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A certain stretched string has a frequency of 250Hz , what is the new frequency if one (a) increase the tension by a factor of 4 while keeping everything else constant (B) increase the length by a factor of 3 while everything else constant (c) increase the mass / length by a factor of 2 while everything is constant (d) decrease the diameter by a factor of 2 whiles everything else constant
Discover the maximum net charge that can be placed on a spherical conductor of radius 24 cm before dielectric breakdown of the air occurs. What is the potential of the sphere when it carries this maximum charge?
One end of an insulated metal rod is maintained at 100 degrees C , while the other end is maintained at 0 C by an ice-water mixture. Find the thermal conductivity k of the metal
With what speed must a ball be thrown vertically from ground level to rise to a maximum height of 36 m
A 150g copper bowl contains 220 g of water, both at 20.0degrees C. A very hot 300g copper cylinder is dropped intothe water, What is the original temperature of the cylinder
The human brain consumes about 22 W of power under normal conditions, though more power may be needed during exams. How long can one Snickers bar (280 Cal per bar) power the normally functioning brain?
question a rectangular loop of copper wire of resistance r has width a and length b. the loop is stationary in a
Find the current in the resistor (in A). Find the magnetic force on the bar (in N). Find the power dissipation in the resistor (in W). Find the rate of the mechanical work done by the agent pulling the bar (in W).
A block of wood in the shape of a cube, 5.0 cm on a side, is floating in water with its top face parallel to the surface of the water. With a ruler, What is the density of that piece of wood
question1a commercial aircraft receives a homing radio signal with an intensity of 12 muwm2 when it is 11 km from the
A 0.450-kg ice puck, moving east with a speed of 5.46m/s, What is the speed of the 0.450-kg puck after the collision
Two charges, +e and -e, are a distance of 0.870 nm apart in an electric field, E, that has a magnitude of 3.09 kN/C, Calculate the torque on the dipole in the electric field
q1. consider a too-small space station that consists of a 3.1 m radius rotating sphere. a man standing inside is 2.0 m
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