What does "muscles work in opposing pairs" mean?

A copper wire has area 2mm2 carries current 10A. how many electrons pass through given area in one second?

Which element is metalloid

A student wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. To test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil.

A temperature of 34 fereheight is equal to blank kelvin

If all the forces acting on a book are balanced

A superhero flies 285 m from the top of a tall building at an angle of 35◦ below the horizontal. What is the horizontal component of the superhero's displacement?

How does a substance's temperatura chanté when the average kinetic energy of its particles increases? When it decreases?

Because the moon rotates once for each revolution around Earth, Choose one answer. a. you see some phases more than others. b. a different side of the moon faces Earth each day. c. you never see the far side of the moon.

Planet A takes 1 year to go around its star at an average of 1 A. U. distance. Planet B is 4 A. U. from the star. Calculate how long Planet B takes to orbit.

Average mass of a toy car (small, hot wheels) ?