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Water impinges on a fixed turbine blade with velocity v. The blade is curved so that it deflects the water by 180 degrees from its original direction with no loss in speed. The mass of the water striking the blade per unit time is m. What is the force exerted on the blade?
a 4.6 g bullet leaves the muzzle of a rifle with a speed of 320 ms. what force assumed constant is exerted on the
A room measures 3.0 m by 4.5 m by 6.0 m. If the heating and air-conditioning ducts to and from the room are circular with diameter of 0.30 m, WHat is the necessary flow speed in the duct
A small positively charged sphere of mass 4.68 g and charge +72 micro C is suspended horizontally in static equilibrium, find the magnitude of the tension in the horizontal string
You have 33 tuning forks that oscillate at close but different frequencies. What are the (a) maximum and (b) minimum number of different beat frequencies you can produce by sounding the forks 2 at a time, depending on how the frequencies differ?
An experiment was performed where a quartz-iodine lamp was used to measure the photocurrent in microamperes in intervals of 10 nm from 400 nm to 900 nm for the voltage settings of 60, 80, 100, and 120V.
suppose that you need to get a heavy couch into the bed of a pickup truck. part a figure you know the bed of the truck
a double-slit interference experiment is performed using blue light from a hydrogen discharge tube 486 nm. the
Objects with masses of 135 kg anda 435 kg are separated by 0.430 m. Find the net gravitational force exerted bythese objects on a 51.0 kg objectplaced midway between them
You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. Find the angle of incidence of the laser ray on the mirror
A 700. newton stunt pilot flying a 980.kg plane in a vertical loopwith a radius of 600. meters is "weightless" at the top of theloop. Calculate the plane's speed
three identical electrically charged balls each of mass 2 kg are suspended from a common point with strings of the same
An athlete completed a marathon in 2 h, 39 min, 41 s. Determine the average speed (in miles per hour) of the athlete.
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