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To fill a child's backyard inflatable wading pool you use a gardenhose with a diameter of 2.9 cm. Water flows from this hose with aspeed of 1.3 m/s. How long will it take to fill the pool to a depthof 14 cm if it is circular and has adiameter of 2.4 m?
Steel expand 11 pars in million for each 1C change. think about the 1.3-km main span of steel for the Golden Bridge. if the span had no expansion joints, show that the span would be 0.21 m longer for a 15 C increase in temperature.
A bungee jumper undergoes simple harmonic motion with amplitude 7.9m and frequency 0.110Hz. Determine the bungee jumper's velocity
if a bullet with a mass of 0.008 kg is moving with a velocity of 454 ms and it hits a stationary block with a mass of
A river flows due south with a speed of 2.30 . A man steers a motorboat across the river; his velocity relative to the water is 4.40. What is the velocity of the boat relative to the earth
After the interaction, the particles (which can't be distinguished) are observed moving at angles 55.3° and 34.7°, both angles being measured with respect to the original direction of motion. Illustrate what are the final speeds of the particles?..
A car of mass 930 kg is traveling over the top of a hill, If the hill has a radius of curvature of 38 m and the car is traveling at 13 m/s, what is the normal force between the hill and the car at the top of the hill
A transformer consisting of two coils wrapped around an iron coreis connected to a generator and a resistor, as shown in the drawing. There are 11 turnsin the primary coil and 22 turns in the secondary coil. The peakvoltage across the resistor is ..
neutrons are slightly more massive than protons. if the mass of a neutron were smaller than its actual value yet still
A 4.7×10?2-T magnetic field passes through a circular ring of radius 2.8cm at an angle of 14?with the normal, Find the magnitude of the magnetic flux through the ring
in gaseous sodium chloride chloride ions have one more electron than they have protons and sodium ions have one more
People who do chin-ups raise their chin just over a bar (the chinning bar), supporting themselves only by their arms. Find the force his arms must exert on him during the accelerating part of the chin-up
A ruler of mass m = 75g and L=3.0meters is placed so that it is exactly balanced across two spinning cylinders a distance d = 1.0meters apart. What is the frequency of oscillation in the ruler
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