A physical pendulum is composed of a disc whose center of gravity is attached to a thin rod. The disc has a moment of inertia of 1?2 MR2. The mass of the disc is 1.00 kg and has a radius of 40 cm. The length of the rod is 50.0 cm. The period of the physical pendulum is
A. 2.22 sec.
B. 2.03 sec.
C. 1.89 sec.
D. 1.63 sec.
E. 1.32 sec.
D. 1.63 sec.
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What is the equivalent capacitance of the combination shown?
a.
20 ?F
b.
90 ?F
c.
22 ?F
d.
4.6 ?F
e.
67 ?F
Which force is strongest beyond an atomic nucleus?
A) strong B) weak C) electromagnetic D) gravity E) They are all equal.
From shortest to longest wavelength, which of the following correctly orders the different categories of electromagnetic radiation?
A) gamma rays, x-rays, ultraviolet, visible light, infrared, radio B) infrared, visible light, ultraviolet, x-rays, gamma rays, radio C) radio, infrared, visible light, ultraviolet, x-rays, gamma rays D) gamma rays, x-rays, visible light, ultraviolet, infrared, radio
Work-Energy Theorem: The graph in the figure shows the magnitude of the net horizontal force Fx on a 25-kg package as a function of the position x of the package. Just before the force was applied, the package was originally sliding at 6.0 m/s in the +x direction on a smooth horizontal floor. Find the x component of the velocity of the package just after the force has stopped in each of the following cases.(a) The force is applied in the same direction as the original velocity of the box.(b) The force is applied in the opposite direction to the original velocity of the box.
What will be an ideal response?