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Water is flowing in a cylindrical pipe of varying circular cross-sectional area, and at all points the water completely fills the pipe. At one point in the pipe, the radius is 0.155 m. What is the speed of the water at this point if the volume flow rate in the pipe is 1.50 m^3/s .At a second point in the pipe, the water speed is 3.75 m/s. What is the radius of the pipe at this point?
A distant galaxy emits light that has a wavelength of 499.8 nm. On earth, the wavelength of this light is measured to be 503.8 nm. Find the speed of the galaxy relative to the earth
A positive charge q=3.2 x 10^-19 C moves with a velocity v=(2i + 3j - k)m/s through a region where both a uniform magnetic field, What angle does the force vector make relative to the positive x axis
Suspend an ideal spring vertically from a ceiling and attach an object to the other end and then slowly lower the object until the upward force exerted by the spring on the object balances the weight of the object.
A bullet is fired into a block of wood sitting on a block if ice. The bullet has an initail velocity of 500m/s and a mass of 0.005 kg. What is the magnitude of the impulse that acts on the block of wood
A vertical wall (6.3 m x 3.3 m) in a house faces due east. A uniform electric field has a magnitude of 150 N/C. What is the electric flux through the wall
Light of a wavelength 450 nm is incident on a sodium emitter in a photoelectric effect apparatus. What is the cutoff frequency for the emitter
What is the maximum positive potential energy. Write down an expression for U as a function of x, with U in joules and x in meters.
Using kinematic equations prove that if two balls are released simultaneously from a table, one with zero velocity and other with horizontal velocity, they will both reach ground at the same time.
For a long solenoid, the magnetic field strength within the solenoid is given by the equation where t is time in seconds. find the radius of the solenoid
An object of mass 5kg is moving with an momentum of 50 kg m/s. What is the speed of the object? What is the magnitude of the momentum of the object
A pump uses a piston of 15 cm diameter which moves 2 cm/s. What is the fluid velocity of a tube 3mm in diameter
A race car is moving with a velocity of 144 kilometers/hour. The driver applies the brakes, and the car comes to a halt in 12.0 seconds. What is the acceleration of the car after 12.0 seconds? A. -12 m/s^2 B. -3.3 m/s^2 C. 3.3 m/s^2 D. 10.3 m/s^2
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