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You are an astronaut, and you observe a small planet to be spherical. After landing on the planet, you set off, walk straightahead, and find yourself returning to your spaceship from theopposite side after completing a lap of 25 km. You hold a hammerand a falcon feather at a height of 1.4 m, release them, andobserve them to fall together to the surface in 29.2s. What is the mass of the planet?
A rock is lauched from the moon and travels away from it at a speed of 2/5, Call the event of the rocket's lauching event A, Draw a spacetime diagram of the situation, drawing and labeling the worldlines of the moon
A popgun uses a spring for which k=20 N/cm. How high can the gun shoot a 5.0 g projectile
A soccer player kicks a ball from ground level with an initial velocity of 25 m/s at an angle of 30° above the horizontal. What angle does the velocity vector make with the horizontal
An 9.00-cm-diameter, 330g solid sphere is released from rest at the top of a 1.70-m-long, 20.0? incline. What is the sphere's angular velocity at the bottom of the incline
A 20.0kg light signal hangs from the end of a 7.0m uniform density pole of mass 12.0kg. The pole is free to swivel from the hinge at point A, What is the reaction force (magnitude and direction) at the hinge
A relief airplane is delivering a food package to a group of people stranded on a very small island. What is the velocity of the plane if the pilot successfully drops the package from a horizontal distance, D, equal to 600 m from the site
A rectanglar block of iron 9.68x10^-8 ohms has dimensions 1.20 X 1.60 X 2.50 cm, What is the minimum resistance of the block
An engine absorbs 1.67 kJ from a hot reservoir at 277°C and expels 1.18 kJ to a cold reservoir at 27°C in each cycle, How much work is done by the engine in each cycle
question from amperes law we found that the magnitude of the magnetic field a distance r from a current-carrying wire
When a guitar string is sounded along with a 436 Hz tuning fork, a beat frequency of 5Hz is heard. When the same string is sounded along with a 434 Hz tuning fork, beat frequency is 7.00 Hz. What is the frequency of the string.
A 53 kg woman and a 80 kg man stand 13 m apart on frictionless ice. If they hold on to two ends of a rope, and the man pulls on the rope so that he moves 3m, how far from the woman will he be now.
Calculate the orbital period of Pluto (in yr) from knowledge of G, the mass of the sun (M = 1.99×1030 kg), and the orbital radius of Pluto of 3.96×101A.U. Given that the gravitational force is 5.64×1016 N
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