Lea has just ordered a box of "universal" litmus paper. She dips one piece into vial A, and it turns green. She dips another piece into vial B, and it turns red. A pack of papers papers is shown with a scale 1 red, 2 orange-red, 3 orange, 4 pale orange, 5 more pale orange, 6 yellow, 7 yellow green, 8 green, 9 darker green, 10 very dark green, 11 blue, 12 dark blue, 13 purple, 14 dark purple. Which vial, A or B, contains a greater concentration of H+ ions? vial

The correct answer is viral: B

Explanation:

I just did the assignment on edge 2020

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.