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A magnifying glass of diameter 10.5 cm focuses sunlight into a spot of diameter 0.550 cm. The energy flux in the sunlight incident on the lens is 0.120 W/cm^2 What is the energy flux in the local spot? Assume that all point in the spot receive the same flix.
Two cars collide at an intersection. Car , with a mass of 1900 kg , is going from west to east, while car B , of mass 1300 kg , is going from north to south at 16.0 m/s. How fast were the enmeshed cars moving just after the collision
How far does the object compress the spring if same experiment is performed on the moon, where g = 1.63 m/s2 and air resistance is neglected.
In a certain binary-star system, each star has the a mass of 1.00 multiply.gif 10^30 kg, What is their period of revolution in Earth years
An electron with a speed of 6.00*10^6 m/s collides with an atom The collision excites the atom from its ground state (0eV( to a state with an energy of 3.70 eV. What is the speed of the electron after the collision?
a 1.000 meter long rod (measured when stationary) is moving at 0.8 c. How long would the rod appear to a stationary observer
Determine the maximum magnetic flux through an inductor connected to a standard outlet (?Vrms = 120 V, f = 60.0 Hz)
A metal wire of mass m slides without friction on two horizontal rails spaced a distance d apart.the track lies in a vertical uniform magnetic field B. A constant current i flows from generator G along one rail across the wire and back down the other..
A proton is projected perpendicularly into a magnetic field that has a magnitude of 0.29 T. What is the magnitude of the field used for the electron
Two uniform infinite sheets of electric charge densities 48.0 C/m2, Find the magnitude of the electric field everywhere
A racquetball strikes a wall with a speed of 30 \rm m/s and rebounds with a speed of 26 \rm m/s. What is the average acceleration of the ball
write down the equations expressing conservation of momentum for the components in the x and y directions separately.
A train is travelling up a 4.5 degree incline at a speed of 3.25 m/s when the last car breaks free and begins to coast without friction. a) How long does it take for the last car to come to rest momentarily? b) How far did the last car travel befo..
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