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A 4.7 meter long, 450 kilogram steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70 kilogram construction worker stands at the far end of the beam. Obtain what is the magnitude of the torque about the point where the beam is bolted into place?
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 5.0. Calculate the intial kinetic energy of the system
a ocean waves move toward the beach with a speed of 8.90 ms and a crest-to-crest separatiion of 15.0 m. you are in a
A radio can be tuned into a particular station frequency by adjusting the capacitance in an L-C circuit. What is the inductance L of a coil connected to this capacitor if the oscillation frequency of the L-C circuit is 1.69MHz
two containers are at the same temperature. the first contains gas with pressure p1 molecular mass m1 and rms speed
the index of refraction for red light in water is 1.331 and that for blue light is 1.340. a ray of white light enters
A 200g ball on a 60 {cm}-long string is swung in a vertical circle about a point 200 {cm} above the floor.
Consider a protostellar cloud with temperature T=15K and radius R=4000AU. At what wavelength will the cloud emit the most radiation
how much heat in kcal must be added to 0.60 kg of water at room temperature 20degc to raise its temperature to
three 0.04 kg particles have been glued to a rod of length L = 13 cm and negligible mass and can rotate around a perpendicular axis through point O at one end. How much work is required to change the rotational rate
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 32000 V. find the electron speed just before the electron strikes the screen
What is Newtons Version of Keplers Third Law
The reactance of a capacitor is 11.9 kOhm at a frequency of 2.4 kHz. What is the capacitance in nano-farads
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