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A 250g , 49.0 cm diameter turntable rotates on frictionless bearings at 60.0 rpm. A 20.0g block sits at the center of the turntable. A compressed spring shoots the block radically outward along a frictionless groove in the surface of the turntable.
What is the turntable's rotation angular velocity when the block reaches the outer edge?
For a 120-V rms 60-Hz voltage, an rms current of 70 mA passing through the human body for 1.0?s could be lethal. What must be the impedance of the body for this to occur
An electric eel develops a 460V potential difference between its head and tail. What is the energy delivered by this pulse
A piece of copper wire has a resistance per unit length of 6.45 10-3 ?/m, Find the magnetic field strength at the center of the coil
The object to be viewed is placed 2mm beyond the focal point of objective lens. What is the overall magnification of this microscope.
A loudspeaker of mass 22 {rm kg} is suspended a distance of h = 1.60 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.30 {rm m}.
A certain string just breaks while it is under 25 N of tension. A boy uses this string to whirl a 0.75-kg stone in a horizontal circle of radius 2.00 m. The boy continuously increases the speed of the stone. At around what speed would the string b..
A golfer imparts a speed of 27.3m/s to a ball, and it travels the maximum possible distance before landing on the green. How much time does the ball spend in the air
A proton moves at 4.9x106 m/s in a magnetic field where B = 0.42 T. what force does the proton experience
Suppose a mangetic field of 7.45 mT is pointing into a piece of paper and then we shoot a small charged metal ball, 4.8 grams and +1.52 uC, What is the magnitude and direction of the force on the particle
A proton and electron are far away from each other, how quick would the electron be going in the orbit if we assume centripetal motion?Therefore, what is the electrnss kinetic energy
Consider the process AB is this TS diagram for 2 moles of SO3 with all degrees of freedom active. calculate the heat input to the gas
A farsighted man uses eyeglasses with a refractive power of 3.57 diopters. Wearing the glasses 0.026 m from his eyes, What is the correct contact lens prescription
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