For small angle approximations
a. the angle must be 10° or less
b. the angle must be 10 radians or less
c. the angle must be 1° or less
d. the angle must be 1 radian or less
e. the angle must be 45° or less
a
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A delivery truck and a car collide. Which vehicle experiences the greater acceleration?
A. the car B. the truck C. Both the car and the truck experience the same acceleration. D. We need to know the speed of the truck and the car to find the answer. E. We need to know the mass of the truck and the car to find the answer.
A hydraulic jack is used to lift objects such as automobiles. If the input force is 200 N over a distance of 1 meter, the output force over a distance of 0.1 meter is ideally
A) 200 N. B) 500 N. C) 1000 N. D) 2000 N. E) none of the above
A small sphere with a mass of 441 g is moving upward along the vertical +y-axis when it encounters an electric field of 5.00 N/C
If, due to this field, the sphere suddenly acquires a horizontal acceleration of 13.0 m/s2 , what is the charge that it carries? A) 1.15 C B) -1.15 C C) 1150 C D) -1150 C
The magnetic field at a distance of 2 cm from a long straight current-carrying wire is 4 ?T. What is the magnetic field at a distance of 4 cm from this wire?
A) 6 ?T B) 2 ?T C) 4 ?T D) 10 ?T E) 8 ?T