Category: Physics

Does aluminum or lead have a greater buoyant force? Insight: Although each sphere experiences the same buoyant force, the lead sphere is more massive than the aluminum sphere and therefore the lead sphere still weighs more while submerged than does the aluminum sphere. Is lead buoyant? The specific gravity of lead is 11.34 – which […]

What kind of a wave is sound? These particle-to-particle, mechanical vibrations of sound conductance qualify sound waves as mechanical waves. Sound energy, or energy associated with the vibrations created by a vibrating source, requires a medium to travel, which makes sound energy a mechanical wave. How ECHO is created? An echo is made by sound […]

Which device is used to break a circuit? switch Why is switch used in a circuit? The purpose of a switch in a series circuit is to make it easy to open or close the electrical circuit, turning the flow of electricity on or off. The purpose of the wires in a series circuit is […]

What do I say in an email with my resume? How to Email a Resume? Use an effective subject line. Address the hiring manager by name. In the first paragraph, tell the hiring manager who you are and why are you contacting them. In the second paragraph say what value you’d bring to the company. […]

How much work is done in stretching the spring? Reasoning: The work done in stretching or compressing a spring is proportional to the square of the displacement. If we double the displacement, we do 4 times as much work. How many lbs of force does it take to hold a spring 4ft beyond its natural […]

What is a sample space diagram? A sample space diagram is a maths table showing all the possible outcomes or results of events. It is used for probability questions. For example, the sample space of flipping a coin is heads or tails! What is possibility diagram? A Probability Space Diagram, or Sample Space Diagram, shows […]

What do radio waves in microwaves have in common? What do radio waves and microwaves have in common? Both are found next to visible light on the electromagnetic spectrum. Which part of the electromagnetic spectrum has the lowest radiant energy? What is one example of the use of an infrared sensor? Is 5G a microwave […]

How can you protect an organism? Here are some tips: Make sure you don’t throw toxic, or harmful, materials in the trash, like paint or car batteries. Don’t take super long showers or let water run when you aren’t using it. Don’t drink from plastic water bottles. Don’t have wild animals as pets. Don’t depend […]

Does the initial velocity affect acceleration? Initial velocity is independent of the slope of the graph; that is, the acceleration. Does a heavier object hit the ground first? In other words, if two objects are the same size but one is heavier, the heavier one has greater density than the lighter object. Therefore, when both […]

What are the problems that cause and effects of ozone depletion? Effects of ozone depletion for humans and the environment Ozone layer depletion causes increased UV radiation levels at the Earth’s surface, which is damaging to human health. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders. How […]