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Planet-X has a mass of 5.28×1024 kg and a radius of 7870 km. What is the First Cosmic Speed i.e. the speed of a satellite on a low lying circular orbit around this planet? (Planet-X doesn't have any atmosphere.) b.) What is the Second Cosmic Speed i.e. the minimum speed required for a satellite in order to break free permanently from the planet? c.) If the period of rotation of the planet is 19.2 hours, then what is the radius of the synchronous orbit of a satellite?
A hypodermic needle is attached to a syringe with a plunger of diameter 1.6 cm. What is the minimum force must be applied to the plunger
A person driving her car at 49 km/h approaches an intersection just as the traffic light turns yellow. She knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection .
At a given instant an 56 mH inductor stored an energy of 89 µJ. What is the current in the inductor at this instant
Suppose the superhero had flown 145 m at a 125° angle with respect to the positive x-axis
The nucleus of the polonium isotope 214^po (mass 214u ) is radioactive and decays by emitting an alpha particle, what is the recoil speed of the nucleus that remains after the decay
Two forces act on an object. A 36-N force acts at 225o. A 48-N force acts at 315o. What would be the magnitude and direction of their equilibrant, What is the acceleration of the spider
A 9.4 cm diameter loop of wire is initially oriented perpendicular to a 2.3 T magnetic field. determine the average induced emf in the loop
A 2150 kg truck is traveling east through an intersection at 1.5 m/s when it is hit simultaneously from the side and the rear. What are their speed and direction just after the collision
A 2-kg book with no initial velocity slides down an inclined plane with an angle of 20 degrees a total of 2 meters. The force of friction does 10 Joules of work, what is the final kinetic energy of the system as the book reaches the bottom of the ..
An 93-g arrow is fired from a bow whose string exerts an average force of 120N on the arrow over a distance of 77cm, What is the speed of the arrow as it leaves the bow
A catapult on a cliff launches a large round rock towards a ship on the ocean below. calculate the speed at which the rock is launched
If the diameter of the fifth circular orbit of the hydrogen atom is 26.5 A, what is the frequency of the reveloution
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