Anumber should be rounded up if a it is the first digit b the number after it is between 0 and 4 C the number after it is between 5 and 9 D. it is the last digit Please select the best answer from the choices provided

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?

Acar starts from rest at a stop sign and reaches a velocity of 25 m/s w in 4 seconds. determine the acceleration of the car. question 3 options: a) 6,25 m/s2 b)6.25 m/s c)100 m/s2 d)100 m/s

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?