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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?
The "tube length" of a microscope is defined to be the difference between the (objective) image distance and objective focal length: L=di%u2212fobjective. How far from the object should this lens be placed
A Carnot cycle uses a cold reservoir at 280 K. In each cycle, 2500 J of heat is supplied and 1200 J of work is done. What is the temperature of the hot reservoir
q1. a 9.7 v battery is connected to a bulb whose resistance is 1.3. how many electrons leave the battery per minute?q2.
Assume a car's brakes can produce an acceleration of -7 m/s2. If the car is travelling at an initial speed of 28.0m/s, what is the minimum distance necessary to stop car.
An x-ray tube is operated at 40600 V. find the minimum wavelength of the radiation emitted by this tube
A person who weighs 656 N is riding a 91-N mountain bike. compute the area of contact between each tire and the ground
A computer to be used in a satellite must be able to withstand accelerations of up to 27 times the acceleration due to gravity. What is the minimum amplitude of vibration that must be used in this test
A 0.20-kg baseball is dropped and reaches a speed of 1.0 m/s just before it hits the ground. What is the change in the ball's momentum
A 2 meter wire carrying 1 A of current is at a 90 degree angle to a magnetic field. If the current feels a force of 1 N from the magnetic field, what is the strength of the field
What is formula for the acceleration a of the cart in terms of the tension T, and its mass M? make use of the two equations you found above to eliminate T to give the acceleration of the cart in terms of M, m and g. Compute the numerical value for..
A solid cylinder of mass 14.0 kg rolls without slipping on a horizontal surface. At the instant its center of mass has a speed of 3.0 m/s, determine the translational kinetic energy of its center of mass.
A 45 g golf ball is pushed up a 30° ramp. The ball starts from rest and the length of the surface of the ramp is 5 m. What was the magnitude of the pushing force
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