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Water flows at the rate of 2.99 kg/s through a hose with a diameter of 3.70 cm. (a) what is the speed of water in this hose? (b) If the hose is attached to a nozzle with a diameter of 0.750 cm, what is the speed of water in the nozzle? m/s (c) Is the number of kilograms per second flowing during the nozzle greater than, less than, or equal to 2.99 kg/s? Describe.
On a spacecraft, two engines are turned on for 658 s at a moment when the velocity of the craft has x and y components of velocity v0x = 4115 m/s and v0y =5135 m/s, Find the x and ycomponents of the craft's acceleration
question a tiny sphere with a charge of q 6.4 microc is attached to a spring. two other tiny charged spheres each with
question a 5.00-kg object is initially at rest. the object is acted on by a 9.00-n force toward the east for 3.00 s. no
a man stands on the roof of a 13.0 -tall building and throws a rock with a velocity of magnitude 30.0 at an angle of
light of wavelength 615 nm in vacuum is incident perpendicularly on a soap film n 1.31 suspended in air. what are the
A geiger-muller tube is a type of gas-filled radiation detector. It can detect particles like X-rays, alpha particles and beta rays (electrons). what is the density of the gas in this geiger tube
A broad source of light (λ=589 nanometer) illuminates normally two glass plates 12 centimeter long hat touch at one end, Find how many bright fringes appear over the 12 centimeter distance
In 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift.
The body in the figure is pivoted at O, and two forces act on it as shown. If r1 = 2.65 m, r2 = 2.20 m, F1 = 4.24 N, F2 = 5.71 N, ?1 = 63.0°, and ?2 = 55.0°, what is the net torque about the pivot
The hydraulic oil in a car lift has a density of 8.56 x 102 kg/m3. The weight of the input piston is negligible. The radii of the input piston and output plunger are 6.28 x 10-3 m and 0.199 m, respectively.
questionthough 0 is often referred to as lower threshold of human hearing it is important to realize that the human ear
Two point charges q = +10C are a distance 0:12 m apart. Calculate the electrostatic force on each charge
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