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A 7.38- g bullet is moving at 670.00 m/s as it leaves the 0.62- m-long barrel of a rifle. What is the average force on the bullet as it moves down the barrel? Assume that the acceleration is constant.
An ideal transformer has 890 turns in its primary coil and 150 turns in its secondary coil. What is the output voltage of the secondary coil
A boy in a wagon is moving at 3.1 m/s east when another boy begins pulling on the wagon in the direction opposite to its motion at 1.25 m/s^2. (a) How long does it take to give the wagon a velocity of 7.4 m/s west? (b) How far from the starting po..
An air puck of mass m1 = 0.32 kg is tied to a string and allowed to revolve in a circle of radius R = 1.1 m on a frictionless horizontal table. What is the horizontal force acting on the puck
One solenoid is centered inside another. The outer one has a length of 55.0cm and contains 6800 coils, Find the emf induced in the inner solenoid
An electron with kinetic energy 3.90 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 12.0 cm. find the frequency of circling
A ballplayer standing at homeplate hits a baseball that is caught by another player at the same height above the ground from which it was hit. How high will the ball rise
Assume that the mud ends up uniformly distributed over a surface area of the valley measuring 0.3 km x 0.3 km, What is the mass of the mud sitting above a 4 m2 area of the valley floor
Estimate the kinetic energy of the Mars with respect to the Sun as the sum of the terms, that due to its daily rotation about its axis
A rectangular air mattress is 2.10m long, 0.48m wide and 0.09 m thick. If it has a mass of 2.30 kg, what additional mass can it support in water.
In diving to a depth of 983 m, an elephant seal also moves 693 m due east of his starting point. What is the magnitude of the seal's displacement
For lead 82Pb207 (atomic mass = 206.975880 u) obtain the mass defect in atomic mass units,
A tire is filled with air at 15 oC to a gauge pressure of 220 kPa. If the tire reaches a temperature of 38 oC, How much energy do you need to boil off 2 kg block of ice
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