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Suppose you are a Medieval knight attacking a castle with a cannon. The ball leaves the cannon with a speed of 44.3 m/s. The barrel angle with respect to the surface is 37.5o, and you make a perfect hit on the tyrant's chamber which is at the same level as the cannon's muzzle. Evaluate the time of flight of the cannon ball?
A 2.05-kg block is on a plane at 19 degrees with respect to the horizontal. The coefficent of static friction between the block and the plan is 0.80. How many forces are acting on the block
A tight uniform string with a length of 1.80m is tied down at both ends and placed under a tension of 100N/m. What is the mass of the string
Electrons are accelerated through a potential difference of 39.0 V. The beam of electrons then passes through a single slit. estimate the width of the slit
A reaction vessel contains 8.06 g of H2 and 64.0 gof O2 at a temperature of 125?C and a pressure of 125kPa. What is the volume of the vessel
suppose an electron is released from rest in a uniform electric field whose magnitude is 7.20 x 103 vm.a through what
A storage tank has a diameter of 80 ft, a height of 25 feet, andcontains oil to a height of 15 ft. The suction pumps, whichcan handle 15, 000 bbl/d are started, but the safety valves areclogged and a vacuum is drawn in the tank.
Suppose a monochromic light strikes a grating at normal incidence. what is the frequency of the light that passes through
The membrane of the axon of a nerve cell is a thin cylindrical shell of radius r = 10-5 m, length L = 0.09 m, and thickness d = 10-8 m. The membrane has a positive chargeon one side and a negative charge on the other, and acts as aparallel-plate cap..
A man pushes an 80.0 N crate a distance of 5.00 m upward along a frictionless slope that makes an angle of 30o with the horizontal. how much work is done by the man
q. two spherical conductors are connected by a long conducting wire and a total charge of 20.0 muc is placed on this
A parallel-plate capacitor has 1.00 cm2 plates that are separated by7.00 mm with air between them. how much energy does it store
An object with mass m1 = 5.90 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley, Find the magnitude of the acceleration of each object
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