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An object is placed 10.0 cm in front of a mirror. What type must the mirror be to form an image of the obect that is 2.00 m away from the mirror? What is the magnification of the image?
A nonconducting sphere of radius 7.00 cm carries a uniform volume charge density ? = 430 nC/m^3 What is the total charge of the sphere? Find the electric field at the following radii.
A child holds a candy bar 15.5 cm in front of the convex side-view mirror of an automobile. The image height is reduced by one-half. What is the radius of curvature of the mirror?
A thin nonconducting spherical shell of radius 6 cm carries a uniform surface charge density s = 8 nC/m^2. (a) What is the total charge on the shell? (in nc)
A small loop of wire of radius 1.7 is placed at the center of a wire loop with radius 27. The planes of the loops are perpendicular to each other, and a 6.0 current flows in each. a. Estimate the ma
A small convex mirror placed at the 20.0 cm position forms a final image at the 10.0 cm point. What is the radius of curvature of the convex mirror?
They each hear a frequency greater than 512 hz as the fork moves toward them; the difference in the frequencies they hear is 6.84 hz. Determine their respective distances below the overpass. The spe
(a) At the top of the hill, what is the normal force (using the negative sign for the downward direction) FN on the car from the track if the car's speed is v = 9.7 m/s? (b) What is FN if v = 18 m/s
The density of air is 0.48 kg/m3 at 8.3 km and 0.72 kg/m3 at 4.15 km. Assume that the airplanes have the same effective cross-sectional area and drag coefficient C.
A woman is pushing a sofa at constant speed of 1.0 m/s on a horizontal surface. She exerts a force of 80 N in the direction of the motion. a) How can the sofa move at constant speed without Newton's
A pea shooter can shoot a pea with a muzzle velocity of 8.25 m/s2 suppose the pea shot out horizontally with initial velocity from height = 1.48m above the ground. How far out along the ground will i
A particle is confined to a three-dimensional box that has sides L1, L2 = 2L1, and L3 = 3L1. Give wave function for the fifth excited state. (There are only five states that have energy levels below
A 15KW electric motor provides power for an elevator of a building. What is the minimum time needed for the elevator to rise 30 meters to the sixth floor when its total mass, when loaded, is 900Kg?
An insulating solid sphere of radius a has a uniform volume charge density and carries a total positive charge Q. Calculate the electric field at a) a point outside the surface, and b) at a point
Two infinitely long, straight wires are parallel and separated by a distance of 1.30 meters. They carry currents in the same direction. Wire 1 carries four times the current that wire 2 carries.
The magnetic field produced by the solenoid in a magnetic resonance imaging (MRI) system designed for measurements on whole human bodies has a field strength of 9.0 T, and the current in the solenoi
A coil carries a current and experiences a torque due to a magnetic field. The value of the torque is 91.5% of the maximum possible torque. (a) What is the smallest angle between the magnetic field
The magnitude of the net magnetic force experienced by the two-wire unit is 3.13 N. What is the current I?
When the electric field is turned off, the charged particle travels on a circular path whose radius is 4.05 cm. Find the charge-to-mass ratio of the particle.
Determine the spatial separation between the two isotopes after they have traveled through a half-circle.
To what value must the speed v of the rod be adjusted to reestablish the emf induced between the ends of the rod at its initial value?
What is the ratio of n(h)/n(0) of the density n(h) of molecules at height h to the density n(0) of molecules at height 0 ? Hint: use Maxwell-Boltzmann statistics and consider the gravitational poten
An electron traveling at 471 m/s enters a 3 T magnetic field. The angle between the velocity and the field is 142o. Find the radius of the resulting circular path.
Suppose that you wish to fabricate a uniform wire out of 1.10 g of copper. If the wire is to have a resistance R = 0.800 , and if all of the copper is to be used.
Tarzan swings on a 33.0 m long vine initially inclined at an angle of 39.0° with the vertical. (a) What is his speed at the bottom of the swing if he starts from rest?