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Why is a metal spoon easier to heat up than a ceramic cup and When a compass is placed near an electrical circuit and the circuit is turned on, the needle will jump.
A simple pendulum is made from a 0.617 m-long string and a small ball attached to its free end. The ball is pulled to one side through a small angle and then released from rest. After the ball is released, how much time elapses before it attains its ..
Three moles of an ideal monatomic gas are at a temperature of 393 K. Then 2568 J of heat is added to the gas, and 631 J of work is done on it. What is the final temperature of the gas
Assume two charges q and -q are placed at the points (0,0, -d/2) and (0,0, d/2) respectively. calculate the electric flux through the xy-plane
In the ground state of the hydrogen atom, the electron has a total energy of -13.6 eV, Determine its potential energy if the electron is a distance 16a from the central nucleus? Here a is the Bohr radius
What is the electric field strength between the disks? A proton is shot from the negative disk toward the positive disk. What launch speed must the proton have to just barely reach the positive disk?
An excited argon ion in a gas discharge radiates a spectralline of wavelength 450 nm. The transition from the excited to theground state that produces this radiation takes an average time of10^-8 s. What is the inherent width of the spectral lineΔ..
one end of a uniform 4.0 m long rod of weight is supported by a cable. the other end rests against a wall where it is
Consider a 80.0-kg man standing on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.18 m/s in 0.600 s. It travels with this constant speed for the next 5.00 s. The elevator then undergoes a uni..
A disk having mass M and radius R spins about an axis through its center and prependicular to the flat face of the disk at angular velocity. calculate the moment of inertia of the rod about one end
A weather balloon filled with helium gas has a volume of 279 m3, What is the new volume of the balloon
A converging lens has a focal length of f = 22.0 cm. An object is placed 41.0 cm from the lens. Find the size of the image in cm if the object has a height of 4 cm. express answer with one decimal place.
The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0° angle with the ground. Explain how far up the ladder can an 870 N person climb before the ladder begins to slip?
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