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Calculate the specific heat of a metal. in J/kg.K, from the following data. A container made of the metal has a mass of 3.6 kg and contains 14.5 kg of water, a 1.8 kg of the metal initially at tempe
An electron is released from rest at a perpendicular distance of 8.2 cm from a line of charge on a very long nonconducting rod. That charge is uniformly distributed, with 6.0 µC per meter. Wha
An isolated conductor of arbitrary shape has a net charge of +9.0 x 10-6 C. Inside the conductor is a cavity within which is a point charge q = +2.5 x 10-6 C. (a) What is the charge on the cavity wall
The electric field just above the surface of the charged drum of a photocopying machine has a magnitude E of 2.3 × 105 N/C. What is the surface charge density on the drum, assuming that the drum
Find the net amount of charge contained in a cube 60 m on edge, with horizontal faces at altitudes of 180 and 240 m. Neglect the curvature of Earth.
How much energy can this capacitor store without breaking down after the gap between its plates is filled with neoprene rubber?
A particle with speed v0 and impact parameter b starts far away from a planet of mass M. (a). Starting from scratch, find the distance of closest approach to the planet. (b) Show that the distance o
They are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.50 10-11 m. What is EPEfinal - EPEinitial, which is the change in the elec
A fully charged battery allows the shaver to be used for its maximum operation time, during which 3.12 1022 of the charged particles pass between the terminals of the battery as the shaver operates.
A fireman 48.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 36.0° above the horizontal. If the speed of the stream as it leaves the hose
Typically, the diameter of the eardrum is about 8.4 mm in humans. When someone speaks to you in a normal tone of voice, the sound intensity at your ear is approximately 1.0 x 10^-6 W/m^2 Question:
An interference pattern is observed on the screen 0.4 m away from the grating but the fringes are not evenly distributed. In some regions on the screen, there are overlapped fringes.
Calculate the de Broglie wavelength of the following: (a) a 1.00g bullet with a velocity of 300 m/s (b) An H2 molecule with a kinetic energy of 3/2 kT at a Temperature of 20.0 K
A vessel of cross section 20 cm2 has at the bottom a horizontal capillary tube of length 10 cm and internal diameter 0.5 mm. It is initially filled with water to a height of 50 cm. Find the time tak
What is the electric field at the center of the square (magnitude and direction)? What is the electric potential at the center of the square? Please show your work.
At highway speeds, a particular automobile is capable of an acceleration of about 1.6 m/s2. At this rate, how long does it take to accelerate from 82 km/h to 113 km/h?
A rifle with a muzzle velocity of 470 m/s shoots a bullet at a target 49.6 m away. How high above the target must the rifle barrel be pointed to ensure that the bullet will hit the target? Neglect a
A soccer ball is kicked from the ground with an initial speed of 19.6 m/s at an upward angle of 33.4°. A player 60 m away in the direction of the kick starts running to meet the ball at the inst
A ball is shot from the ground into the air. At a height of 9.1 m, the velocity is observed to be v = (7.4 i + 6.3 j) m/s, with i horizontal and j upward. (a) To what maximum height does the ball ri
An astronaut is rotated in a horizontal centrifuge at a radius of 5.0 m. (a) What is the astronaut's speed if the centripetal acceleration is 5.0g?
Snow is falling vertically at a constant speed of 8.0 m/s. At what angle from the vertical do the snowflakes appear to be falling as viewed by the driver of a car traveling on a straight road with a
Find the car's position relative to the base of the cliff when the car lands in the ocean
A skier is accelerating down a 30.0° hill at 4.00 m/s2 . (a) What is the vertical component of her acceleration?
How long will it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation change is 305 m?