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An electron is in the first excited orbit of hydrogen, corresponding to n = 2.
(a) Find the radius of the orbit.nm
(b) Find the wavelength of the electron in this orbit.nm
The meaning and the basic applications of Newton's 1st and 2nd laws.
A 3.57 kg block is drawn at constant speed 4.06 m along a horizontal floor by a rope exerting a 7.68 N force at angle of 15 degree above the horizontal. Work out the coefficient of kinetic friction between block and floor.
Consider a small virus having a diameter of 10nm . The atoms of the intracelluar fluid are confined within this "box". What is the ground state energy (in eV) of a sodium ion confined in such a box
A golf ball strikes a hard, smooth floor at an angle of 25.8 ° , What is the magnitude of the impulse applied to the golf ball by the floor
The largest building in the world by volume is the Boeing 747 plant in Everett, Washington. What is its volume in cubic feet
A ray of light strikes the midpoint of one face of an equiangular (60°-60°-60°) glass prism (n = 1.5) at an angle of incidence of 32.5°. find the angles of reflection at the surfaces
The magnetic field inside an air filled solenoid 36cm long and 2cm in diameter is 0.8T. Approximately how much energy is stored in this field
A small bird's wings can undergo a maximum displacement amplitude of 4.8 cm (distance from the tip of the wing to the horizontal). what is the oscillation frequency of the wing tips
There are two protons of a helium atom seperated by 1.00e-15m, If the protons were allowed to move, what would be their initial acceleration due to the electric force between them
A 2.00 g plastic bead charged to -4.00 nC and a 4.00 g glass bead charged to +8.00 nC are 2.00 cm apart, find the initial accelerations of the plastic bead
A grinding wheel is in the form of a uniform solid disk of radius 6.93 cm and mass 1.97 kg. how many revolutions does it turn while accelerating
What is the percentage difference between the speeds of red light and blue light in flint glass, What is this percentage difference in diamond
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