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makes an angle of 45 degrees with the horizontal by an external force. The object moves up the incline a distane 3m.
a) Find the works done by the gravitational force and normal forces.
b) What is an increase in the gravitational energy of the object?
A therapist examines the range of motion of an thlete's knee joint during her rehabilitation from a knee injury, What was the angular displacement of the leg from full extension to full flexion
The refractive index of a material is 2.58. What is the critical angle for a light ray
What least amount heat is needed to bring 20-g of water at 20C to the boiling point and completely boil it away.
how much time passes before the brick lands on the ground. If the wind speed is 26 mph, find the velocity of the plane in still air.
Light of wavelength 600 nm falls on a 0.49 mm wide slit and forms a diffraction pattern on a screen 1.0 m away. Find the position of the first dark band on each side of the central maximum
A uniform plank of length 5.8 m and weight 202 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the Illustrataing). To what distance x can a person who weighs 441 N walk on the overhanging part of t..
In a material having an index of refraction n , a light ray has frequency f, wavelength ?, and speed v. What is the frequency of this light in vacuum and in a material having refractive index n1
A circular coil of radius 6.0 cm has 1500 turns and a total resistance of 0.25. Initially it is in a region with a uniform magnetic field of 0.25 T perpendicular to the coil area. Find the average emf induced in the coil
A 515-? resistor, an uncharged 1.50-µF capacitor, and a battery with an emf of 6.45 V are connected in series. What is the RC time constant?
On a banked race track, the smallest circular path on which cars can move has a radius of 102 m, while the largest has a radius 157 m, Find the smallest and largest speed the cars can remove without the presence of friction
In one design, the large spring with spring constant 2.0×10^4 was placed behind the cannon. The other end of the spring braced against a post that was firmly anchored to the ship's frame.
Vector A - Vector B=(-51.4m)x, Vector C=(62.2m)x, and Vector A + Vector B + Vector C=(13.8m)x, Find Vector A and express in terms of unit vector x
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