A) Which of the following is required when attaching a gauge set to check system pressures?Release a small amount of refrigerant to check for contamination. B) Have manual or self-sealing valves on the ends of the gauge set hoses to minimize any release of refrigerant.
C) Recover refrigerant and recharge to specifications even if no repairs are needed.
D) Use hoses that are 3 feet or longer.

answer: a ball

explanation: because it will bounce

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.

i think it's 35 meters