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Question: An object fired at an angle of 39 degrees above horizontal takes 1.10 s to travel the last 12.5 m of its vertical distance and the last 11.2 m of its horizontal distance. With what velocity was the object launched?
a ladder of length l = 2.2 m and mass m = 14.0 kg rests on a floor with coefficient of static friction ?s = 0.53. what is the normal force the floor exerts on the ladder
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.370mm wide. What is the width of the central bright fringe
A simple Atwood’s machine uses a mass less pulley and two masses m1 and m2. Starting from rest, the speed of the two masses is 8.4 m/s at the end of 7.2 s. At that time, the kinetic energy of the system is 62 J and each mass has moved a distance of 3..
A canoe has a velocity of 0.550 southeast relative to the earth. The canoe is on a river that is flowing at 0.510 east relative to the earth. Find the magnitude of the velocity of the canoe relative to the river.
The average intensity of light emerging from a polarizing sheet is0.767 W/m2, and the averageintensity of the horizontally polarized light incident on the sheetis 0.937 W/m2.
q1. the two blocks are on frictionless inclines and are in static equilibrium. the block on the left has a mass of 49
An electron with a speed of 3.55·E5 m/s enters a uniform mangetic field of magnitude 0.0397 T at an angle of 34.5° to the magnetic field lines, Determine the radius of the helical path
A thin rectangular plate of uniform areal density ? = 2.90 kg/m2 has length of 34.0 cm and width of 24.0 cm. There is a circular hole of radius 6.00 cm with center at (x,y) = (11.00,10.00) cm in the plate. Calculate the mass of plate
A hydrogen atom initially in its ground state absorbs a photon and ends up in the n=6 state. Calculate the energy of the incident photon
A 497-turn solenoid has a radius of 8.75 mm and an overall length of 12.4 cm. If the solenoid is connected in series with a 2.50-? resistor and a battery, what is the time constant of the circuit
Two cars, both of mass m, collide and stick together. Prior to the collision, one car had been traveling north at speed 2v, while the second was traveling at speed v at an angle phi south of east (as indicated in the figure).
A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 2.50 hours. What is the density of the planet? Assume that the planet has a uniform density.
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