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When a smooth constriction is installed across a flume, free surface level drops. Explain the reasons for this free surface change using the concepts of specific energy and total energy. Use the E-Y d
Consider a fusion reaction in which a proton fuses with a neutron to form a deuterium nucleus. How much energy is released in this reaction
The average speed of a nitrogen molecule in air is about 6.70 * 10^2 m/s, and its mass is about 4.68 * 10^-26 kg. What average force does the molecule exert on the wall
A 20-kg sled is pushed up a 34° slope to a vertical height of 140 m. A constant friction force of 50 N acts for the entire distance. What external work was required
-What is the total force on the bottom of a swimming pool 13.0 m with 5.8 m whose uniform depth is 1.9 m? What is the absolute pressure on the bottom of a swimming pool? What will be the pressure against the side of the pool near the bottom?
A wire, 24 m long, moves at 4.8 m/s perpendicularly through a 0.59 T magnetic field. What emf is induced in the wire
A quarterback is asked to throw a football to a receiver that is 32.9 m away. What is the minimum speed that the football must have
At a coal-burning power plant a steam turbine is operated with a power output of 607 MW. Find at what rate is heat discarded to the atmosphere by this power plant
A ball of steel of radius 1cm is dropped from a height of 2 meters. What is the final speed just before hitting the ground
Three identical point particles that have charge q are at the vertices of an equilateral triangle that is circumscribed by a circle of radius a that lies in the z = 0 plane, What is the electric potential at the origin
Balls B and C are identical and have the mass of 0.50 kg. After the collision, balls B and C have the similar speed, 4.2 m/s, but ball B moves at an angle of 22 above the horizontal and ball C moves at an angle of 22 below the horizontal. What is ..
A 1.02 kg mass is suspended from a wire changes the length of the wire by 1.20 mm. find the stress in the wire due to the suspended mass
One of the events in the Scottish Highland Games is the sheaf toss, in which a 7.92-kg bag of hay is tossed straight up into the air using a pitchfork. Using the total impulse produced by gravity, determine how long the sheaf is airborne
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