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Three forces of magnitudes F1 = 4.0 N, F2 = 6.0 N, F3 = 8.0 N, F4 = 5.0 N, and F5 = 5.0 N are applied to a block of mass m = 3.0 kg, initially at rest, at angles shown on the diagram. (Figure 1) All angles should be measured from the positive x axis. Calculate the magnitude of the resultant force acting on the block. What angle does the resultant force make with the positive x axis? What is the magnitude of the block's acceleration? What angle does the acceleration make with the positive x axis?
When people exercise they shed heat to the environment by sweating and radiating, calculate the rise in body temperature after one hour
A puck (mass m1 = 1.30 kg) slides on a frictionless table as shown in the figure below. The puck is tied to a string that runs through a hole in the table and is attached to a mass m2 = 3.9 kg. What is the change in the kinetic energy of the puck
A 0.873-kg block is held up against a ceiling by a pole that makes an angle of 21 degree with respect to the vertical; What minimum force in the pole is necessary to get the block moving
Find the electric field strength from the wire. How long is each spring when hanging as shown.
A car with energy absorbing bumper hits a tree. The mass of the car is 1500kg, the initial velocity was 10 m/s. What was the energy absorbed
A 12.00kg runaway grocery cart runs into a spring with spring constant 260-N/m and compresses it by 65 cm. What was the speed of the cart just before it hit spring.
Coin is placed 14.0 from the axis of the rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on turntable until a rate of 40.0 (revolutions per minute) is reached, at that point the coin s..
A harmonic wave on a string with mass per unit length 0.065 kg/m and a tension of 71.0 N has an amplitude of 6.9 cm. find the average power propagated along the string
A golf ball strikes a hard, smooth floor at an angle of 20.6 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.0298 kg, and its speed is 34.6 m/s just before and after striking the floor. What is the magnitude of t..
The electric field between two equal but opposite point charges, at a point four-ninth the distance from the negative charge to the positive charge, is 4.39*10
An ideal fluid in a pipe of diameter 14cm is moving at 6.0 m/s. If the incompressible fluid density is 1.05g/cc, what is the flow rate in kg/s and what is the speed of flow if the pipe narrows to 4.0cm radius?
A liquid fueled rocket is red on a test stand. The rocket nozzle has an exit diameter of 30 cm, find the temperature of the gases at the nozzle exit plane
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