Acyclist competes in a one-lap race around a flat, circular course of radius 140m. starting from rest and speeding up at a constant rate throughout the race, the cyclist covers the entire course in 60 s. the mass of the bicycle (including the rider) is 76kg. the magnitude of the net force acting on the cyclist at the finish line is 470 n. if you assume air resistance is negligible, and the net force acting on the bicyclist is just the force of static friction, we assume the force of static friction in the above case is 470 n. 470 n is the magnitude of static friction. based on this, what is the minimum coefficient of static friction (mu-s) between the race track and bicycle?

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

Your starship, the aimless wanderer, lands on the mysterious planet mongo. as chief scientist-engineer, you make the following measurements: a 2.50-kg stone thrown upward from the ground at 14.0 m/s returns to the ground in 5.70 s ; the circumference of mongo at the equator is 2.20×10^5 km ; and there is no appreciable atmosphere on mongo. (a) the starship commander, captain confusion, asks for the following information: what is the mass of mongo? (b) if the aimless wanderer goes into a circular orbit 2.20×10^4 km above the surface of mongo, how many hours will it take the ship to complete one orbit? (c) an unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 44.0 km . to the dismay of scientists on earth, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 23.0 m/s . if nothing is done to correct its orbit, with what speed (in km/h) will the spacecraft crash into the lunar surface?

Frank just graduated from eighth grade. assuming exactly four years from now he will graduate from high school how many seconds does he have until his high school graduation