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You are in the neighborhood of a star (radius of 700,000 kilometers) which has emitted so many protons ("solar wind") during its life, that it now possesses a huge net negative charge of 6 x 10^6 C (surface charge). You did not know the fact and launched a probe (100 kilograms) on an orbit around the star (circular orbit, with a radius of 100 million kilometers). Your probe is protected against heat, but not against being polarized by influence. For short, your probe has an extra (positive) charge of 1000 C. The new attraction force was not foreseen previously, and you must compensate it somehow, because otherwise the probe will fall into the star.One proposition is to use temporarily the engines of the probe against the star attraction, until you find a permanent solution.
A) What power must the engines of the probe use in order to maintain the orbit?
A uniform rod of mass M and length L is sitting on a frictionless table. Describe the subsequent motion of the rod
A 35.0-cm-diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. evaluate the magnitude of the electric field
an electron in an x-ray machine is accelerated through a potential difference of 1.00 X 10^4 V, What is the kinetic energy of the electron
A light bulb is placed 22.2 cm in front of a concave mirror. Calculate the focal length of the concave mirror
Compute the horizontal distance the ball
Nichrome wire of cross-sectional radius 0.782 mm is to be used in winding a heating coil, find the length of wire you must use to wind the coil
Suppose a 65 kg person stands at the edge of a 6.5 m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1850 kg m2. Calculate the angular velocity of the turntable
A runner covers one lap of a circular track 40.0m in diameter in 63.5s, what was her average speed for that half-lap
A snow maker at a resort pumps 260 kg of lake water per minute and sprays it into the air above a ski run. how much heat does the snow-making process release each minute
A horizontal power line of length 52 m carries a current of 1.4 kA, find direction of the magnetic force on the power line
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 445 Hz, calculates the speed of the train
A particle with a mass of 6.64*10^-27kg and a charge of 3.20*10^-19Cis accelerated from rest through a potential difference of 2.45*10^6V. calculate the radius of the path inside the magnetic field
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