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A capasitor consists of two square plates, 6.5 on a side, separated by a 1.5 air gap. How much energy would be stored in the capacitor if a mica dielectric is placed between the plates? Assume the m
Write down the boundary conditions that must be satisfied by the wavefunctions. Write down the expressions that determine the transmission and reflection coefficients
A 98.0 N grocery cart is pushed 12.0 m along an aisle by a shopper who exerts a constant horizontal force of 40.0 N. If all frictional forces are neglected and the cart starts from rest, what is the
The elastic rope obeys Hooke's Law. Find how much the rope is extended beyond its unloaded length when the performer hangs at rest.
A river flows due south with a speed of 2.00 m/s. A man steers a motorboat across the river; his velocity relative to the water is 4.20 m/s due east. The river is 800 m wide. How far south of his st
The gas is heated to 363 K and some is allowed to escape from the can so that the remaining gas reaches atmospheric pressure. The cap is now tightened, and the gas is cooled to 298 K. What is the pr
In a Young's double-slit experiment the separation y between the first-order bright fringe and the central bright fringe on a flat screen is 0.0200 m, when the light has a wavelength of 465 nm. Assu
What is the velocity of the exhaust relative to the solar system? and At what rate was the exhaust ejected during the firing? I have no idea how to even start this problem. Any help would be great.
An infinitely long line of charge has a linear charge density of 3.50×10^-12 C/m. A proton is at distance 18.0 cm from the line and is moving directly toward the line with speed 3000 m/s. How
A silver wire 2.6 mm in diameter transfers a charge of 420 C in 80 min. Silver contains 5.8 times 10^{28} free electrons per cubic meter. What is the current in the wire?
An 9.20 ball, hanging from the ceiling by a light wire 140 long. Find the tension in the wire just after the collision.
The emf induced in a loop rotating in a uniform magnetic field is largest when the normal to the plane of the loop makes an angle of _______ with the field.
Find the flux of the Earth's magnetic field of magnitude 5.00 multiplied by 10-5 T when the field makes a 20.0° angle with the normal to the plane of the loop
The sound intensity level of a person speaking normally is about 65dB. What is the minimum number of people speaking simultaneously each with this intensity level, that is necessary to produce a sou
Using energy considerations, determine how far up the incline the block moves before it stops if there is no friction between the block and the ramp.
A skier of mass 68 kg is pulled up a slope by a motor-driven cable. How much work is required to pull him 45 m up a 30° slope (assumed frictionless) at a constant speed of 2.5 m/s?
A curve with a 125 m radius on a level road is banked at the correct angle for a speed of 20 {rm m/s}.If an automobile rounds this curve at 30 {rm m/s}, what is the minimum coefficient of static fr
It compresses the spring, then is pushed back in the opposite direction by the spring, eventually losing contact with the spring. How long does the block remain in contact with the spring?
A brick is released with no initial speed from the roof of a building and strikes the ground in 2.70 , encountering no appreciable air drag. How tall is the building? How fast is the brick moving ju
A race car starts from rest on a circular track of radius 455 m. The car's speed increases at the constant rate of 0.480 m/s2. At the point where the magnitudes of the centripetal and tangential ac
Calculate how long the sun would last, in years, if it were to keep radiating at its present power level until all its mass is gone.
A charge of 3.06 uC is held fixed at the origin. A second charge of 3.06 uC is released from rest at the position (1.05 m, 0.506 m). If the mass of the second charge is 2.73 g, what is its speed whe
Ahummingbird is flying in such a way that it is initially moving vertically with a speed of 5.3 and accelerating horizontally at 11. Find the component and the component of the hummingbird's velocity
The woman then starts walking clockwise (when viewed from above) around the rim at a constant speed of 0.53 rad/s relative to Earth. With what angular speed does the turntable rotate?
The flywheel of a gasoline engine is required to give up 550J of kinetic energy while its angular velocity decreases from 790 rev/min to 730rev/min. What moment of inertia is required?