An astronaut travels to the moon. what is true regarding her mass and weight?

How does convection affect our atmosphere? our layers of earth? our oceans?

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Which statement is true about an object that is moving in a circular motion due to centripetal force, f, when the radius of its circular motion is doubled? the new force then becomes equal to 2f the new force then becomes equal to f the new force then becomes equal to f/2 the new force then becomes equal to f2 the new force then becomes equal to 1/f