Buoyancy: A 200-N object floats with three-fourths of its volume beneath the surface of the water. What is the buoyant force on the object? The density of water is 1000 kg/m3.
A. 50 N
B. 150 N
C. 200 N
D. 267 N
E. It cannot be determined because we do not know the volume of the object.
Answer: C
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A cat runs along a straight line (the x-axis) from point A to point B to point C, as shown in the figure
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A single slit, 1400 nm wide, forms a diffraction pattern when illuminated by monochromatic light of 490-nm wavelength
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A solenoid with 400 turns has a radius of 0.040 m and is 40 cm long. If this solenoid carries a current of 12 A, what is the magnitude of the magnetic field at the center of the solenoid?
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