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An extra solar planet's orbit has a semi major axis of 21.1 AU. The eccentricity of the orbit is 0.010. Find what is the periapsis distance (the planet minimum distance from the star it is orbiting)?
A small piece of dust of mass m = 1.3 mu or micro g travels horizontally through an electric air cleaner in which the electric field is 478 N/C. What is the charge on the dust particle
An explosion of a 10.0-kg bomb releases only two separate pieces the bomb was initially at rest and a 4.00-kg piece travels westward at 100 m/s immediately after the explosion. What are the speed and direction of the other piece
A balloon is initially stationary and full of air. The air in the balloon has a mass of 2 g. What speed does the balloon have
A car travels up a hill at a constant speed of 37 km/h and returns down the hill at a constant speed of 66 km/h. Calculate the average speed for the whole trip.
A spring-loaded pellet gun is designed to fire 3.30 g projectiles horizontally at a speed of47.9 m/s. What maximum force is required to load the gun
A sailboat race course consists of four legs, defined by the displacement vectors , , , and , as the drawing indicates. find the distance of the fourth leg and the angle
A person with a mass of 71.6 kg and a volume of 0.089 m3 floats quietly in water. find the volume of the person that is above the water
a uniform spherical shell of mass m 3.9 kg and radius r 9.3 cm can rotate about a vertical axis on frictionless
A proton moves with a speed of 2.4 106 m/s horizontally, at the right angle to a magnetic field. What magnetic field strength is required to just balance the weight of the proton and keep it moving horizontally.
A rifle with a weight of 30 N fires a 6.0-g bullet with a speed of 200 m/s. find the recoil speed of the man and rifle
two positive charges of 1.9e-10 c are placed on the x axis at distances 48 cm and -48 cm from the origin respectively.
a person exerts a force of 28n on the end of a door 84cm wide. what is the magnitude of the torque if the force is
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