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A spacecraft is in orbit around a planet. The radius of the orbit is 2.9 times the radius of the planet (which is R = 71483 km). The gravitational field at the surface of the planet is 25 N/kg. What is the period of the spacecraft's orbit? [Hint: You don't need any more data about the planet to solve the problem.]
An object 2.6 cm high is placed 15 cm from the surface of a polished silver sphere of radius 11 cm. Find the location, size, and orientation of the image
q1. potassium iodide has an interplanar spacing of d 0.296 nm. a monochromatic x-ray beam shows first-order
Two identical resistors of R0 = 30 ? are connected head-to-tail. Write an expression for the new length in terms of the old length L.
A brand of earplugs reduces the sound intensity level by 28dB. By what factor do these earplugs reduce the acoustic intensity
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 3.26 x 105 N. What is the work done on the jet by the catapult
We want to design a freeway off ramp that has a radius appropriate for the posted speed. What is the radius of the curved exit ramp such that the car does not skid off the ramp
A converging lens(f1=4 cm) is located 8 cm to the left of a diverging lens (f2= -2 cm). Find the final image formed by the 2 lens system
At large distances, a bar magnet acts like the magnetic dipole created by a current carrying loop. Imagine such a magnet is oriented as shown. What is the magnetic dipole moment of the bar
a 4.0x10^6 ohm resistor is connected in series with a 0.50 microfarad capacitor. What is the change in voltage between t=RC and t=3RC
An object initially at rest explodes and splits into 3 fragments. the first fragment flies off to the west, and the second fragment flies off to the south. what is the direction of the third fragment
An asteroid is discovered heading straight toward Earth at 15km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 min, after which the asteroid is moving at 29degree to its original path at a..
A 5.0V potential difference is applied between the ends of a 0.80mm -diameter, 90cm -long nichrome wire, What is the current in the wire
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