Category: Physics

Does oxygen have a fixed shape? The state that a given substance exhibits is also a physical property. Some substances exist as gases at room temperature (oxygen and carbon dioxide), while others, like water and mercury metal, exist as liquids. (a) Solid O2 has a fixed volume and shape, and the molecules are packed tightly […]

What does it mean when a ambulance lights are on but no siren? Generally, when the lights are on but the siren is not activated, the crew is just tired of hearing the noise and only using the siren at intersections. The problem with that is that it’s not legal. Why does an ambulance not […]

What 3 places on earth do convection currents occur? Convection currents occur within: the atmosphere – wind. the hydrosphere – ocean currents. How convection takes place in the mantle? The mantle is heated from below (the core), and in areas that are hotter it rises upwards (it is buoyant), whereas in areas that are cooler […]

Can you please look into it? Sometimes, when we lack the time, we ask someone else to look into a problematic situation for us. Both of the given sentences — “Can you please look into it?” and “Please look into it” — are ways of asking for someone’s help with the investigation. Both use the […]

What social and emotional changes are associated with puberty? During puberty your child’s emotions may become stronger and more intense. Their mood might change more frequently, quickly and randomly. Your child may have strong emotions that they’ve never experienced before. It’s common for them to feel confused, scared or angry and not know why. Why […]

Can you solve physics problems? Multiply and divide the quantities until the units match the units of the answer quantity. For example, if you’re trying to find Potential Energy (kg*m2/s2) and you have the height (m), mass (kg) and gravitational acceleration (m/s2), you can match the units by multiplying the three quantities (m*kg*m/s2=kg*m2/s2). How do […]

What are 6 Non-renewable resources? Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. What is the best reason to use renewable resources? Environmental and economic benefits of using renewable energy include: Generating energy that produces no greenhouse gas emissions from fossil fuels and reduces some types of air pollution. Diversifying energy supply […]

How often do blue moons occur? How often does a blue moon happen? Normally blue moons come only about every two or three years. In 2018 unusually, we had two blue moons in one year and only two months apart – and one was a lunar eclipse! How many blue moons are there in 2020? […]

How do you explain weather and climate? Weather can change from minute-to-minute, hour-to-hour, day-to-day, and season-to-season. Climate, is the average of weather over time and space. We hear about weather and climate all of the time. Most of us check the local weather forecast to plan our days. Which season is the most windy? Of […]

What color of light has the highest frequency? Violet waves What is the depression of light? Dispersion of light is caused by the change of speed of light ray (resulting in angle of deviation) of each wavelength by a different amount. Note: White light comprises of seven visible colours (VIBGYOR) whereas black (or dark) signifies […]