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How many lines are there in the Hydrogen emission spectrum? Why do the lines get closer together as you go bluer? Are there transitions of higher or lower energy that we don't see? How many total transitions are there for hydrogen?
A 41.2-kg boy, riding a 2.65-kg skateboard at a velocity of +5.07 m/s across alevel sidewalk, jumps forward to leap over a wall. Just afterleaving contact with the board, the boy's velocity relative to the side walk is 6.60 m/s, 9.63° above the ho..
An electrical motor can accelerate a ferris wheel whose moment of inertia is 20,000 kg-m^2 from rest to 10 rev/min in 12 sec. When the motor is turned off, the ferris wheel slows down from 10 to 8 rev/min in 10 sec due to frictional losses.
The side mirrors on cars are convex mirrors. If the side mirror on the driver side of your car has a focal length with a magnitude of 5.30 m, determine the image distance of the truck
How fast should a car move toward you for the car's horn to sound 2.88% higher in frequency than as the car is stationary? The speed of sound is 343 m/s.
Point charge +Q is placed close to a very large conducting plane. A professor of physics asserted that the field caused with this configuration is the same as would be obtained with removing the plane and placing a point charge -Q of equal magnitude ..
A long, straight wire carries a (conventional) current of I = 50.0 A, in the left- to-right direction. Sketch the FBD, and find the magnitude and direction of the magnetic field vector at a distance d = 1.0 m directly below the wire.
Suppose a ball player throws a ball at an angle of 55 degrees and a speed of 25 m/s. Next to the ball thrower, What is the distance the ball is thrown
When an AC source is connected across a 18.0 Ω resistor, the output voltage is given by deltaV = (130 V)sin(70PiT). Compute the peak current
A wooden block slides directly down an inclined plane, at a constant velocity of 6.0 m/s. How large is the coefficient of kinetic friction, if the plane makes an angle of 25 degrees with the horizontal?
An object is placed 5 cm in front of a spherical mirror. A virtual image is formed 10 cm behind the mirror. What is the magnification of the mirror
A small object with a mass of 333 mg carries a charge of 30.0 nC and is suspended by a thread between the vertical plates of the parallel-plate capacitor. The plates are separated by 2cm.
The determined Wile E. Coyote is out once more to try to capture the elusive road runner. The coyote wears a new pair of Acme power roller skates, which provide a constant horizontal acceleration of 15 m/s^2.
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