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Imagine that you have a gas confined in an insulated cylinder by a piston. Imagine that you suddenly push hard on the piston, compressing the gas to one-half its volume.
A 1.00×104 kg railroad car is rolling at 1.00 m/s when a 8000 kg load of gravel is suddenly dropped in. What is the car's speed just after the gravel is loaded?
A solid sphere of radius R = 40cm has a total positive charge of 26 mC uniformly distributed throughout its volume (the sphere is a non-conductor). Calculate the magnitude of the electric field at:
A copper penny has a mass of 3.1 g. Being electrically neutral it contains equal amounts of positive and negative electricity.
How does the mass density compare to the density of individual neutrons (take them to have a radius of 2.3 attometers.
A sound source of 500 Hz with an acoustic power of 1/10 of a watt how do you find the intensity 1/2 a m from the source, the pressure amplitude, and the magnitude of the specific acoustic impedance
Calculate the rate of heat transfer between the turbine and the surroundings . note the relative magnitudes of the kinetic energy and enthalpy change.
Now consider the core to be surrounded by a cladding material with an index of refaction of n=1.30. What is the maximum angle θ, that light can enter the fiber and be trapped by total internal
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.46 x 106 m/s. (a) Find the force acting on the electron as
A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 598 N. As the elevator later stops, the scale reading is 392 N. Assume the magnitude of the ac
Consider light that is refracted by a prism shaped like an equilateral triangle. The incident ray is parallel with the prism's base. what is the total deflection of the ray, given that the index of
A 6300-kg satellite is in a circular earth orbit that has a radius of 3.0 x 107 m. A net external force must act on the satellite to make it change to a circular orbit that has a radius of 8.3 x 106 m
A proton is fired from far away toward the nucleus of a mercury atom. Mercury is element no.80. If the initial velocity of the proton is 4 x 107 m/s, what is the distance of closet approaching to th
In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 5.00 107 J at lift-off. What is the work done on the jet by the catapult?
The vertical component of the Earth's magnetic field at this location has a magnitude of 44µT. What is the magnitude of the induced emf between the ends of the beam?
A 20 x 10-9 C charge is at the origin, and a -10 x 10-9 C is at X = 15 cm. At what point or points on the x-axis is the electric potential zero?
Using the approximate results of part (b), calculate the gradient of the potential along the x axis, and show that thenegative gradient is equal to the x component Ex of the electricfield.
A battleship simultaneously fires two shells toward two identical enemy ships. One shell hits ship A, which is close by, and the other hits ship B, which is farther away. The two shells are fired at
Draw the vector starting at the rowboat. The location, orientation and length of the vector will be graded. The vector's length is displayed in meters per second.
Now, consider that both shells are fired at an angle greater than 45 degrees with respect to the horizontal. Remember that enemy ship A is closer than enemy ship B Which shell reaches the greater ma
The vertical component of the earth's magnetic field points down, toward the surface of the earth, and has a magnitude of 2.45 x 10-5 T. What is the acceleration of an electron due to this field comp
Now, consider that both shells are fired at an angle greater than 45 degrees with respect to the horizontal. Remember that enemy ship A is closer than enemy ship B Which shell is launched with a gre
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 14.5 rad/s2. Find the speed of a point on the blade 2.15 m from the axis of rotation when the blade
A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping through a vertical distance of 0.440 m. Find the final speed v of the sphere's center of mass.
Calculate the work done by the spring when it is stretched from its equilibrium position to 0.056m past its equilibrium. Answer in units of mJ.