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At some instant the velocity components of an electron moving between two charged parallel plates are Vx=1.5x10^5m/s and Vy=0.30x10^m/s. If the electric field between the plates is given by E = j1.
What would happen to the speed of sound in air if the atmosphere were mostly argon rather than nitrogen? Explain.
Lightning rods are used to protect houses and barnes from lightning; the lightning current runs through the copper rather than through the building. Why. Why should the end of the rod be rounded?
If it is not uniform, how is it distributed? Is the electric field inside the sphere still zero ? In each case justify your answers.
A certain region of space bounded by an imaginary closed surface contains no charge. Is the electric field always zero everywhere on the surface? If not, under what circumstances is it zero on the s
A pilot flies her route in two straight-line segments. The displacement vector A for the first segment has a magnitude of 230 km and a direction 30.0o north of east.
What is the average force acting on Superman that gives his upward acceleration?. In determining the initial velocity, ignore the distance superman travels during his initial acceleration stage. Als
What are the three longest wavelengths for standing waves on a 300-cm-long string that is fixed at both ends?
With the power supply disconnected, the dielectric material is removed and the potential difference between the plates is measured to be 400 V. What is the dielectric constant of the material that w
The electric potential at a position located a distance of 22.8 mm from a positive point charge of 8.00×10-9C and 13.9 mm from a second point charge is 1.34 kV. Calculate the value of the second
A 117-cm-long, 3.00g string oscillates in its n = 3 mode with a frequency of 180Hz and a maximum amplitude of 5.00mm. What is the wavelength in the string? What is the Tension in the string?
Conducting sphere X is initially uncharged. Conducting sphere Y has twice the diameter of sphere X and initially has charge q. If the spheres are connected by a long thin wire, which of the followin
Two uncharged spherical conductors are separated by a long distance. Sphere A of radius R1 = 8cm is charged with Q1 = +6µC while sphere B of radius R2 = 2cm is charged with Q2 = +4µC. (
The direction of radiation pressure of light from the sun is A) toward the sun. B) is in the direction of the electric field, which is perpendicular to the direction in which light travels. C) away
A golf ball is struck with a five iron on level ground. It lands 92.6 away 4.20 later. What was (a) the direction and (b) the magnitude of the initial velocity?
A car with an initial velocity of 4.0m/s accelerates at a rate of 2.0 m/s^2 for 10.0s. How far does the car travel during this time?
A parallel-plate capacitor having plates 5.8 apart is connected across the terminals of a 12 battery. Describe the location of the equipotential surface that is at a potential of 7.0 relative to the
Find the minimum force that your hand can exert on the small block to keep it from sliding down against the large block.
If the maximum mass that can be used before the rope breaks is mmax = 1.34 kg, what is the maximum tension the rope can withstand? (Assuming that the mass is still released from the horizontal.)
String A is stretched between two clamps separated by distance L. String B, with the same linear density and under the same tension as string A, is stretched between two clamps separated by distance
An antelope is at a distance of 20.0 m from a converging lens of focal length30.0cm. The lens forms an image of the animal. If the antelope runs towards the lens at a speed of 4.90m/s, what is the s
The separation between adjacent principal maxima for grating A is 2.7 cm, and for grating B it is 3.2 cm. Grating A has 2398 lines per meter.
The temperature of the air at the surface is 20C, and the air's temperature 145 m down is 7.6C. How high does the sea water rise in the bell when the bell is submerged?
A 6.00 capacitor that is initially uncharged is connected in series with a 4500 resistor and a 506emf source with negligible internal resistance. Just after the circuit is completed, what is the vo
A vertical cylinder of cross-sectional area 0.06 m2 is fitted with a tight-fitting, friction- less piston of mass 5.4 kg. If there are 5 mol of an ideal gas in the cylinder at 316 K, determine the h