Category: Physics

What happens if 2 vectors are perpendicular? If two vectors are perpendicular to each other, then their dot product is equal to zero. What is a vector diagram? Vector diagrams are diagrams that depict the direction and relative magnitude of a vector quantity by a vector arrow. Vector diagrams can be used to describe the […]

What is a reactant simple definition? The substance(s) to the left of the arrow in a chemical equation are called reactants. A reactant is a substance that is present at the start of a chemical reaction. The substance(s) to the right of the arrow are called products . A product is a substance that is […]

What is an example of mechanical energy to heat energy? Rubbing your hands together converts mechanical energy to thermal energy. Turning on a light switch converts mechanical energy to electrical and radiant energy. Digesting food converts mechanical energy to chemical energy. What is the relationship between mechanical energy and heat? Mechanical energy can be converted […]

Is the movement of electrically charged particles? Electric current, any movement of electric charge carriers, such as subatomic charged particles (e.g., electrons having negative charge, protons having positive charge), ions (atoms that have lost or gained one or more electrons), or holes (electron deficiencies that may be thought of as positive particles). How does charge […]

Is concrete strong in compression or tension? Concrete is a non-linear, non-elastic and brittle material. It is strong in compression and very weak in tension. It behaves non-linearly at all times. Because it has essentially zero strength in tension, it is almost always used as reinforced concrete, a composite material. Why is concrete better in […]

Can frogs change gender? Frogs can change their sex even in pristine, pollution free settings. Past research suggested that male-to-female sex changes happening in frogs in suburban ponds may be caused by increased levels of estrogen released into the water. As far as they know, frogs can only change sex during their tadpole phase. What […]

How do you say no in professional life? Use these examples to politely say “no” to your employer and coworkers: “Unfortunately, I have too much to do today. “I’m flattered by your offer, but no thank you.” “That sounds fun, but I have a lot going on at home.” “I’m not comfortable doing that task. […]

What grade is a 67%? Percent Letter Grade 70 – 72 C- 67 – 69 D+ 63 – 66 D 60 – 62 D- Is 70 an A or B? Letter Grade Percentage Range Mid-Range A 80% to 89% 85% B+ 75% to 79% 77.5% B 70% to 74% 72.5% C+ 65% to 69% 67.5% […]

Is a 9 pound bowling ball too light? A bowling ball should weigh 10 percent of your body weight (up to 16 pounds), which means you really shouldn’t be grabbing, say, an 8-pound ball if you weigh 150 pounds. You want some weight to the ball, but it shouldn’t be so heavy that it’s uncomfortable. […]

What are the top 5 math careers? D. to be considered for the lucrative career path that you want to pursue. Physicist. Physicists obviously need to understand math to do their jobs effectively. Mathematician. Aerospace Engineer. Economist. Actuary. Statistician. Cryptographer. Financial Analyst. How can I be brilliant in maths? 10 Tips for Math Success Do […]