Two automobiles are equipped with the same single-frequency horn. When one is at rest and the other is moving toward an observer at 18 m/s, a beat frequency of 5.4 Hz is heard. What is the frequency the horns emit

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.

the inner core.

good luck: )

klicker

it is a negative acceleration