What kind of system does not allow matter or energy to enter or exit?

A. Connected

B. Isolated

C. Open

D. Closed

A man pushes a lawn mower with a force of 200 N across 50 meters of his lawn. How much work did the man perform?

A straight wire of length 4.5 cm moves at a constant speed of 5.2m/s perpendicular to its length and a uniform magnetic field. If the induced e. m. f. in a straight wire is 85mV find the magnetic flux density.

What are the si units for average speed?

12) Does the label "centripetal force" ever appear in an FBD?

6. How did a change in voltage affect the use of an electromagnet?

What is the value of g in m/s^2, rounded to one decimal place

There is a naturally occurring electric field near the surface of the Earth whose magnitude is 80√pi V/m. How much energy is stored per cubic meter in this field?

During the Pleistocene, a land bridge connected Alaska and Asia. What could have caused this bridge to from? the ending of an ice age the beginning of an ice age the erosion of the Alaskan coastline the erosion of the Asian coastline

A rock is shot vertically upward from the edge of the top of a tall building. The rock reaches its maximum height above the top of the building 1.60 s after being shot.

Which of the following effects does low nitrogen availability most likely have on the carbon cycle? a. more carbon dioxide is taken up by plants b. carbon dioxide is trapped in the soil around plants c.