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Which describes the electric potential and the electric field at a point due to a negatively charged particle?
A) The potential is a positive number; the field is a vector pointing toward the particle.
B) The potential is a positive number; the field is a vector pointing away from the particle.
C) The potential is a negative number; the field is a vector pointing toward the particle.
D) The potential is a negative number; the field is a vector pointing away from the particle.
You have a concave spherical mirror with a 13.3-cm radius of curvature. You place an object on the mirror's axis, 19.7 cm in front of the mirror
A laser is used in eye surgery to weld a detached retina back intoplace. The wavelength of the laser beam is 514 nm, while the poweris 1.5 W. how many photons are emitted by the laser
Calculate the gyrofrequency of an electron in Earth's magnetic field, having a value of ~ 35 A-m-1. Determine the electron density values required to produce a zero refractive index for the case of propagation parllel to Earth's magnetic field at a f..
A beam of parallel rays from a 24 MHz citizens band radio transmitter passes between two electrically conducting (hence opaque to radio waves) buildings located 45.00 m apart. What is an angular width of the beam as it emerges from between the buildi..
A car takes off from rest with a constant acceleration.After 5 seconds it is traveling at 20 m/s. What is the acceleration of the car
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 15.0 m/s due north relative to the water. Illustrate what is the velocity of the boat relative to shore?
After driving a portion of the route, the taptap is fully loaded with a total of 23 people including the driver, with an average mass of 69 per person. In addition, there are three 15- goats, five 3-chickens, and a total of 25 of bananas on their way..
Two friends hold on to a rope, one at each end, on a smooth, frictionless ice surface. What is the magnitude of the angular momentum of the system comprised of the two friends
A roller coaster at the Six Flags Great America amusement park in Gurnee, Illinois, incorporates some clever design technology and some basic physics. What is the radius of the arc of the teardrop at the top
An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. How far (in km) must he now travel to reach base camp
question a juvenile elephant has a mass of 300kg. he wishes to fly using his very large ears. if the air speed on top
At a winter fair a 65.5-kg stunt man is shot from a horizontal cannon that rests at the edge of a frozen lake. The human projectile is cast onto the smooth ice, slides some distance, how many revolutions does the stunt man make
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