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Water flows through a horizontal tube of diameter 2.9cm that is joined to a second horizontal tube of diameter 2.0cm . The pressure difference between the tubes is 7.6kPa . Find the speed of flow in the first tube?
How does the decrease in gravitational potential energy of a falling ball compare to its increase in kinetic energy.
How much work should Denise do to drag her basket of laundry of mass 6.0 kg a distance of 3.0 m along a floor, if the force she exerts is a constant 50.0 N at an angle of 70.0° with the horizontal.
What is the strength of the electric field.
When a train's velocity is 12{rm{ m/s}} eastward, raindrops that are falling vertically with respect to the earth make traces that are inclined 30.0 ^circ to vertical on windows of the train.
Select ALL the valid statements, i.e., B, AC, BCD. If an equation is dimensionally A) correct, the equation may be correct. B) incorrect, the equation may be correct. C) correct, the equation may be wrong. D) incorrect, the equation must be wrong...
A skier (m=63.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 6.10 m and D = 12.2 m, find H.
What is the maximum sideways angle. What is the train's acceleration after its wheel begins to stick.
Find out the normal force exerted on the crate by the elevator.
A nonreflective coating (n = 1.40) covers the glass (n = 1.52) of a camera lens. Assuming that the coating prevents reflection of a specific wavelength (vacuum = 535 nm), find the minimum nonzero thickness that the coating can have.
The coefficient of static friction between the wall and the rod is μs = 0.575. Determine the minimum distance x from point A at which an additional weight w (the same as the weight of the rod) can be hung without causing the rod to slip at point A.
A steel aircraft carrier is 370 m long when moving through the icy North Atlantic at a temperature of 2°C. By how much does the carrier lengthen when it is travelling in the warm Mediterranean Sea at the temperature of 21 °C.
Its walls are equally high and 11 m apart. He takes off by driving a motorcycle up a short ramp sloped at an angle of 24°. Illustrate what minimum speed must he have in order to clear the canyon?
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