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A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. Angling the mortar at an angle of ? = 67.0o (as shown), the crew fires the shell at a muzzle velocity of 232 feet per second. How far down the hill does the shell strike if the hill subtends an angle ? = 36.0o from the horizontal? (Ignore air friction.) How long will the mortar shell remain in the air? How fast will the shell be traveling when it hits the ground?
A solenoid 70 . 8 cm long has 640 turns and a radius of 2 . 34 cm. If it carries a current of 2 . 03 A, find the magnetic field along the axis at its center
A 2.00-m tall basketball player is standing on the floor 10.0 m from the basket. If he shoots the ball at a 40 degree angle from the horizontal, at what initial speed must he throw the ball so that it goes through the basket without striking the b..
Consider a piece of nichrome wire which is attached to a 1.2-mm-diameter aluminum wire, as diagrammed in the figure below. What diameter should the nichrome wire in the figure below be in order for the electric field strength to be the same in..
A 3.2 kg sloth hangs 3.2 m above the ground. What is the speed of the sloth at this time
Consider a spherical Gaussian surface which surrounds two electric charges (+Q), What is the net electric flux through the Gaussian surface
During 9.93 seconds a motorcyclist changes his velocity from v1,x = -37.3 m/s and v1,y = 14.1 m/s to v2,x =-21.9 m/s and v2,y = 29.3 m/s, Find the components of the motorcycle\'s average acceleration
A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 67.0-gram mass is attached at the 14.0-cm mark, What is the mass of the meter stick
A ray of light is incident on the outer glass wall of an aquarium which have a refractive index of 1.51. If the reflected portion of the light is completely polarized at what angle to the normal does the ray enter the water
A playground merry-go-round of radius R = 1.20 m has a moment of inertia I = 265 kg · m2, What is the new angular speed of the merry-go-round
A 2.0 kg mass is connected to a spring with a spring constant of 9.0 N/m. What is the period of this simple harmonic motion
A horizontal uniform bar of mass 2.7 and length 3.1 is hung horizontally on two vertical strings. String 1 is attached to the end of bar, and string 2 is attached a distance 0.7 from other end. A monkey of mass 1.6 walks from one end of the bar to th..
1200 KVA TRANSFORMER CHANGES TEH INCOMING VOLTAGE FROM 1200 VOLTS TO 400 VOLTS. WHAT IS THE INCOMING CURRENT
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