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A 150-lb fireman is holding a hose which has a nozzle diameter of 1 inch and hose diameter of 2 inches. If the velocity of the water at discharge is 60 ft/s - determine the resultant normal and frictional force acting on the man's feet at the ground. Neglect the weight of the hose and the water within it. yw = 62.4 lb/ft3 .
The author's cat enjoys chasing chipmunks in the front yard. In this game, the cat sits at one edge of a yard that is w = 29 m across (see figure), watching as chipmunks move toward the center.
the wooden box is sitting on a spring scale which fully supports it. what is the reading of the spring scale while the
A baseball player is trying to stretch a double into a triple. The 62.0 kilogram player begins sliding 3.00 meter from third base with a speed of 4.23 m/s. determine how much work was done on the player by friction
A long, straight wire runs along the axis of the solenoid, carrying a current of 15. Find out the magnitude of the net magnetic field a radial distance of 0.80 from the straight wire.
The Sun is moving in a circular orbit around the center of ourGalaxy. The radius of this orbit is 3 x 104 light-years. Calculate the period of the orbital motion in years
On a spacecraft two engines fire for a time of 479 s. One gives the craft an acceleration in the x direction of ax = 4.99 m/s2, Find the magnitude of the initial velocity
A Styrofoam cup holding 155 g of hot water at 97°C cools to room temperature, 23.0°C. What is the change in entropy of the room
Johnny Jumper's favorite trick is to step out of his high-rise window and fall 37.0 m into a pool. Find Johnny's de Broglie wavelength at this moment
Three point charges are arranged along the x-axis. Charge q1= -4.85 nC is located at x1= 0.205m , and charge q2= 2.75 nC is at x2= -0.310m, What is the direction of the net force on q3
The turntable of a record player has an angular speed of 9.7 rad/s at the instant it is switched off. 4.0 sec later, Find through how many radians does the turntable rotate from the time it is turned off until it stops
a heater coil connected to a 240 v ac line has a resistance of 58 .a what is the average power used?b what is the
In Armageddon Bruce Willis and the boys land on an asteroid so as to blow it up and save the planet. Asteroid Ceres has a radius of 287 km and a mass of 9.4X10^20 kg. What is the value of g at the surface? How fast would you have to run to put your..
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