An astronaut having a mass of 65 kg is standing on the surface of the moon. The mass of the moon is
7.4 x 1022 kg and the radius is 1.74 x 10 m. What is the gravitational force the astronaut
exerts on
the moon?
I

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.

Which of the following is the largest disadvantage of about half of the electricity in the united states comes from burning