A non-uniform rod of length L and mass M is pivoted about one end. The moment of inertia of this rod about its pivoted end is 1ML2/4 . Attached to the rod is a mass 3M at its midpoint and at the end opposite the pivot is another mass 2M. What is the moment of inertia of this configuration about the pivot?
a. 3ML2
b. 2ML2
c. 4ML2
d. 5ML2
e. None of the above answers is correct.
a
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Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.You drop the box. As it falls to its original level, its kinetic energy is __________
Fill in the blank(s) with correct word
In Figure OQ23.10, assume the charged objects are fixed. Notice that there is no sight line from the location of q2 to the location of q1. If you were at q1, you would be unable to see q2 because it is behind q3. How would you calculate the electric force exerted on the object with charge q1?
A rectangular loop of wire measures 1.0 m by 1.0 cm. If a 7.0-A current flows through the wire, what is the magnitude of the magnetic force on the centermost 1.0-cm segment of the 1.0-m side of the loop? (?0 = 4? × 10-7 T ? m/A)
A) 9.8 × 10-6 N B) 7.8 × 10-7 N C) 9.8 × 10-8 N D) 4.9 × 10-6 N
Which of the following statements about neutrinos is not true?
A) About a thousand trillion neutrinos are passing through your body every second. B) Neutrinos are created as a by-product of the proton-proton chain. C) Neutrinos have no electrical charge. D) Neutrinos have a tendency to pass through just about anything without interactions, making them very difficult to detect. E) The mass of a neutrino is 30 percent of the mass of an electron.