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A prospector finds a solid rock composed of granite (\rho = 2560 {\rm kg/m^{3}}) and gold. The volume of the rock is 3.45×10?4{\rm m^{3}} , and its mass is 4.01{\rm kg} . Part A What mass of gold is contained in the rock? m_{\rm gold} = {\rm kg} What percentage of the rock is gold by volume?
In a particular region of Earth's atmosphere, the electric field above Earth's surface has been measured to be 147 N/C downward at an altitude of 250 m, Calculate the volume charge density of the atmosphere
To get back to the shuttle, the astronaut unstraps a 10-kg tool kit and throws it away with a speed of 8 m/s. In the script, the astronaut, who has a mass of 80 kg without the toolkit, survives, but is this accurate.
A cylindrical spaceship of length 40.0 m and diameter 8.75 m is traveling in the direction of its cylindrical axis (length). What is the length of the ship, as measured by an Earth observer measured in m
The polarizability of large atoms can be estimated by using the formula for the polarizability of a metal sphere, \(\alpha = 4\pi\epsilon a^{3}\), Estimate the induced dipole moment of an oxygen atom
Equal masses of 0 oC ice and 100 oC steam are mixed together to form water. What is the final temperature of the water
A light-bulb of power 40 Watts is operating with a potential difference of 120 V across it. What is the current and resistance of the filament
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 117-kg laser sensor which measures the thickness of the ice, find the tension in the cable towing the sensor
An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.210 rev/s . The magnitude of the angular acceleration is 0.881rev/s . Both the the angular velocity and angular accleration are directed clockwi..
An RLC circuit with R = 20.4? , L = 355mH , and C = 48.8?F is connected to an ac generator with an rms voltage of 21V, Determine the average power delivered to this circuit when the frequency of the generator is twice the resonance frequency
A current of 15.0 mA is maintained in a single circular loop of 2.40 m circumference. A magnetic field of 0.870 T is directed parallel to the plane of the loop. Calculate the magnetic moment of the loop
A 206 n sign hangs from the end of a 3.30 m long bar. find the two forces exerted by bolts A and B
A thin layer of fluid to be identified by its index of refraction is poured into a very shallow container. what are the possible values for the index of refraction
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