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Two narrow slits separated by 0.36 millimeter are illuminated by monochromatic light of wavelength 466 nanometers. Find how many bright fringes can be seen on a screen 1.1 centimeter wide located 1.7 meters in front of the slits?
A uniform 7.6 kg ladder is leaning against a frictionless vertical wall, with which it makes a 15 deg angle. how massive a person would make the ladder slip
a horizontal rod 0.200 m long carries a current through a uniform horizontal magnetic field of magnitude 0.067 t that
A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.5 kg and the sign has a mass of ms = 15.9 kg. What is the net force the hinge exerts on the beam
The mass of the blue puck shown below is 20.0% greater than the mass of the green puck. Find the speeds the pucks have after the collision if half the kinetic energy of the system becomes internal energy during the collision
Pendulum Clocks will create a ticking sound every time the pendulum reaches maximum displacement on either side. It is desired to design a grandfather clock which will tick once every side.
A nurse counts 60 heartbeats in one minute. What are the period and frequency of the heart's oscillations
Explain what is the current in the cell during this period? Assume that the gold ions carry one elementary unit of positive charge.
Air is streaming horizontally past a small airplanes wings such that the speed is 50m/s over the top surface and 30 m/s past the bottom surface. the plane has a mass of 300 kg and a total wing area of 5 m^2(both wings).
A planet orbits the sun with a period of 8 years. How far is the planet from the sun
A cable supports a uniformly distributed load. The max tension that the cable can withstand is 41 x 10^6 N. What min length of cable is needed
A lead bullet initially at 12.4oC just melts uponstriking a target. calculate the speed of the bullet upon impact
A transformer has the voltages 121 Vpri and 45 Vsec. What is the current flowing in the secondary
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