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Question: The escape speed from a distant planet is 45 km/s. If the acceleration of gravity on the planet surface is 12.5 m/s2,
Part A: What is the radius of the planet?
Please show all work and explain your methods to find the radius of the planet.
A cylindrical conductor has resistance of R0 = 200 ? (ohms). what's the value of the new resistance in ohms
a positive charge 60 nc is 15 cm from a negative charge 50 nc. the force on one of these charges due to the other is
A 0.335 kg iron horseshoe that is initially at 420°C is dropped into a bucket containing 20.3 kg of water at 22.1°C. What is the final equilibrium temperature (in °C)? Neglect any heat transfer to or from the surroundings. Do not enter units.
The generator in a purely capacitive AC circuit has an angular frequency of 126? rad/s and a maximum voltage of ?Vmax = 129 V. what is the RMS current in the circuit
A 75 g piece of ice at an initially unknown temperature is placed into a glass of 350 g of water sitting at room temperature, What is the specific heat capacity of the unknown metal
When a 50.0-V emf device is placed across two resistors in series, a current of 12.0 A is flowing in each of the resistors. What is the magnitude of the larger of the two resistances
A capacitor is charged with a 12.0V battery and is then connected to a 2.65 H inductor (at t=0sec) to form an oscillator with 12.0 Hz frequency.
A three level laser has energy levels E 1=1.50 eV, E 2=2.50 eV, and E 3=3.50 eV. Level E 2 is the metastable state. What is the lasing wavelength
A roller coaster car goes over a hill at a constant speed of12.0m/s. (a) what radius should the hill have in order for the rider in the car to feel weightless at the top of the hill?
a certain volcano on earth can eject rocks vertically to a maximum height h.a how high in terms of if would these rocks
A flywheel having constant angular acceleration requires 4.40s to rotate through 169rad . Its angular velocity at the end of this time is 110rad/s. find the angular acceleration of the flywheel
In changing the state of a gas adiabatically from an equilibrium state A to another equilibrium state B, how much is the net work done by the system in the latter case
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