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Suppose that, because of an aneurism, the cross-sectional area, A(1), of a normal portion of a blood vessel increases to a value A(2) = 1.7A(1). The speed of blood (density 1060 kg/m^3) through the normal portion is 0.40 m/s. Assuming that the blood vessel is horizontal (the person is lying down), determine the amount by which the pressure in the enlarged region exceeds that in the normal region.
Find the magnitude and direction of the force on a proton at x = -3.2 m, y = 0.9 m.
An electron starts from rest 75.5 cm from a fixed point charge with Q = -0.150 µC. How fast will the electron be moving when it is too far away.
Two loudspeakers are placed 3-m apart. They emit 498 Hz sounds, in phase. A microphone is placed 3.2m distant from a point midway between the two speakers, where an intensity highest is recorded.
What is the maximum speed of the ball.
The driver of an 1800 kg car travelling at 23 m/s slams on the brakes, locking the wheels on the dry pavement. The coefficient of kinetic friction between rubber and dry concrete is typically 0.700.
A train is traveling up a 3.3 incline at a speed of 3 when the last car breaks free and begins to coast without friction. How long does it take for the last car to come to rest momentarily? How far did the last car travel before momentarily coming..
Find out the intensity if the frequency is increased to 2.90 kHz while constant displacement amplitude is maintained.
What is current in the coil
A U tube is filled with water, and the two arms are capped. The tube is cylindrical, and the right arm has twice the radius of the left arm. The caps have negligible mass, are watertight, and can freely slide up and down tube.
Consider two inertial reference frames. while an observer in each frame measures the following quantities, which measurement made by two observers must yield the same results.
Find an equation for the change in wavelength of a scattered photon by Compton effect.
A uniform ladder 15 ft long is leaning against a frictionless wall at an angle of 56° above the horizontal. The weight of the ladder is 35 pounds. A 77 lb boy climbs 6.0 ft up the ladder. What is the magnitude of the friction force exerted on the lad..
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