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Suppose you're building a scale model of the hydrogen atom, and the nucleus is represented by a ball of radius 3.2 cm (about the radius of a baseball). How many miles away (1 mi = 1.61 Ã- 105 cm) should the electron be placed?
a typical hard drive in a computer spins at 5400rpm. what is the period in seconds
A copper rod 20 cm long having a cross-sectional area of 7.0 cm2 is used to connect a boiler maintained at 100 oC to a large block of ice at 0 oC. What is the rate of change in entropy of the boiler
Two metal plates are held together by two steel rivets, each of diameter 0.24cm and length 1.2cm.How much force has to be applied parallel to the plates to shear off both rivets.
A surface is infinitesimally close to and surrounds a dipole. The electric flux during the surface must be zero, since the net charge it surrounds is zero. How is it possible for the dipole to have an electric field and be consistent with Gauss' t..
Light at two different wavelengths, 750nm and 450nm, is shone through the same single slit at the same time. Determine the slit's width
A 5cm radius sphere is filled with a uniform volume charge with charge density 2.3\times10-6C/m3, Calculate the electric flux out of the surface of the cube
Three light bulbs each with a resistance of 50W, are connected in series to a 100 V power supply, find the current flowing through the third light bulb
A ray of light is incident on the surface of a block of clear ice at an angle of 35.0 degrees with the normal. Find the angle between the reflected and refracted angle
A shoe store uses small floor-level mirrors to let customers view prospective purchases. At what angle from vertical must such a mirror be inclined so that a person standing 59 from the mirror with eyes 142 off the floor can see her feet.
a mass M is hanging from two strings. There is a tension of 34 N in the string on the left and a tension of 24 N in the string on the right. How heavy is the object
After falling from rest from a height of 26 m, a 0.5 kg ball rebounds upward, reaching a height of 16 m. If the contact between ball and ground lasted 1.6 ms, Evaluate average force was exerted on the ball?
A 2-meter long prism with square cross-section of side 0.1m is made of stainless steel with a thermal conductivity k=14.9W/m degrees C. Determine the temperature distribution inside the prism
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