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Water flows through a fire hose of diameter 7.09 cm at a rate of 1.2 x10-2 m3/s. The fire hose ends in a nozzle of inner diameter 2.69 cm. What is the velocity with which the water exits the hose?
An electric dipole consists of charges +e and -e separated by 0.76 nm. It is in an electric field of strength 2.50 10^4 N/C, What is the torque on the dipole when it is perpendicular to the field
A 51.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 12 ? 10-8, What must be the diameter of the wire
a rock is thrown downward from the top of a 40 m tower with an initial speed of 12 m/s. if g-9.8 m/s^2, what is the speed of the rock just before hitting the ground
Work of 1500 J is done on an ideal gas, but the internal energy increases by only 800 J. What is the amount and direction of heat flow into or out of the system
A parallel-plate air capacitor with a capacitance of 236 has a charge of magnitude 0.13 on each plate. The plates have a separation of 0.33.What is the potential difference between the plates.
A 1.5 m^3-volume tank holds oxygen gas (M = 32 g/mole) at the pressure of 500,000 Pa. The temperature is 27 C. Find the mass of oxygen in the tank (in kg)
A 25 g glass tumbler contains 410 mL of water at 24 °C. If two 20 g ice cubes each at a temperature of -3 °C are dropped into the tumbler
Two large parallel plates are separated by 0.90cmand carry uniform charge densities equal in magnitude and opposite in sign, Find the magnitude of the charge density on the plates
A cannon, placed in the valley, fires a shell at 52 degrees with respect to the horizontal line. The initial speed of the shell is 516 m/s, Calculate the range of the shell
What is size of the gravitational force on the moon
The average resistivity of the human body is 5 ohm*m. The conducting path between two hands is approximated as a cylinder with length 1.6m, what is the resistance between the hands
A disk-shaped merry-go-round of radius 2.73m and mass 185kg rotates freely with an angular speed of 0.681rev/s. What is the final angular speed of the merry-go-round
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