The energy needed to keep a 75-watt lightbulb burning for 1.0 h is 270 kJ . Calculate the energy required to keep the lightbulb burning for 5.0 h in kcal

Which term refers to a property that depends only on the amount of a substance? ©@

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum