A cold air mass and warm air mass are next to each other, not moving. Which type of front occurs?

occluded front

stationary front

warm front

cold front

What is the source of radioactivity for uranium?

What minerals cause the earth magnetism

The Sun exerts a gravitational force of 29.9 N on a rock that's located in a river bed here on Earth. How much gravitational force does the rock exert on the Sun? State your answer with the correct mks units.

A man has power of 90W and mass 60kg runs up a staircase in 40 second. If each step of staircase is 20m high calculate the number of steps

How many General methods of energy transfers are there give two examples of each

A dc generator is the same as a (n) a. electric motor. b. ac generator. c. armature. d. electric current.

Which of the following best describes scientific knowledge A.) Durable B.) Absolute and never changing C.) Frequently varies

Beth made the chart shown. A 2-column table with 1 row. The first column labeled X has entries Wall clock, T V remote control, Portable music player. The second column labeled Y has entries Refrigerator, Table lamp, Hair dryer.

Which sentence states Newton's third law? If two objects collide, each object exerts a force in the same direction as the other. If two objects collide, each object exerts a force equal to and in the opposite direction of the other.

Why did the chicken cross the road.