Which of the following are mechanical waves?

A. Waves that travel in empty space

B. Sound and ocean waves

C. Light waves

D. X-rays

Hey how are you today

Your answer would be B sound and ocean waves.

The reason why of course is because mechanical waves are waves that travel through matter and not empty space (as for light travels through empty space and is therefore not a machanical wave). and x-rays are a spectrum of light so they aren't mechanical waves eather.

Hope it helped

answer; equivalent to a one(1) horsepower motor;

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.