Increase of greenhouse gases is warming the oceans and melting sea ice at the poles. this causes a change in climate. which three earth spheres interact in this process?
a. atmosphere, biosphere, and cryosphere
b. biosphere, cryosphere, and geosphere
c. geosphere, cryosphere, and biosphere
d. hydrosphere, cryosphere, and atmosphere

Order the sequence of ideas that lead to marie curies discovery of radioactive elements number the events in chronological order starting with the oldest

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.