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A spaceship heads away from earth at 0.20C. The ship beams 400 nm light towards Earth. The light strikes a mirror on Earth and is reflected back to the ship.
Obtain the wavelength of light received by the ship?
A computer monitor uses 2.0 Amp of current when it is plugged into a 120 V outlet. The monitor is never turned off. Find the yearly cost of operating the monitor if the cost of electricity is $0.12/kWh
An initially motionless test car is accelerated uniformly to 1.20 × 102 km/h in 8.68 seconds before striking a simulated deer. The car is in contact with the faux fawn for 0.455 seconds, after which the car is measured to be traveling at 65.5 km/h..
The truck slows down uniformly with an acceleration of 5.60 m/s2 for 4.20 s, making skid marks 62.40 m long that end at the tree. With what speed does truck then strike the tree.
q. a solid nonconducting sphere of radius r has a positive charge q distributed uniformly throughout its volume. since
A 50.0 g copper calorimeter contains 260 g of water at 22.0°C. How much steam ought to be condensed into the water if the final temperature of system is to reach 42.0°C.
The force of the wind on the sails of a sailboat is 410 N north. The water exerts a force of 240 N east. If the boat (including crew) has a mass of 330 kg, illustrate what are the magnitude and direction of its acceleration?
A dead battery is charged by connecting it to the live battery of another car with jumper cables. Determine the current in the dead battery
Curious about the resistance of an audio speaker, Luke Klaus Lee measures the resistance of a speaker which is labeled as having a6 Ω impedance. The voltmeter’s lowest scale is 200Ω and only gives one digit. What is the range of frequencies involved?
A 1663.22 lbs. go-cart and driver rounds a curve. If the centripetal force on the go-cart and driver is 1000 lbs. What is the radius of the curve
A ford focus has a wheelbase of 274cm. Upon weighing, it is found that the front wheels have a weight of 7000 N, What is the weight of the vehicle
The intensity of the sound wave from a jet airplane is 9.1 W/m2 at a distance of 130 m. At what rate does the jet airplane radiate energy in the form of sound waves
Two narrow slits 3 mm apart are illuminated with light from a sodium lamp (lamda = 589 nm), What is the thickness of this glass
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