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Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed on a screen that is 2.56 m from the grating. In the first-order spectrum, maxima for two different wavelengths are separated on the screen by 3.18 mm . What is the difference between these wavelengths? Express your answer in meters.
What is the electric potential energy of the electron as it is at midpoint and at 14cm from 5 charge.
You want to shoot a 19cm long arrow parallel to this axle and through the wheel without hitting any of spokes. Suppose that the arrow and the spokes are very thin.
A steel ball with radius 1 cm is rolling along a table with speed 20.00 cm/sec when it starts to roll up an incline. How high above the table level would it rise before stopping.
A 3.57 kg block is drawn at constant speed 4.06 m along a horizontal floor by a rope exerting a 7.68 N force at angle of 15 degree above the horizontal. Work out the coefficient of kinetic friction between block and floor.
A 3 m long rigid beam with a mass of 115 kg is supported at each end. An 60 kg student stands 2 m from support 1. How much upward force does each support exert on the beam.
Four charges are placed at the vertices of a square, centered at the origin. If each side of the square has a length of 0.224 m, what is the strength and direction of net electric field at the origin? Express your answer in terms of the charge ma..
The coefficient of static friction between the stone and each side of the tread channel is 0.7. While the tire surface is rotating at a maximum speed of 1 m/s, the stone flies out of the tread. The magnitude FN of the normal force that each side of t..
A 2.20 kg object is suspended from a spring with k = 18.00 N/m. The mass is pulled 0.35 m downward from its equilibrium position and allowed to oscillate. What is the highest kinetic energy of object.
A shopper pushes a cart 50 m south down one aisle and then turns 90° west and moves 28 m. He then makes another 90° turn and moves 11 m.
A car started frm rest and accelerated for 5s at 6.00m/s2.Then it stayed at a constant speed for 20 s. It next slowed down at 3m/s2 until it came to a stop? how far did it travel during the first 5 s.
Consider a circuit. The three resistors are identical with R1 = R2 = R3= 160 ?, and the battery voltage is 50 V. What is the current through resistor R2?
A banked circular highway curve is designed for traffic moving at 67km/h. The radius of the curve is 209 m. Traffic is moving along highway at 48km/h on a rainy day.
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