Category: Physics

What is the acceleration of a falling skydiver? Near the surface of the Earth, any object falling freely will have an acceleration of about 10 m/s 2. What happens to a skydivers acceleration? The skydiver accelerates towards the ground. As the skydiver gains speed, their weight stays the same but the air resistance increases. There […]

How do you know if a graph is direct or inverse? Numerically: Direct Variation: Because k is positive, y increases as x increases. So as x increases by 1, y increases by 1.5. Inverse Variation: Because k is positive, y decreases as x increases. Is addition and subtraction inverse relationship? Addition and subtraction are inverse […]

What foods promote neurogenesis? Intake of flavonoids, which are contained in dark chocolate or blueberries, will increase neurogenesis. Omega-3 fatty acids, present in fatty fish, like salmon, will increase the production of these new neurons. Conversely, a diet rich in high saturated fat will have a negative impact on neurogenesis. How does neurogenesis affect memory? […]

What is Stonehenge aligned with? The sarsen stones, put up in at the centre of the site in about 2500 BC, were carefully aligned to line up with the movements of the sun. If you were to stand in the middle of the stone circle on midsummer’s day, the sun rises just to the left […]

What temperature does it need to be to sunbathe? 88° F: Perfect beach temperature. Hot enough that you have motivation to get in the water, not so hot that you bake too quickly. 90° F: Excellent sunbathing temperature. Is 25 degrees warm enough for the beach? Refreshing, but after a while it still feels too […]

What is the effect on the pressure of a gas if you simultaneously? According to the combined gas law, When we halve the pressure and double the Kelvin temperature of a gas simultaneously, then the volume of the gas will be increased by a factor of 4. Chapter 8, Problem 65AP is solved. Does water […]

What causes changes in seasons? Seasons change because of the tilt of the Earth and the planet’s movement around the Sun. Did you know? It takes about 365.25 days for the Earth to orbit the Sun. We have leap years to make up for the extra ¼ day! Why are there only two seasons in […]

Does the Equator ever move? Equatorial Shift These occur due to the spinning of the Earth, which creates winds that push ocean waters to the north in the Northern Hemisphere, and to the south in the Southern hemisphere. In other words, the equator moved. The only way for the equator to move is for the […]

Why is it wrong to say carbon dioxide is an element? Carbon dioxide is a compound. Its molecules consist of one carbon atom joined to two oxygen atoms. In the atmosphere, carbon dioxide is a greenhouse gas. We use carbon dioxide to make drinks fizzy and keep foods fresh. What are the 4 types of […]

Which element does not form a covalent bond? A covalent bond is formed by the sharing of electrons by two non-metals. The elements that is unlikely for form covalent bond are K and Ar. What type of bonding is o2? covalent bonds Is O2 a single or double bond? The O2 Lewis structure has a […]