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THe Voyager one has a 20-W radio transmitter and is expected to transmit to 2025 when it is 25 billion km from the earth. WHat's the Diameter of a dish antenna that will recieve 10^-20 W of power from Voyager at this time?
What is relative velocity
One particle has a mass of 4.41 x 10-3 kg and a charge of +6.92 ?C. A second particle has a mass of 6.52 x 10-3 kg and the same charge. The two particles are initially held in place and then released.
The magnitude of each force is 271 N, the force on the right is applied at an angle 20? and the mass of the block is 13 kg. what is the magnitude of the resulting acceleration
A rider on a 16 m diameter Ferris Wheel is initially at traveling at 10 m/s. The Ferris Wheel slows to rest over two complete revolutions. How long does it take for the ferris wheel to stop
A train 400m long is moving on a straight track with a speed of 84.30km/h. The engineer applies the brakes at the crossing and later the last car passes crossing with the speed of 17.7 km/h. suppose constant acceleration; conclude how long the tra..
What additional force is necessary to hold the nozzle stationary after the water flow is turned on if the discharge rate is 0.550 kg/s with a speed of 26.5 m/s
A bullet is fired vertically into a 1.3kg block of wood at rest directly above it. If the bullet has a mass of 29g and a speed of 470m/s, how high will the block rise after bullet becomes embedded in it.
A solenoid of length 3.06 cm and diameter 0.663 cm is wound with 170 turns per cm. what is the magnetic flux through one of the windings of the solenoid
An engine has an efficiency e1. The engine takes input heat QH from a hot reservoir and delivers work W1. The heat rejected by this engine is used as input heat for a second engine.
What is the angular frequency in rev/s of combination.
The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base.
When a large star becomes a supernova, its core may be compressed so tightly that it becomes a neutron star, what is the speed of a particle (in km/s) on the star's equator
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