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Find the post-collision velocities of the two objects (objects 1 and 2) in the figure. The collision coefficient is e = 0.6.
Light requires 4.5 years to travel from the nearest star to earth. If we could travel there in a spaceship going 90% of the speed of light, the trip would require 5.0 years according to clocks on earth. How much time would pass for the passengers ..
Two carts with masses of 10.60 kg and 2.50 kg, respectively, move in opposite directions on a frictionless horizontal track with speeds of 6.70 m/s and 3.50 m/s, in that order. The carts stick together after colliding head-on. Find the final speed of..
A freight train has a mass of 1.8 x 107 kg. If the train can exert a constant pull of 7.8 x 105N, find how long does it take to increase the speed of the train
The activity of a freshly prepared radioactive sample is 1010 disintegrations per second, whose mean life is 109 s. find the mass (in mg) of the radioactive sample
A car traveling at 115 km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.75m. What was the magnitude of the average acceleration of the driver
The asymptotic wavelength (λ limit) for the Brackett series is 1500 nm. Determine the wavelength of the first emission line
A mouse of mass m jumps on the outside edge of a freely turning ceiling fan of rotational inertia I and radius R. By what ratio does the angular velocity change
a photon absorbed by an electron will give up more energy to the electron if the photona is moving slower.b has a
A model of a helicopter rotor has four blades, each 3.60 m in length from the central shaft to the bladetip. What is the radial acceleration of the blade tipexpressed as a multiple of the acceleration due to gravity,g?
Two point charges are on the y axis. A 5.20-µC charge is located at y = 1.25 cm, and a -2-µC charge is located at y = ?1.80 cm. Find the total electric potential at the origin
Two speakers, one directly behind the other, are each generating a 374-Hz sound wave. What is the smallest parting distance between the speakers that will generate destructive interference at a listener standing in front of them? Take the speed of so..
A narrow vertical single slit (in air) is illuminated by IR from a He-Ne laser at 1152.2 nm, and it is found that the center of the first dard band lies at an angle of 4.2 deg off the central axis. Determine the width of the slit.
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