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A planet of mass m = 4.95 × 1024 kg is orbiting in a circular path a star of mass M = 5.55 × 1029 kg. The radius of the orbit is R = 7.55 × 107 km. What is the orbital period (in Earth days) of the planet Tplanet?
A 2900 pF air-gap capacitor is connected to a 7.4 V battery. If a dielectric with a dielectric constant of 5.5 is now placed between the plates, how much additional charge will flow from the battery onto the capacitor?
Through a nuclear accident, 410m3 of emergency cooling water at 23C are injected into a reactor vessel where the reactor core is producing heat at the rate of 200 MW. If the water is allowed to boil at normal atmospheric pressure, how long will it ta..
Both systems start from rest, and the direction of the force moves with the system and always points along the 4.00 m rod. What is the angular velocity of each system after 5.28 s.
A certain source of sound radiates uniformly in all directions in air. At a distance of 5m the sound level is 80 dB. The frequency is 440 Hz. What is the displacement amplitude at this distance
Two balls of mass 0.6 kg and 0.8 kg are connected by a low-mass spring. This device is thrown through the air with low speed, what is the total momentum of the device
What is the distance Delta y_max-min between the second maximum of laser 1 and the third minimum of laser 2, on the same side of central maximum.
A circular wave travels outward from the origin. At one instant of time, the phase at r1 = 20.0 cm is 0rad and the phase at r2 = 89.0cm is 3pi rad. What is the wavelength of the wave
The intensity (in W/m2) of one sound is 5.46 times as great as the intensity of another sound. what is the intensity level of the louder sound
A daredevil decides to jump a canyon. Its walls are equally high and 12 m apart. What minimum speed must he have in order to clear the canyon
An eyepiece of 2.1- cm focal length and an objective of 0.34- cm focal length are used in a standard microscope. What power should be marked on the eyepiece
Captain Planet measures the magnetic forces on a proton which is vertically falling at 1996. m/s at the equator, What FORCE would she measure
A thin beam of light enters a thick plastic sheet from air at an angle of 32.0° with the normal and continues in the sheet at an angle of 23.0° with the normal. Obtain the index of refraction of the plastic
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