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A uniform current density of 2.0 Amps/m**2 is flowing down a cylindrical region of radius 3.0 meters. a) Use Ampere's law to find the B field as a function of cylindrical radius r from the center of t
A slide projector needs to create a 98-cm-high image of a 2.0 cm slide. The screen is 300 cm from the slide. What focal length does the lens need? Assume that it is a thin lens. How far should you
A clump of soft clay is thrown horizontally from 8.50 m above ground with a speed of of 20.00 m/s. Where is the clay after 1.50 s? Assume it sticks in place when its hits the ground?
The fifth-order maximum of the unknown wavelength exactly overlaps the third-order maximum of the red light. What is the unknown wavelength?
A gas is compressed from 600 cm3 to 200 cm3 at a constant pressure of 400 kPa. At the same time 100 J of heat energy is transferred out of the gas. What is the change in the thermal energy of the g
A 10-m-by-14-m house is built on a 12-cm-thick slab of concrete. What is the rate of heat loss through the slab if the ground temperature is 5.00° C while the interior of the house is 22.0°
Water undergoes viscous flow through two pipes with the same pressure difference between the ends. Pipe 1 has three times the diameter as pipe 2.
A thermometer flashes the temperature in Celsius and Fahrenheit along with the time. If it flashes -4° F, what will the thermometer flash in Celsius?
After the collision, the 0.20-kg puck has a speed of 1.5 m/s at an angle of 53° to the positive x-axis. Find the fraction of kinetic energy lost in the collision.
The space between the concentric spheres is filled with a liquid of dielectric constant 32. (a) Determine the capacitance of the capacitor. (b) What is the potential of the inner sphere?
Show that the force on each plate of a parallel plate capacitor has a magnitude equal to (1/2) QE, where Q is the charge on the capacitor, and E is the magnitude of electric field between the plate
A 4 µF capacitor is charged by a 200 V supply. It is then disconnected from the supply, and is connected to another uncharged 2 µF capacitor. How much electrostatic energy of the first c
View this energy as stored in the electrostatic field between the plates, and obtain the energy per unit volume u. Hence arrive at a relation between u and the magnitude of electric field E between
What is the area of the plates of a 2 F parallel plate capacitor, given that the separation between the plates is 0.5 cm?
As the chain is raised, assuming that the motor supplies a constant force, describe in a sentence or two how the motion of the anchor changes. Sketch a rough position versus time and velocity versus
A large number of 1 µF capacitors are available to him each of which can withstand a potential difference of not more than 400 V. Suggest a possible arrangement that requires the minimum numbe
Two charged conducting spheres of radii a and b are connected to each other by a wire. What is the ratio of electric fields at the surfaces of the two spheres?
Determine the potential energy of the system. Specify your choice of the zero of potential energy.
If Alice measures 1 hour of time passing using a clock she is holding, how much time will have elapsed as measured by the clock near the black hole ?
Sand is dumped onto a conveyor belt at the rate of 25 kg per second. What force is needed to keep the belt running at a linear speed of 2 m/s?
One mole of the carbon-12 isotope contains 6.022 × 1023 atoms. What volume in m3 would be needed to store one mole of cube-shaped children's blocks 2.00 cm long on each side?
A block of mass m is placed against the inner wall of a hollow cylinder of radius R that rotates about a vertical radius w. In order for friction to prevent the mass from sliding down the wall the c
What is the resultant velocity vector when you add your swimming velocity and the current velocity? Give the x and y components in m/s.
An object of unknown mass is initially at rest and dropped from a height H. It reaches the ground with velocity V1. The same object is then raised to the same height but this time is trhown downward
An unpolarized beam of light is incident on a pane of glass (n = 1.56) such that the reflected component coming off the glass is completely polarized. what is the angle of incidence in this case? Pl