The image shows an electromagnet. how could you increase the strength of an electromagnet? a) use a larger nail. b) use a smaller nail. c) use a battery with less voltage. d) use fewer coils of wire around the nail.

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

In a good thermo flask the main cause of heat loss is

What happens to the vapor pressure of a substance when its surface area is increased at constant temperature?