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A cosmic ray travels 60km through the earth's atmosphere in 450us , as measured by experimenters on the ground.
How long does the journey take according to the cosmic ray?
the earth completes a circular orbit around the sun in one year. what is the speed of the earth around the sun
q1. a 3.3 block of wood sits on a table. a 3.0 bullet fired horizontally at a speed of 480 goes completely through the
6.00g of nitrogen gas at 22.0 degree celsius and an initial pressure of 4.00atm undergo an isobaric expansion until the volume has tripled, What amount of heat energy is transferred from the gas as its pressure decreases
q1. the driver of a 1700 car travelling on a horizontal road at 140 suddenly applies brakes. due to the slippery
What is he wavelength of a 22.75*10^9 Hz radar signal. What is the frequency of an X-ray with wavelength 0.12nm
A raft is made out of 10 logs that are 56cm in diameter and are 6.1m long. How many people (68kg each) can stand on the raft with out getting there feet wet
Oil with index of refracton n=1.25 floats on water with index n=1.33. For normal incidence, what maximum film thickness will reflect red light of wavelength 650nm most strongly
A narrow flat coil wound on a square frame has 120 turns and sides of 21.5 cm. What is the maximum torque that can be exerted by the field on the coil
It's possible to use the ideal-gas law to show that the density of the earth's atmosphere decreases exponentially with height, What is the weight of a column of air
A 1442 kg car is traveling south, and a 2028 kg van is traveling west. what is the speed of each vehicle
a box of mass m1kg slides 20sqrt2m down an incline plane of angle pi4 and kinetic friction is 12.what are the
A ball with a mass of 0.65 kg is dropped on a table. The initial height of the ball is 0.85 meters. Calculate the change in the momentum of the ball during its collision with the table
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