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A hydrogen atom is excited to the n = 11 level. Its decay to the n = 7 level is detected in a photographic plate. Obtain the wavelength of the detected emission?
q1. a 430g block slides along a frictionless surface at a speed of 0.35 ms. it runs into a horizontal massless spring
If the earth rotates with enough speed we would be thrown off of the surface. Determine what would be the length of one day
consider a single cell supporting 300 active users uniformly distributed within the cell and make simultaneous access
A 0.04 kg bullet collides in elastically with a 0.5 kg ballistic pendulum. Before the collision the pendulum was at rest but immediately after collision the pendulum is moving with speed of 13.6 m/s. How fast was the bullet travelling before the coll..
Assuming that the ball's initial velocity was 45° above the horizontal and neglecting air resistance, what does the initialspeed of the ball need to be to produce such a home run if the ballis hit at a point 1.0 m(3.3 ft) above ground level? Assum..
What do we call mineralsthat have the same combinations of elements, but a different arrangement of element?
The dipole moment of the water molecule is 6.1 * 10^-30 C * m. In an electric field, a molecule with a dipole moment will tend to settle into an equilibrium orientation such that the dipole moment is parallel to the electric field
between the poles of a powerful magnet is a cylindrical uniform magnetic field with a diameter of 4.50 cm and a
What minimum force must be applied to the crate perpendicular to the incline to prevent crate from sliding down the incline.
early cameras were little more than a box with a pinhole on the side opposite the film. a what angular resolution would
Two atomic particles approach each other in a head-on collision. Each particle has a mass of 1.54 x 10-25 kilogram. Find the speed of one particle as seen by other particle
A 2.0 kg object is attached to a horizontal spring of force constant k = 4.3 kN/m. The spring is stretched 10 cm from equilibrium and released. Discover its total energy. Discover the total energy of a 2.0 kg object oscillating on a horizontal spring..
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