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Solve the given question:
Question: A box the mass 52kg is pushed up an incline that has a total length of 7.0m and is tilted 21 degrees away from the horizontal. Assume that the coefficient of the kinetic friction between the box and the incline is 0.22, the applied force is in the horizontal direction, and the box moves with a constant speed.
Part A: What is the work done by the weight on the box?
Please show all work to calculate the work done by the weight on the box.
If a visible photon with wavelength 434 nm is emitted from an atom in a hydrogen gas lamp, what energy state was the atom in before the photon was emitted? That is, what was the number for that state?
Use Newton's laws to determine the value of electron's velocity after it moves 0.40cm from rest. Express your answer using two significant figures
Eyeglass lenses can be coated on the inner surfaces to reduce the reflection of stray light to the eye. If the lenses are medium flint glass of refractive index 1.62 and the coating is fluorite of refractive index 1.432,
A 6.0 μF air capacitor is connected across a 100 V battery. After the battery fully charges the capacitor, it is immersed in transformer oil (K = 4.5). How much additional charge flows from the battery, which remained connected during the process?
Consider an optical gain medium that has two levels at E 1=1.50 eV and E 2=3.50 eV. What is the spontaneous emission wavelength
Two point charges of magnitude 4.0 μC and -4.0 μC are situated along the x-axis at x1 = 2.0 m and x2 = -2.0 m, respectively
The rectangular loop in the drawing consists of 75 turns andcarries a current of I = 4.1 A. A 1.6-T magnetic field isdirected along the +y axis. The loop is free to rotateabout the z axis. Determine the magnitude of the nettorque exerted on the loop.
A handball of mass 0.10 kg, traveling horizontally at 25 m/s, strikes a wall and rebounds at 19m/s. What is the change in the momentum of the ball.
question1a boat crosses a river of width 228 m in that the current has a uniform speed of 1.97 ms. the pilot maintains
Top professional pitchers can throw fastballs at speeds of100mph. Given that 1 mph=0.447m/s. WHat is this speed in meters per second
a 1.00 micro f capacitor c1 is charged by being connected across a 10v battery and charged to 10 micro c. it is then
Five Coulombs of charge pass a point in a wire in 20 second. Estimate what is the average current flow
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