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Starting at a distance of 1.88 m and moving radially outward, how many of the additional equipotential surfaces are crossed by the time the electric field has shrunk to one-half of its initial value
The plates are separated by a distance of 1.2 cm, and the electric field within the capacitor has a magnitude of 2.7 x 106 V/m. What is the kinetic energy of the electron just as it reaches the positi
The work done by the electric force as the test charge moves from surface A to surface B is WAB = -8.2 x 10-9 J. Find rB.
Two square, oppositely charged conducting plates measure 19 on each side. The plates are close together and parallel to each other. They each have a total charge of +4.6 and -4.6 , respectively. A)
What must be the potential difference across the plates of the capacitor filled with a dielectric so that it stores the same amount of electrical energy as the empty capacitor?
There is a point on the x-axis between the two charges where the electric field is zero. A) Is that point left of the origin, at the origin, or right of the origin? left of the origin at the origin
An electrically neutral thin, square metal slab, measuring 4.80 on a side, is placed in a uniform external field that is perpendicular to its square area. If the external field strength is 1250 , wh
Will the time interval between the instants at which they hit the ground be smaller than, equal to, or larger than the time interval between the instants of their release? Explain
If we construct a lens with this radius of curvature on one side, a plane surface on the other, and a refractive index of 1.37 (index of the cornea), what power lens do we obtain? (this calculation
An object is 1m from a screen. at what points may a 0.05-m focal length lens be placed so as to produce a sharp image on the screen? what are the corresponding magnifications?
A golfer hits a shot to a green that is elevated 2.80 m above the point where the ball is struck. The ball leaves the club at a speed of 17.7 m/s at an angle of 41.0? above the horizontal. It rises
A science-fair radio uses a homemade capacitor made of two 35cm X 35cm sheets of aluminum foil separated by a 0.30-mm-thick sheet of paper. Assume dielectric constant of paper is 3.0. What is its ca
Determine the effect of nuclear mass on the first line of the Balmer series of hydrogen by CALCULATING ITS WAVELENGTH SHIFT for deuterium and tritium.
For alpha particles of energy 7.68 MeV scattered from a platinum foil two microns thick, find: (a) the collision diameter, (b) the differential scattering cross section, and (c) the fractional numbe
A bullet is fired from a rifle that is held 1.59 m above the ground in a horizontal position. The initial speed of the bullet is 1097 m/s. Calculate the time it takes for the bullet to strike the gr
A ceramic coffee cup with m=0.113 kg and ccup=1090 J/(kg.°K) is initially at room temperature (24°C). If 225 g of 80.3°C coffee and 12.2 g of 5°C cream are added to the cup, what is
During a circus performance, a 74.9-kg human cannonball is shot out of an 18.6-m-long cannon. If the human cannonball spends 0.865 s in the cannon, determine the average net force exerted on him in
One gives the craft an acceleration in the x direction of ax = 5.13 m/s2, while the other produces an acceleration in the y direction of ay = 7.28 m/s2. At the end of the firing period, the craft ha
At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. What is the vertical height difference between the two climbers?
A 2 Kg block is pushed from rest on a horizontal friction-less table at an angle of 37 degrees by a force of 15N. Find the acceleration of the block. Please explain with step by step solution.
After the RCS thruster is turned off, find (a) the magnitude and (b) the direction of the vehicle's velocity relative to the space station. Express the direction as an angle (in degrees) measured fr
The ball leaves the club at a speed of 17.7 m/s at an angle of 36.0? above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air resistance, find the speed of
(a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 27.9 ° with respect to the ground, what is the component of her acceleration that is paral
The ball remains in contact with the kicker's foot for 0.0593 s, during which time it experiences an acceleration of 445 m/s2. The ball is launched at an angle of 48.2° above the ground. Determi
Compute the fan's angular velocity magnitude after time 0.199 has passed. Express your answer numerically in revolutions per second. I figured out a and got .467 rev/s and i know thats correct.