Mechanics | Relativity Answers

Water is flowing down through the pipe shown in the drawing. Point A is 0.410 m higher than B. The speed of the water at A and B are vA = 5.00 m/s and vB = 2.78 m/s. Determine the difference PB - PA in pressures between B and A. The density of water is 1.00 × 103 kg/m3.

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A fountain sends a stream of water straight up into the air to a maximum height of 4.33 m. The effective area of the pipe feeding the fountain is 5.82 x 10-4 m2. Neglecting air resistance and any viscous effects, determine how many gallons per minute are being used by the fountain. (1 gal = 3.79 x 10-3 m3)

Two chambers are filled with a fluid. The ceiling of chamber 1 is at the same level as the floor of chamber 2. The pressure at the floor of chamber 2 is 1.7 × 105 Pa. If the area of the ceiling of chamber 1 is 2.0 m2, what is the magnitude F of the force exerted by the fluid on the ceiling of chamber 1?

A pipe contains a gradually tapering section in which its diameter decreases from 400 mm to 250 mm. The pipe contains an incompressible fluid of density 1000 kgm−3 and runs full. If the flow velocity is 2 ms−1 in the smaller diameter, determine the velocity in the larger diameter, the volume flow rate and the mass flow rate.

the engine of a vehicle moves it forward with a force of 9600N against a relative force of 2200N. if the mass of the vehicle is 3400kg, find the acceleration produced.

At what temperature will the root-mean-square speed of oxygen molecules have the value of 640 m/s? 1 kilomole of oxygen has a mass of 32kg.

place a coin on a paper and place it over a candle flame .the paper does not burn easily ,why?

WHAT DOES EINSTEIN FAMOUS E=MC SQUARE FORMULA MEAN?

A 200g mass hangs over a pulley and is attached to a 250g block as shown in the diagram. the block is observed to accelerate to the right with magnitude a= 1.00m/s^2.(you may ignor the mass ofstring, the pulley, and any friction in the pulley.)

A) Draw free body diagrams for the lock and the mass.
B) find the coefficient of kinetic friction between the block and the table.

Why are satellite TV dishes in the northern hemisphere pointed south and in the Southern Hemisphere pointed north?