Category: Physics

Is kicking a ball an example of third law of motion? Newton’s Third Law Of motion Newtons third law states that “for every action, there is an equal and opposite reaction.” In soccer, when you kick the soccer ball you will feel the force of the kick back into your leg. You wont feel the […]

Why does my balloon car not move? Some of the things that slow balloon cars down, that you have to overcome, are their own weight, air resistance, friction, and inefficient use of the air escaping the balloon. Which type of balloon would deflate the fastest? Helium balloons How much does it cost to fill 100 […]

Does phenolphthalein turn pink in acid or base? Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. It belongs to the class of dyes known as phthalein dyes. What is the pH range for the color change of phenolphthalein? Indicator […]

What is positive decision making? Positive decision makes attempts to seek out all alternative outcomes and sets about achieving the best of those outcomes. Planning. Negative decision making, being based on the absence of negative consequences, has little opportunity for planning. What defines a good decision? A good decision is one that is made deliberately […]

How do you determine a two-force member? If an element has pins or hinge supports at both ends and carries no load in-between, it is called a two-force member. These elements can only have two forces acting upon them at their hinges. If only two forces act on a body that is in equilibrium, then […]

Can you die from doing too much homework? You may have received harried text messages over the past few days which say something like, “Studying any more today will literally kill me.” We would usually take issue with the seemingly poor use of the word “literally” here, but precedent shows that it actually is possible […]

What is called inertia? Newton’s first law of motion states that a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This is also known as the law of inertia. Inertia is the tendency of an object to remain […]

Why is a scale important on a graph? The distance between two numbers indicates a unit and this unit remains uniform throughout a scale. Thus, a scale plays a crucial part in plotting graphs. Without scales, we won’t be able to infer anything relevant from the graph. A scale on a graph can have any […]

Why is reflection important in writing? Reflective writing gives you the chance think about what you are doing more deeply and to learn from your experience. Writing your thoughts down makes it easier for you to think about them and make connections between what you are thinking, what you are being taught and what you […]

What is the most probable reason why a life jacket helps you float in water? The trapped air weighs much less than the weight of the water it displaces, so the water pushes up harder than the life jacket pushes down, allowing the life jacket to remain buoyant and float. This buoyancy is strong enough […]