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A classic observation of refraction occurs when a pencil is placed in a glass half filled with water. Do this and observe the shape of the pencil when you look at the pencil sideways, that is, through air, glass, water. Explain your observations. Draw ray diagrams for the situation.
At the time t = 0, the child throws a coconut upward (suppose the coconut is directly below the monkey) at a speed v0. Find the time taken for the monkey to reach the coconut
At t = 0 a very small object with mass 0.440mg and charge +9.00 ?C is traveling at 125 m/s through the origin in the -x-direction. How far is the particle from the origin at t=7.00 ms
The average speed of the atoms in a 1.6 g sample of helium gas is 651 m/s. Estimate the thermal energy of the sample
Half-life of C^14 is 5730 yr. Find its decay constant. If we have 4.8X10^14 atoms of C^14, after 10000yr. How many of them will be left
At the Indianapolis 500, you can measure the speed of carsjust by listening to the difference in pitch of the engine noisebetween approaching and receding cars. How fast is it going
A uniform disk has a mass of 4.6 kg and a radius of 0.2 m. The disk is mounted on frictionless bearings and is used as a turntable. What is the final angular momentum of the system
An electric dipole consists of charges +2e and -2e separated by 0.78nm. It is in an electric field of strength 3.4 x 106 N/C. Calculate the magnitude of the torque on the dipole
the reason that massive neutrinos were considered as a candidate for solving the missing mass problem is that at the
A 1.65 block is attached to a spring with spring constant 17. While the block is sitting at rest, a student hits it with the hammer and almost instantaneously gives it a speed of 59.
question1the starter motor of a car engine draws a current of 126 a from the battery. the copper wire to the motor is 6
An AC generator supplies an rms voltage of 115 V at 60.0 Hz. It is connected in series with a 0.350 H inductor, a 3.10 ?F capacitor and a 256 ? resistor. What is the peak voltage across the inductor
a diver springs upward with an initial speed of 2.65 ms from a 3.0-m board.a find the velocity with which he strikes
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