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Consider a bright star in our night sky. Suppose that its power output is 6.00 X1028 W, about 150 times that of the Sun, and that its distance is 24.0 ly.
a) Discover the intensity of the starlight at the Earth.
b) Discover the power of the starlight that the Earth intercepts.
Three point charges are placed on the x-axis. A share of 3.33 micro C is at the origin. What is the force of the charge at the origin
a uniform steel bar with weight of 98 N and length of 3.0 m is suspended on each end by a rope. A 50.0 kg mass hangs 50.0 cm from the left end of the bar. How much weight does each rope support
The catapult on an aircraft carrier can take an aircraft from 0 to 85.6 m/s in 12.4 seconds, What is the acceleration of the aircraft when it launches
Matthew holds a 50 lbs dumbbell in his hand with his elbow flexed at 90 degrees. His forearm is parallel with the ground. What is the torque created by the dumbbell about the elbow joint
You are driving home from school steadily at 95 km/h for 130 km. Itthen beins to rain and you slow to 65 km/h. how far is your hometown from school
Consider a particle of mass m moving freely in a two dimensional rectangular box with impenetrable walls. The dimensions of the box are ax and ay. Derive the wavefunction for the particle
A long, straight wire runs along the axis of the solenoid, carrying a current of 15. Find out the magnitude of the net magnetic field a radial distance of 0.80 from the straight wire.
High-intensity desk lamps are rated at 30 W but require only 13 V. They contain a transformer that converts 125 V household voltage. What is the current in the secondary when the lamp is on?
A constant volume gas thermometer is used to measure the melting point of lead. The ratio of the measured pressure at this temperature to that at the triple point of water is 2.1982. What is the melting temperature of lead in Kelvin.
A physics professor requires reading glasses with +2.00 D power toread a book held 40.0 cm away with a relaxed eye. Assume theglasses are 2.00 cm in front of his eyes.
question if a particle of mass 5.4 kg is moving east at 10 ms and a particle of mass 19 kg is moving west at 10 ms what
If the create has a mass of 110 and is 1.60 tall and 0.80 in depth and width, what is the minimum force needed to make the crate start tipping? (Assume the center of mass of the crate is at its center and static friction great enough to prevent sl..
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