Select the correct answer.
What happens when a rubber balloon is rubbed against wool and gains electrons?
OA.
A positive charged is induced on the balloon and the wool acquires a negative charge.
B.
A negative charged is induced on the balloon and the wool acquires a positive charge.
C.
The balloon and the wool both become positively charged.
D.
The balloon and the wool both become negatively charged.
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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.

pecialized keyboards

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y