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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
A skydiver jumps out of a plane and fall 7.7 seconds before opening the parachute. What is the sky diver's speed when parachute opens?
The 3.0 kg mass from parts a and b above is separated into 1.5 kg pieces. One of these is moved 10cm in the y direction. Find the coordinates for and mark the center of gravity of the new system usi
A pair of parallel conducting plates have potentials of -17 V and 55 V, respectively. How much work needs to be done on an electron in order to move it from the 55 V to the -17 V plate?
Laser light sent through a double slit produces an interference pattern on a screen 3.0 m from the slits. If the second order maximum occurs at an angle of 12.0, at what angle does the eighth order
A 13 g bullet traveling 222 m/s penetrates a 2.0 kg block of wood and emerges cleanly at 159 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bulle
A 14000 kg railroad car travels alone on a level frictionless track with a constant speed of 25.0 m/s. A 5250 kg load, initially at rest, is dropped onto the car. What will be the car's new speed?
The plane of the coil is rotated from a position where it makes an angle of 40.0 degrees with a magnetic field of 1.10 T to a position perpendicular to the field. The rotation takes 7.00 * 10^-2 A.
What is bragg scattering angle (phi - first order) for an electorn beam scattered/difracted from the surface of Ni crystal with the atomic planes spacing D=.215 nm and the kinetic energy of the elec
Use the potential energy function found in part a to determine the electric field along the x-axis.
What is de broglie's Hypothesis? Derive the formula for de Broglie's wavelength for a particle of mass m from the basic energy momentum relations of waves and particles.
A mother pulls her daughter, whose mass is 22.1 kg and who is sitting on a swing with ropes of length 2.87 m, backward until the ropes make an angle of 31.1° with respect to the vertical. She th
A typical wall outlet voltage is 120 volts in the United States. Personal MP3 players require much smaller voltages, typically 86.86 mV. If the number of turns in the primary coil is 6908, calculate
Find the magnutide and direction of the electric field this disk produces at a point P on the axis of the disk a distance of 2.00 cm from its center.
A light ray is incident upon a plane interface between two materials. The ray makes an incident angle with the normal to the surface of 30 degrees in a material with index of refraction 1.3.