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A shiny metallic Christmas ball ornament 5.10 centimeter in diameter is used as a mirror. Obtain what is the mirror focal length?
A nickel surface is exposed to light of wavelength235 nm. The work function of Ni is 5.1 eV. What is the maximum speed of the photoelectrons emitted from the surface?
A 56.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.24 102 m/s from the top of a cliff 120 m above level ground, What is the initial total mechanical energy of the projectile
The Moon's mass is 7.36x10^22 kg and its assumed circular orbit has radius 3.84x10^8 and a period of 27.3 days. Find the moons kinetic energy.
varying coefficient of friction a box is sliding with a speed of 4.50 ms on a horizontal surface when at point p. it
Some hydrogen gas is enclosed within a chamber being held at 200 degrees C with a volume of 0.025 m^3. What is the final volume of the container
A technician wraps wire around a tube of length 37 cm having a diameter of 8.2 cm. what is the self-induced emf in the solenoid
A cube is constructed of six copper plates joined at the edges by an insulating material. find the electrical potential in the center of the cube
A police car is moving at 38m/sec to catchup with a speeder directly ahead. The speed limit is 29.1 m/sec. How fast is speeder going
a 1.2-kg 10-cm-diameter solid sphere is rotating about its diameter at 69 revmin.a what is its kinetic energy?b if an
An unknown number of moles of an ideal monoatomic gas expand reversibly from Vi = 2.30 m3 to Vf = 3.10 m3, at a constant pressure of 1.99 atm, Find the number of moles of gas
question a block of mass 2 kg travels along a horizontal frictionless surface with velocity 3 ms. the mass collides
suppose a single electron orbits about a nucleus containing two protons 2e as would be the case for a helium atom from
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