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An electron makes a transistion from the third energy level to the lowest energy level in a box of width .1nm. What is the wavelength of the emitted photon? Compare this wavelength associated with the transition from the third level to the ground state level hydrogen. (The ground state energy of hydrogen is -13.6 eV.)
What are the magnitudes of the (a) impulse and (b) average force on the passenger during the collision? If the passenger were to jump upward with a speed of 6.00 m/s relative to the cab floor just before the cab hits the bottom of the shaft, what ..
What is the radius of a hydrogen-filled balloon that would carry a load of 3700 N (in addition to the weight of the hydrogen) when the density of air is 1.29 kg/m3
Two workers are trying to move a heavy crate. One pushes on the crate with a force , which has a magnitude of 485 newtons and is directed due west.
The cross-sectional area of the aorta is initially 4 cm2. Though a single capillary is very small, the total cross-sectional area of all the capillaries fed by the aorta is 6000 cm2, over half a square meter
An aluminum container which has a mass of 0.350 kg holds 0.70 kg of water. The water and container are both at 45.0°C. How much ice is required
Two charges, -2.2 microCoulombs and -4.8 microcoulombs, are located at (-0.65m, 0) and (0.65,0), respectively. compute the location of the point where the electric field is zero
A damped mass-spring system oscillates at 275-Hz. The time constant of the system is 2.0 s. At t = 0, the amplitude of oscillation is 3.20cm and the energy of the oscillating system is then 32 J.
A 0.30 kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20 kg puck that is initially moving along the x axis with a velocity of 1.8 m/s. Find the fraction of kinetic energy lost in the collision
a parallel-plate capacitor is constructed using a dielectric material whose dielectric constant is 3.00 and whose
What is the initial conditions such that an underdamped harmonic oscillator will immediately begin steady-state motion (that is, the attractor motion) under the time-dependent driving f(t)=A .cos(wt). Express answer in terms of A, w, wo ,and betta.
A planet has a radius of 2.69 x 10^7 m and a mass of 3.06 x 10^25 kg. It orbits its sun at 1.15 x 10^11 m (assume a circular orbit) and the period of its orbit is 6.34 x 10^7 s. The mass of its sun is 9.22 x 10^31 kg. The radius of the sun is 1.50..
What is the electric field at a point midway between a -7.32uC and a +6.69uC charge 8.78 cm apart? Take the direction towards the positive charge to be positive. Assume no other charges are nearby
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