If two tiny identical spheres attract each other with a force of 3 n when they are 25 cm apart, what is the mass of each sphere? a. 5,302 kg
b. 53,020 kg
c. 230 kg
d. 1.7 kg

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?