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A cannon fires a shell straight upward; 1.9 s after it is launched, the shell is moving upward with a speed of 16 m/s. Assuming air resistance is negligible, find the speed (magnitude of velocity) of the shell at launch and 4.9 s after the launch. (a) at launch m/s (b) 4.9 s after the launch m/s
A laser emitting light of wavelength 534 nanometer is incident on a diffraction grating. Find the maximum number of lines per centimeter for which the m=3 principal maximum will be visible
What is the resulting angular speed, wf, of the platform and By how much is the kinetic energy of the system increased? (Think about where this increase in energy comes from!)
Red light of wavelength 665.9 nanometer produces photoelectrons from a certain material. Evaluate what is the material work function
A pendulum is constructed from a thin, rigid, and uniform rod with a small sphere attached to the end opposite the pivot. This arrangement is a good approximation to a simple pendulum (period =3.72 s), because the mass of the sphere (lead) is much gr..
a point particle with charge q 52 microc is placed at a corner of a cube of edge a 7.8 cm. what is the flux through a
a transformer has 720 turns in the primary coil and 40 turns in the secondary coil.a if an ac voltage of 120 v is
Two plates separated by a distance 18.3 mm are charged to a potential difference of 7.25 volts, Using the concept of work-energy, calculate the change in kinetic energy
the pressure change outside a house is +10.00mmHg. the roofhas two halves, each with the area of 61.045m^2, what is the magnitude and direction of the net force
A block with mass m1=2.00 kg rests on a frictionless table. It is connected with a light string over a pulley to a hanging block of mass m2=4.00 kg. What is the angular speed of the pulley at this time
A Boeing 747 "Jumbo Jet" has a length of 59.1 m. The runway on which the plane land intersects another runway, the width of the intersection is 24.5 m. How much time is needed for the plane
What happens to guitar strings turning that changes the frequency of the vibrations? Explain how it works? which physical parameter of a guitar string must the player change to get various tones?
A very large nonconducting plate lying in the xy-plane carries a charge per unit area of 10s. A second such plate located at z = 5.00 cm and oriented parallel to the xy-plane carries a charge per unit area of -1s. Find the electric field for the f..
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