Find the period of the earth having a mass of 6 x 10²⁴ kg, if it rotates about the sun in an orbit of radius 20000km. (a) 7.803hrs (b) 7.703hrs (c) 7.903hrs (d) 7.603hrs (e) none of
the above​

Aplanet of mass m 6.75 x 1024 kg is orbiting in a circular path a star of mass m 2.75 x 1029 kg. the radius of the orbit is r 8.05 x107 km. what is the orbital period (in earth days) of the planet tplanet?

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?