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The sun radiates energy at a rate of 3.86 ? 1026 W. Its radius is 7.0 ? 108 m. If the distance from the Earth to the sun is 1.5 ? 1011 m, what is the intensity of solar radiation at the top of the Earth's atmosphere?
A 2000 Hz sound wave passes through a wall with two narrow openings 30 cm apart. If sound travels on average 345 m/s, What is the angle of the first order maximum
An RLC circuit consists of a 100 omh resistor, a 20 micro Coulomb capacitor, and a 400mH inductor connected in series with a 120V, What is the reactant of the circuit
A concave makeup mirror is designed so that a person 22 cm in front of it sees an upright image magnified by a factor of two. What is the radius of curvature of the mirror
An air duct in a building has a radius of 8 cm and a length of 17 m. What pressure is required to push air through the duct at a flow rate of 1.1 m3/s
First-order Bragg diffraction is observed at 23.0 degrees relative to the crystal surface, with spacing between atoms of 0.26nm, At what angle will second order be observed
Establish an average acceleration
question1a curve of radius 160 m is banked at an angle of 11deg. an 808-kg car negotiates the curve at 88 kmh without
A swift blow with the hand can break a pine board. As the hand hits the board, the kinetic energy of the hand is transformed into elastic potential energy of the bending board; if the board bends far enough, it breaks. what is the average force on..
A 6.0-kg object oscillates on a spring with a force constant of 160 N/m. The damping coefficient is 0.20 kg/s. If the driving frequency is varied, at what frequency will resonance occur
A thermos contains 141 cm3 of coffee at 92.9 °C. To cool the coffee, you drop two 10.4-g ice cubes into the thermos. What is the final temperature of the coffee
A uniformly dense 50 cm rod with a total mass of 0.2 kg is standing perfectly vertically on a horizontal surface. What is the magnitude of the angular acceleration of the rod
Find out the net force exerted on the fluid inside the box by summing momentum flow rates out through each of four sides of the box.
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