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Question1
Drop solid sphere of aluminium into a bucket of water sitting on ground. The buoyant force equals weight of water displaced that is less than the weight of the sphere, so it sinks to the bottom. If you take a bucket with you on an elevator that accelerates upward, the apparent weight of the water increases and buoyant force on the sphere increases, too. Can acceleration of the elevator be great enough to make a sphere pop up out of the bucket of water? Give details!
Question2
The vitreous humor, a transparent, gelatinous fluid that fills most of the eyeball, has an index of refraction of 1.34. Visible light ranges in wavelength from 380 nm (violet) to 750 nm (red), as measured in air. This light travels throughout teh vitreous humor and stikes the rods and comnes at the surface of the retina. What are ranges of (a) wavelength, (b) frequency, and (c) speed of light just as it approaches the retina within the vitreous humor?
A 1.0 µF capacitor is connected in parallel with a 2.4 µF capacitor, What is the equivalent capacitance of this combination
A bowling ball (mass= 7.2 kg, radius= 0.14m) and a billiard ball (mass= .44 kg, radius= .028m) may each be treated as uniform spheres. find the magnitude of the maximum gravitational force
600 nm light is shined on a single slit which is 0.1mm wide, What is the width of the central maximum
Santa loses his footing and slides down a frictionless, snowy roof that is tilted at an angle of 30.0â. what is his speed as he leaves the roof
A box slides across a frictionless floor with an initial speed v = 3.4 m/s. It encounters a rough region where the coefficient of friction is µk = 0.5. with what speed does the box leave the strip
A steel wire with mass 29.7 g and length 1.52 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m. Compute the linear density of the string
Two rockets approach earth from opposite directions at equal speeds relatie to the earth, How fast are the rockets going with respect to earth
There are two protons of a helium atom seperated by 1.00e-15m, If the protons were allowed to move, what would be their initial acceleration due to the electric force between them
Determine the force of gravity between earth (mass =6.0x10^24kg) and the moon (mass= 7.4x10^22kg). The average earth-moon distance is 3.8x10^8m.
A dynamite blast at a quarry launches a rock straight upward, and later it is rising at a rate of 15m/s. Assuming air resistance has no effect on the rock, calculate the total time the rock is in the air.
A source delivers an AC voltage of the form ?v = 92.2 sin (60?t), Find the rms voltage of the source
A solid disk of radius R and mass 2.66 kg is spinning at angular velocity 66.2 rpm about a vertical axis. What is the mass of the second disk
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