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1. The planet mars hass a mass of 6.42x10^23kg and a radius of 3396km. What escape speed is needed for a space ship leaving the surface of Mars?
2. To help keep his barn warm on cold days, a farmer stores 950kg of solar-heated water ( Cw= 4186 J/kg C, Lf= 3.33x10^5 J/kg) in barrels. How much heat does the water give off as it cools from 30.0 to 0.0 C and freezes completely?
Given the strategic decisions in the case, Classify three leadership actions that the industry would need to be consider to implement the decisions. Explain why these are critical to implementing the strategic decision.
At a certain instant, a ball is thrown downward with a velocity of 8.0 m/s from a height of 40 m. find the time when the balls collide
A 1025 kg car carrying four 78kg people travels over a rough "washboard" dirt road with corrugations 4m apart which causes the car to bounce on its spring suspension.
A wave crest passes an observation point followed by a second crest. The time between crest is a period of 168.818 seconds. If the wave is traveling at a speed of 154.167 m/s, how long are the wavelengths?
For a damped oscillator with a mass of 170g, the spring constant 92 N/m and a damping coefficient of 55g/s, what is the ratio of amplitude of the damped oscillations to the initial amplitude at the end of 22 cycles.
A string is wrapped tightly around the circumference of a wheel with a mass of 1.23 kg and a radius of 0.324 m. What is the moment of inertia of the wheel
Illustrate what is the general direction of the airplane's velocity? east of south, north of west,north of east, or west of south?
a spring has a spring constant of 400 N/m. the spring is compressed 15 cm and a 2 kg ball is placed on the spring in its compressed state. what is the potential energy of the spring in its compressed state
After being struck by the stone, the boat's velocity is 1.9 m/s, due east. Illustrate what is the mass of the boat? Assume the water offers no resistance to the boat's motion.
a child swings a mass on a string in a horizontal circle 1.2 meter off the ground. The string has a length of 0.6 meters, how far will the mass travel before it lands
The average density of the planet Neptune is 1644 kg/m3. The acceleration of gravity on its surface is 11.32 m/s2. Calculate the average radius of Neptune
What is the total negative charge, in coulombs, of all the electrons in a small 1.05{\rm g} sphere of carbon? One mole of C is 12.0{\rm g} , and each atom contains 6 protons and 6 electrons.
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