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Nonreflective coatings on camera lenses reduce the loss of light at the surfaces of multilens systems and prevent internal reflections that might mar the image. Find the minimum thickness of a layer of magnesium fluoride (n = 1.38) on flint glass (n = 1.66) that will cause destructive interference of reflected light of wavelength 569 nm near the middle of the visible spectrum.
A balloon with a radius of 14.00cm and an electric charge of 3.75 × 10-9 C is brought within the electric field of the larger balloon so their centres are 40cm apart. Establish the magnitude of the electric force exerted by this electric field on ..
Find the shear strain that results if a force of magnitude 8×10^5 is applied to the top square face of the plate, parallel to the side, and a force of equal magnitude is applied in the opposite direction to bottom face of the plate.
The maximum induced emf in a generator rotating at 249 rpm is 44 V. How fast must the rotor of the generator rotate
A certain star is 9.80 light-years away. What is the distance traveled according to observers on the spacecraft
A particle of mass 0.350 kg is attached to the 100-cm mark of a meterstick of mass 0.200 kg. Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 50.0-cm mark
a spherical void of radius r has cut inside the sphere, find the electric field inside the void if its center is displaced by vector R
The relative angle of the knee changes from 5 degrees to 85 degrees during the knee flexion phase of a squat exercise. What is the total angular distance covered during 5 squats
A pole-vaulter is nearly motionless as he clears the bar, set 4.2m;m above the ground. He then falls onto a thick pad. The top of the pad is 80 cm{rm cm} above the ground, and it compresses by 50cm;cm as he comes to rest
Conclude a rough "scale factor" or "plate scale." Measure the distances in mm or cm between each of the marked wavelengths and average the results.
A horizontal spring-mass system oscillates on a frictionless table. If the ratio of the mass to the spring constant is 0.062 kg*m/N, find the maximum extension of the spring
A planet of mass 6 × 1024 kg is at location ‹ -3 × 1011, 8 × 1011, 0 › m. A star of mass 9 × 1030 kg is at location ‹ 7 × 1011, -5 × 1011, 0 › m. What is the force exerted on the planet by the star? (It will probably be helpful to draw a diagr..
What is the new frequency of the string that was tightened. find the magnitude of the net force acting on the car during this time.
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