The acceleration of a ball as it rolls down a ramp is 4 m/s2 . The ball is referred to 2 s after it starts to roll. The acceleration in m/s2 after starting from rest is
a. 0.
b. 2.
c. 4.
d. 8.
e. 16.
c
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Maximum magnetic force occurs when electrons move
A) in the same direction as the magnetic field. B) opposite to the magnetic field direction. C) perpendicular to the magnetic field direction. D) at non-right angles to the magnetic field direction. E) none of the above
The first steps of evolution off the main sequence are the same for both medium-mass and high-mass stars
a. True b. False Indicate whether the statement is true or false
How large a force is necessary to stretch a 2.0-mm diameter copper wire (Y = 11 × 10^10 N/m2) by 1.0%?
a. 2.1 kN b. 3.5 kN c. 6.9 kN d. 11 kN e. 5.4 kN
A person with a longer near point can see an object as closely with the unaided eye as can a person with the shorter near point
Indicate whether the statement is true or false