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Questions in physics

[Open]A student places four T-shirts outside on a sunny day. Which color shirt will reflect the most light? - Red - Black - Green - White

[Open]What happens when an object with a lower density is placed in a container with an object with a higher density?

[Open]How do solids, liquids, and gases differ?

[Open]What determines the ideal mechanical advantage of a pulley?

[Open]Compare and contrast four types of friction.

[Open]Describe an original example of energy changing from one form to two other forms.

[Open]What metric units are used to report the mass of an object?

[Open]Give two examples of friction: 1. Being useful in everyday life: - Example 1: Brakes on a bicycle. - Example 2: Walking without slipping. 2. Being a problem in everyday life: - Example 1: Wear and tear on moving parts of a machine. - Example 2: Friction causing overheating in engines.

[Open]How are weight and force related? Explain using complete sentences.

[Open]What is the acceleration of a 50 kg object that has been given a 20 N push?