Calculate the energy needed to heat 4 kg of water from 25°C to 45°C.

heat =

80 Kcal

100 Kcal

180 Kcal

280 Kcal

Only one symbol must be included in every circuit diagram. What symbol is it? Question 1 options: a symbol for an anmeter a symbol for a voltmeter a symbol for a battery or some other voltage source a symbol for a switch

Most of the energy released by nuclear fission is in the form of: alpha rays, beta rays, or gamma rays?

Explain how inertia and the shape of a loop counteract the force of gravity to keep riders from falling out when a roller coaster goes through a loop traveling upside down

How is weight different from mass?

An eagle flies from its perch in a tree to the ground to capture it's prey. describe it's energy transformations.

The tilt of the Earth's axis of rotation changes over a period of 41,000 years. Which of these statements best predicts a long term effect of the changes in the tilt of the Earth's axis of rotation? a. The Earth's climate would change. b.

What do keratinized cells form?

Explain why Planck's introduction of quantization accounted for the properties of black-body radiation.

How and which waves travel either through a medium or a vacuum?

Which of the following most accurately represents John Dalton's model of the atom?