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In a simple of the hydrogen atom, the electron revolves in a circular orbit around the proton with a speed of 1.1 x 106 m/s. Determine the radius of the electron's orbit.
An object of mass 5kg is moving with an momentum of 50 kg m/s. What is the speed of the object? What is the magnitude of the momentum of the object
A clean copper surface is exposed to light of wavelength 275 nm. What is the maximum speed of the photoelectrons emitted from this surface? Use the table below copper=4.7eV.
White light illuminates an oil film on water. Viewing it directly from above, it looks red. What is the refractive index of the oil
A running house cat has 13.5 J of kinetic energy at speed "v". What would her kinetic energy be if she ran half as fast as the speed in part A
A 92 kg man standing on a surface of negligible friction shoves a 73 g stone lying at his feet, giving it a velocity of 4.0 m/s. What velocity does the man acquire as a result.
A 245 turn coil has an area of 3.3 cm2 and rotates in a magnetic field of 0.5 T. What frequency will generate a maximum emf of 10 V
A small plastic ball of mass 9.44 × 10-3 kg and charge +0.181C is suspended from an insulating thread and hangs between the plates of a capacitor, What is the magnitude of the charge on each plate
An archeological specimen containing 3.4g of carbon has an activity of 0.33 Bq. How old (in years) is the specimen
A car driving directly north on the freeway at a speed of 110 km/h and a truck is leaving the freeway driving 85 km/h in a direction 35 west of north
A man is pulling his box that has a mass of 22 kg. What is the work done on the luggage by the lady, What is the power exerted on the box by the man
Sheena pulls a sled along a snowy path on level ground with a maple syrup barrel, 26 kg, on the sled. find the tension between the barrel and Sheena's hand.
q1. a swimming pool has dimensions 50.0 m multiplied by 15.0 m and a flat bottom. when the pool is filled to a depth of
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