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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.
If the index of the surrounding cladding is 1.23, what is the critical angle for total internal reflection for a light ray in the core incident on the core-cladding interface? Express the answer in
The index of refraction of the core of a piece of fiber optic cable is 1.76. If the index of the surrounding cladding is 1.23, what is the critical angle for total internal reflection for a light ra
A straight, nonconducting plastis wire 8.5 cm long carries a charge density of +175nC/m distribute uniformly along its lenght. It is lying on the horizontal tabletop.
A microscope with an 9.0 mm focal-length objective has a tube length of 14.0 cm For the microscope to be in focus, how far should the objective lens be from the specimen?
A 40 figure skater is spinning on the toes of her skates at 0.60 . Her arms are outstretched as far as they will go. In this orientation, the skater can be modeled as a cylindrical torso (35 , 20 av
If the field decreases at the rate of 0.490 T/s in some time interval, what is the magnitude of the emf induced in the loop during this interval?
If third charge q3=6.00 nC is now placed at the point x=4.00 cm, y=3.00cm , find the x- and y- component of the total force exerted on this charge by the other two.
A uniformly charged sphere, which carries a total charge Q, radius R, is rotating along z axis with an angular speed ?. Find the ratio of magnetic dipole moment, m and its mechanical angular momentu
How much fuel would it take to provide this much energy if all the rest energy of the fuel could be transformed to kinetic energy of the spaceship? (kg)
A charge q is placed at the centre of the shell. What is the surface charge density on the inner and outer surfaces of the shell?