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The radius of a black hole is the distance from the black hole's center at which the escape speed is the speed of light.
A. What is the radius of a black hole with a mass five times that of the Sun?
B. At what radius from the center of the black hole in part (a) would the orbital speed be equal to the speed of light?
C. What is the radius of a black hole with the same mass as that of the Earth?
Two 95.0W (120 V) lightbulbs are wired in series, then the combination is connected to a 120V supply. How much power is dissipated by each bulb
Matthew pulls his little sister Sarah in a sled on an icy surface (no friction) with a force of 60 N at an angle of 600 upward from the horizontal. Find acceleration of the sled
Two weights are connected by a very light flexible cord that passes over a 30 frictionless pulley of radius 0.100. The pulley is a solid uniform disk and is supported by a hook connected to the ceiling. One weight is 75N and the other is 125 N.
What is the direction of proton after the collision? What is the direction of carbon atom after the collision.
On a spacecraft two engines fire for a time of 578 s. One gives the craft an acceleration in the x direction of ax = 5.33 m/s2, Calculate the magnitude of the initial velocity
Calculate the frequency and period of a pendulum of mass 10 kg and a) length .5 meters, b) length 5 meters.
Two insulated wires, each 2.94 m long, are taped together to form a two-wire unit that is 2.94 m long. One wire carries a current of 8.36 A, What is the current I
Compute the rms speed of a nitrogen molecule at 16.0 °C. At what temperature will the rms speed be half that value
The diagram below shows a block (B) resting in equilibrium on a spring of stiffness k [N/m] and damper of damping constant c [Ns/m]. What is the steady-state deflection d of the system
When a hammer strikes a nail, it is compressed along its length. What is the impulse imparted to the hammer
A car is traveling along a straight road at a velocity of +34.0 m/s when its engine cuts out. For the next ten seconds, the car slows down, and its average acceleration is a1.
An air conditioner connected to a 120 V rms ac line is equivalent to a 14.9 ? resistance and a 1.39 ? inductive reactance in series. calculate the impedance of the air conditioner
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