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1) The mass of a bottom quark is 4.20Gev/c^2 and was found by colliding a beam of protons with a cloud of stationary protons.
a) What was the energy of the proton beam?
b) How fast were they moving?
(Hint: The problem is relativistic. Use the center of mass frame.) mp=938.2 Mev/c^2
2) During an experiment you determine the cat off wavelength of a cathod ray tube to be λ0. You repeat the experiment using light with a wavelength of 1/2 λ0.
What are the stopping voltage(potential) and electron velocity in terms of λ0 for second experiment?
3) What are the first 4 wavelength of hte following series for the hydrogen atom?
Lyman
Balmer
Paschen
estimate the speed of the car just before braking. how much time passes before the brick lands on the ground..
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, Find the speed of the wagon
compute the total energy radiated by the Sun each second.
A river has a steady speed of 0.490 m/s. A student swims upstream a distance of 1.00 km and swims back to the starting point, If the student can swim at a speed of 1.10 m/s in still water, how long does the trip take
How much current is contained within the width of a thin ring concentric with the wire if the ring has the radial width of 12.0 µm and is at a radial distance of 1.2 mm.
A 0.25L container is initially filled with air at STP. A piston compresses it adiabatically to a volume of 12.0% of the original volume. Calculate the final temperature and pressure
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Find out the sum of these four vector forces: 12N to the right at 35.0° above the horizontal, 31.0 N to the left at 51.5° above the horizontal, 7.45N to the left at 35.0° below the horizontal, and 24N to the right at 48.0° below the horizontal.
A 600-kg car is going over a curve with a radius of 120 m that is banked at an angle of 25 degrees with a speed of 30.0 m/s. What is the normal force exerted by the road on the car
a heat engine operates between a hih temp reservoir at 610K and low temp reservoir at 320K. find the net change in entropy as a result of this cycle
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