A mirror with a focal length 100 cm has a 4.0 cm object placed 20 cm in front of it. What is the height of the image?
A)
-3.2 cm
B)
3.2 cm
C)
5.0 cm
D)
-5.0 cm
E)
4.0 cm
C
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A top of rotational inertia 4.0 kg m2 receives a torque of 2.4 Nm from a physics professor. The angular acceleration of the body will be
A. 6.0 rev/s2. B. 0.6 rad/s2. C. 1.2 rev/s2. D. 1.0 rad/s2. E. 6.0 rad/s2.
Kepler's third law relates the square of the planet's orbital period in years to the cube of its average distance from the Sun in astronomical units
Indicate whether the statement is true or false
What is one thing that all monomers of addition polymers have in common?
A) The monomer has to have at least one double bond. B) The monomer has to have at least two functional groups (though they can be the same). C) The monomer has to have at least two functional groups (though they must be the different). D) The monomer has to be very small. E) The monomer has to have a number of polymer components.
A 2.00-kg object moves with constant velocity 3.00 m/s toward the east. Two forces act on the object. The first is a 40.0 N force toward the west. What is the second force that acts on the object?
A) 23.0 N east B) 40.0 N east C) 26.7 N east D) 46.0 N east E) 46.0 N west