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A stone is dropped vertically from the top of a tower of height 40 m. At the same time a gun is aimed directly at the stone from the ground at a horizontal distance 30 m from the base of the tower and fired. If the bullet from the gun is to hit the stone before it reaches the ground, what is the minimum velocity of the bullet should be, approximately.
current passes through a solution of sodium chloride. in 1.00 second 2.68 x 1016 na ions arrive at the negative
A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3, find the volume of helium in the balloon when fully inflated
What are the x- and y-components of the electric field at (x, y) = (0 m, +4 m)? (a)Two charges are placed on the x-axis: one is placed at x = 3 m and the other is at x = -3 m.
A spaceship is 1600 m long when it is at rest. When it is traveling at a certain constant speed its length is measured by external observers and it is found to be 795 m. How much time does the roast beef spend in the oven
A block of mass 2.50 kg is pushed 2.60 m along a frictionless horizontal table by aconstant 16.0 N force directed 25.0°below the horizontal. Determine the work done by the net force on the block
Kenny pulls with a force of 850 N. Justin pushes with a force of 650 N. The crate weighs 1250 N and sits on a ramp that is 40 degrees from the horizontal. Tyler is pushing at an angle of 35 degrees with respect to the crate
An airplane is flying in a horizontal circle at a speed of 480km/hr. What is the radius of the circle inwhich the plane is flying
A 1.00 V potential difference is maintained across a 9.0 resistor for a period of 16.0 s. What total charge passes through the wire in this time interval
Four force vectors act simultaneously on a 65 kg object. Force One is 211 N West, Force Two is 193 N at an angle 28.0 degrees north of west, What is the magnitude of the final acceleration of the object
The voltage drop along a 30.0m segment of a power line made from copper wire ( a very good conductor) is 1.2 V, while carrying a current of 25.0A. How large is the electric field along the wire
The primary coil of a transformer has 100 turns and its secondary coil has 400 turns. what voltage is present in its secondary coil
Three parallel plate capacitors are connected in series. These capacitors have identical geometries, determine the dielectric constant of the material with which it is filled
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