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Q1. When blue light of wavelength 450 nm falls on a single slit, the first dark bands on either side of center are separated by 58.0 degrees. Determine the width of the slit.
Q2. A farsighted man uses eyeglasses with a refractive power of 2.05 diopters. Wearing the glasses 0.03 m from his eyes, he is able to read books held no closer than 0.26 m from his eyes. He would like a prescription for contact lenses to serve the similar purpose. What is the correct contact lens prescription, in diopters?
an electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate, What is the kinetic energy of the electron just as it reaches the positive plate
The resistance of the loop is 0.490 ohms. A magnetic field parallel to z-axis is given by B= 0.830 y^2 t, where B is in tesla, y in meters, and t in seconds. What is the size of the induced current in the loop at t = 0.470s .
Hakeem throws a 10.50 g ball straight down from a height of 2m. The ball strikes the floor at a speed of 7m/s. What was the initial speed of the ball? Presume that air resistance is negligible.
What is the energy range (in joules) of photons of wavelength 400nm to 760nm
An unmarked police car traveling a constant 95km/h is passed by a speeder traveling 145 km/h. exactly 2.5 s after the speeder passes, police officer steps on accelerator; if the police car's acceleration is 2.10m/s^2.
A ball is thrown directly upward with an initial velocity of 10 m/s. how long is the ball in the air
A 1.8-m-long glass tube that is closed at one end is weighted and lowered to the bottom of a freshwater lake. Determine the depth of the lake
question1a boat crosses a river of width 171 m in which the current has a uniform speed of 1.51 ms. the pilot maintains
An aircraft weighing 971 N is accelerated at 9.1 m/s/s for 5 seconds, at which time the aircraft launches. What is the force required to launch the aircraft
icyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass.
An 8.0-kg block is set moving with an initial speed of 6.0 m/s on a rough horizontal surface. how far does the block travel before it stops
A child suddenly runs into the street. If it takes the driver 0.80 s to react and apply the brakes, explain how many meters will the car have moved before it begins to slow down?
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