m/s c. 1.41 × 10^8 m/s b. 2.83 × 10^8 m/s d. 2.60 × 10^8 m/s
During loading in a stress-strain test of a material, we observe that the plot is not linear and has no discontinuities. We can assume that:
(a) The material is nonlinear elastic. (b) The material is anelastic. (c) There is elastic and plastic strain. (d) None of the above can be assumed.