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A point source of light is 112 cm below the surface of a body ofwater. Find the diameter of the circle at the surface throughwhich light emerges from the water. Water has an index ofrefraction of 1.33.
At a particular instant a proton is traveling in the -y direction, with speed 4105 m/s. What is the magnitude of the magnetic force on the proton
A heart defibrillator is charged to 350V. It is connected to a patients chest and allowed to discharge through the heart. how much charge resides on the capacitor?
A nichrome toaster wire, initially at room temperature, carries 2.72A immediately after it's turned on. After the wire heats, the current drops to 2.44A
A uniform 3.0-m plank weighing 150 N is suspended by vertical ropes at either end. determine the tension in the rope holding the left end of the plank
An ideal Voltmeter is connected across the terminals of a 12 Volt battery and a light bulb with R = 4.5 ohms is also connected across the battery terminals, Find the power generated by the Emf of the battery
The scale of a spring balance reading from zero to 180 N is7.00 cm long. A fish suspended from thebalance is observed to oscillate vertically at 2.50 Hz. What is the mass of the fish? Neglect themass of the spring.
Suppose you could pack neutrons (mass = 1.67 × 10-27 kg) inside a small ball of radius 0.033 m in the same way as neutrons and protons are packed together in the nucleus of an atom. Approximately how many neutrons would fit inside the ball
Using Newton's Version of Kepler's Third Law II Part A Pluto's moon Charon orbits Pluto every 6.4 days with a semimajor axis of 19,700 kilometers. Calculate the combined mass of Pluto and Charon. Express your answer using two significant figures. ..
Singly ionized (one electron removed) atoms are accelerated and then passed through a velocity selector consisting of perpendicular electric and magnetic fields. How fast are the ions moving when they emerge from the velocity selector
A photon is emitted when a hydrogen atom undergoes a transition from the n = 9 state to the n = 4 state. Calculate the energy of the emitted photon
FM station KCOM transmits simultaneously, at a frequency of 99.9 MHz, from two broadcast towers placed precisely 31.5 m apart along a north-south line. What is the wavelength of KCOM's transmissions
A target glider, whose mass m2 is 340 g, is at rest on an air track, a distance d = 53 cm from the end of the track. How long does the target glider take to reach the end of the track
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