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A cannon with a mass of 115 kg shoots a cannonball with a mass of 8 kg. If the speed of the cannon ball as it leaves the cannon is 185 m/s,what is the speed of the cannon at that time??(assume cannon is initially at rest, not fastened down in any way,and there is no friction between cannon and the ground)
A figure skater is spinning with an angular velocity of +14 rad/s. She then comes to a stop over a brief period of time. Determine the time during which she comes to rest
A firehose 15 m long is uncoiled by pulling the nozzle end horizontally along a frictionless surface at the steady speed of 2.9 m/s. How much work has been done on the hose
A decade before Einstein published his theory of relativity, J.J. Thomson proposed that the electron might consist of small parts, Find the total electric potential energy of this arrangement
A 19 g piece of Styrofoam carries a net charge of -8.5 µC, What is the charge per unit area on the plastic sheet
An artillery shell is fired with the initial velocity of 300 m/s at 54.7° above the horizontal. To clear an avalanche, it explodes on the mountainside 55.0 s after firing. What is the x and y components of the shell where it explodes, relative to its..
At time t = 0 s, a puck is sliding on a horizontal table with a velocity 3.60 m/s, 35.0° above the +x axis, What is the velocity of the puck at time t = 1.50 s
A hanging copper wire with diameter 1.4mm (1.4e-3m) is initially 0.95 m long. Find the approximate value of the effective spring stiffness of the inter atomic force
when viewing an object with a magnifying glass whose focal length is 10 cm, What is the observed magnification
What current flows through a 2.54 cm diameter rod of pure silicon that is 19.0 cm long, when 1000 V is applied to it
An underwater diver sees the sun 55 degrees above horizontal. How high is sun above the horizon to a fisherman in a boat above the diver.
A bug of mass m crawls with a constant speed v' along the spoke of a wheel that is rotating with angular velocity ?. The plane of the wheel is horizontal. Find all apparent forces acting on the bug if the spoke of the wheel is directed radialy out..
A satellite has a mass of 6079 kg, What would be the true weight of the satellite if it were at rest on the planet's surface
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