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A film of MgF2 (n = 1.38) having thickness 1.68 10-5 cm is used to coat a camera lens.
(a) What are the three longest wavelengths that are intensified in the reflected light?
Three point charges, -5.2 x 10-9 C, -8.1 x 10-9 C, and +7.7 x 10-9 C, are fixed at different positions on a circle. The total electric potential at the center of the circle is -2300 V
A particle's velocity is described by the function vx= t^2? 9t+4m/s, where t is in s. How many turning points does the particle reach
One electron collides elastically with a second electron initially at rest. After the collision, the radii of their trajectories are 1.50 cm and 2.90 cm, Determine the energy (in keV) of the incident electron
A low-power laser used in a physics lab might have a power of 0.40 mW and a beam diameter of 2.6 mm. Calculate the average light intensity of the laser beam
You notice you are running low on gas in your 1200kg car, and you are hoping you have enough gas to reach the bottom of the hill. what will your speed be at the bottom of the hill
A particle moves with constant acceleration a. The expression v1+at represents the particle's velocity at what instant in time.
A 87 gram piece of metal is heated to 98°C and placed into 200mL of water insulated at 20°C. If the equilibrium temperature is 26.64, find the heat gained by the water
The water in a atank is at a gauge pressure of 190,000 Pa. what is the force on the bottom of the tank
Two small spheres spaced 20centimetres apart have equal charge. How many excess electrons should be present on each sphere if magnitude of the force of repulsion between them is newtons.
What is the (a) magnitude and (b) angle (measured relative to the positive direction of the x axis) of the asteroid's acceleration.
Suppose we are given a square coil that is 5.5 cm on a side containing 100 loops of very fine wire. The total resistance of this coil is 2.0 ? 10?3 ?. Find the magnitude of the peak value of the induced current flowing in this coil under these cond..
A simple pendulum has a mass of 0.150 kg and a length of 3.00 m. It is displaced by an angle of 12.0° and then released. What is the utmost speed?What is the maximum angular acceleration?What is the maximum restoring force.
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