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A 70,000 kg spaceship wants to orbit a tiny black hole at a height of 10,000 m. The force of gravity of the black hole on the spaceship is 50,000 N. What speed should the captain tell the computer to set the spaceship for?
Consider a circuit with two resistors in parallel; R1=10 Ohm and R2=5 Ohm, Calculate the total current flowing through the battery
A converging lens is placed 20.0 cm to the right of a diverging lens of focal length 5.0 cm. Calculate the focal length of the converging lens
A satilite of mass 5500 kg orbits the Earth and has a period of 6600s. Dertermine the radius of its circular orbit and the altitude of the satelite
A wire carries a current of 0.665 A. This wire makes an angle of 55.5° with respect to a magnetic field of magnitude 4.92E-5 T, What is the length of the wire
school yard teeter-totter with a total length of 5.50 and a mass of 36.00 is pivoted at its center. A 19 child sits on one end of the teeter-totter. Where should a parent push vertically downward with a force of 250 in order to hold the teeter-tot..
In a college homecoming competition, eighteen students lift a sports car. Though holding the car off the ground, each student exerts an upward force of 390 N. What is the mass of the car in kilograms? What is its weight in pounds.
Consider a long wire that makes a right angle (90°) bend. If the wire carries a current I, what is the magnetic field at point A
A large power plant converts 1000 kg of water to steam every second to run its generators. Compute the amount of heat required each second just to vaporize the water, assuming this is done at 100 C. What is the power input in megawatts for this pu..
Albert is pulling a 25.0 kg block up a hill which has an angle of ï?± = 15.50, calculate the work done by each force listed, and thus find the total work done on the block
Two equally charged particles, held 22.4 cm apart, are released from rest. The initial acceleration of the first particle is observed to be 4.0 m/s2 and that of the second particle is 6.0 m/s2. If the mass of the first particle is 3.40 x 10-7 kg, ..
Two identical particles of mass m approach each other at equal and opposite speeds, v. How much kinetic energy was lost in this collision
A person who weighs 715 N is riding a 98-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. find the area of contact between each tire and the ground
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