Suppose the space shuttle is in orbit 300 km from the earth's surface, and circles the earth about once every 90
minutes. find the centripetal acceleration of the space shuttle in its orbit. express your answer in terms of g, the
gravitational acceleration at the earth's surface. (hint: the earth's radius is 6.4 x 10 m.]

Which statement best describes resistance? resistance is a. how well a current will flow in a material and is measured in volts. b. how well a material conducts an electrical charge and is measured in ohms. c. the ability of a material to attract a positive charge to create a current. d. the ability of a material to repel neutral charges and is measured in ohms.

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.