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A fire hose must be able to shoot a stream of water a specified height, straight up. Calculate the gauge pressure (difference between actual pressure and atmospheric pressure) required in the water main supplying the hose. Assume that the diameter of the main is sufficiently larger than that of the hose that the velocity of the water in the main is negligible.
An ideal refrigerator maintains a temperature of 8c inside it, whereas in the kitchen the temperature is 25c. find te energy ejected into the kitchen
A structural I beam is made of iron. A view of its cross-section and its dimensions is shown in the figure, where d = 2 cm, w = 29 cm, h = 30 cm, How many atoms are there in this section
At what angle must the cannon be fired
Consider a series RLC circuit with R = 15 , L = 196 mH, C = 75 µF, and a maximum voltage of 148 V. What is the impedance of the circuit at resonance
A metal bar with a resistance of 30 ohms is rotated around its center in a magnetic field of strength 0.5 T, what is the electrical power dissipated in the resistor
Find the mechanical energy of a block- spring system having a spring constant of 1.3 N/cm and an oscillation amplitude of 2.4 cm
Two thin lenses with a focal length of magnitude 12.0cm , the first diverging and the second converging, are located 9.00cm apart. What is the height of the final image
Suppose that the light is incident at right angles to the film. what is the minimum distance from the slits to the screen when 580 nm light is used.
An automobile emits 20 lbs of CO2 per gallon of gasoline burned. how many billions of lbs of CO2 are emitted every year
A(n) 1340 kg car moving with a speed of 16.6 m/s collides with a utility pole and is brought to rest in 0.299 s
A lead ball, with an initial temperature of 25oC, is released from a height of 101.0 m. It does not bounce when it hits a hard surface. Presume all the energy of the fall goes into heating the lead. Find the temperature (in degrees C) of the ball ..
Hooke's Law states that the force needed to stretch a spring is proportional to the amount the spring is stretched. If 10.0 N of force stretches a spring 4.00cm
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