Why are plate tectonics a theory?

What is one way you can state how you feel?

An astronaut has a mass of 60 kg. what is the astronauts weight on the surface of earth

Identify which type of scientist would use spectroscopy for each purpose. Identification of the composition of the sun and stars: Determination of chemical bonds: Prediction of the efficiency of possible laser materials: Identification of harmful

When a car makes a sharp left turn, what causes the passengers to move toward the right side of the car? a. centripetal acceleration c. centrifugal force b. centripetal force d. inertia

Felipe and marahea where studying friction they did a experiment and placed four blocks on a plastic tray which block will have the least amount of friction A a ice block, B a sponge block, C sandpaper block, or D a plastic block

Which of the following occurs in meiosis that does not occur in mitosis 1 fertilization occur 2 body cells are made 3 sex cells are made 4 cell division occurs

A hot air balloon is hovering in the air when it drops a 40 Kg food package to some lost golfers. If the package is dropped from an altitude of 500 m and air resistance can be neglected, how fast is the package moving when it hits the ground?

you often hear people particularly TV announcers talk about "high rate of speed" what do you think they mean according to the specifics of physics definitions what are they really saying

What is the value of x in the equation Ix - 3y = 30, when y = 15?

32. How much work is done pushing an 80 N box 2 m across ue surtout What work is done? a. 40 J c. 160 J b. 20 J d. 240 J