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If a hydrogen atom in its ground state is illuminated with em radiation of wavelength 97.44 nm, what is the highest state the electron can be promoted by this radiation?
A proton with v = 322 m/s is moving through a region in which the magnetic field is B = 2.2 T, what angle does the protons velocity make with B
The isotope Po (A-218 Z-84) can decay by either alpha or beta emission. What is the energy release in each case
A wire of length L = 15 is bent into a semi circle . If the total charge on the wire is -45nC, determine the electric field at the center point of the semicirlce.
A projectile is projected from the origin with a velocity of 25.0 m/s at an angle of 50.0 degrees above the horizontal. What is the time of maximum height of the projectile? A.)2.03 s B.)3.45 s C.)1.95 s D.)2.67 s E.)3.01 s
Suppose the shuttle increases its speed so that it has a length of 36.1 m when viewed by a stationary observer. How long would it take to complete one orbit
A capacitor is charged to a potential of 12.0 V and is then connected to a voltmeter having an internal resistance of 3.50M%u03A9. What is the time constant of the circuit
Two charged objects experience a mutual repulsive force of N. If the charge of one of the objects is reduced by a factor of and the distance separating the objects is increased by a factor of , what is the new force?
A step-down transformer produces a voltage of 6.0V across the secondary coil when the voltage across the primary coil is 140V, What voltage appears across the primary coil of this transformer
A 1.85m diameter wagon wheel makes one revolution in 3.45s. What is the tangential speed of a point in it's rim
Consider a fluorescent molecule where the electron that participates in fluorescence has ground state energy of -4.6 eV. what wavelength photon is given off
Two crates, of mass 75.0 kg and 109 kg, are in contact and at rest on a horizontal surface. A 732 N force is exerted on the 75.0 kg crate. What is the force the each crate exerts on the other.
During a recent thunderstorm the wind was blowing past your roof at 40 m/s. Assuming that the density of air is 1.20 kg/m^3, What is the net force experienced by the roof
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