Category: Physics

Do necklaces work as pendulums? Pendulums can be made of different materials, some people using a simple necklace with a crystal or charm at the end. Be sure the bob or bobber – or weight on the end – is not too light or too heavy. The best length for the pendulum is six inches. […]

What planet can sustain life? Earth What is the hottest temperature ever recorded on Mars? 35° C What is the hottest it has ever been in Death Valley? 134°F Why do they call it Death Valley? Why is it called Death Valley? Death Valley was given its forbidding name by a group of pioneers lost […]

What are the types of systematic errors? Systematic errors may be of four kinds: Instrumental. For example, a poorly calibrated instrument such as a thermometer that reads 102 oC when immersed in boiling water and 2 oC when immersed in ice water at atmospheric pressure. Observational. For example, parallax in reading a meter scale. Environmental. […]

Can we sit on a cloud? Although we can’t really touch clouds you could walk through one. In fact that’s what fog is: a cloud that’s formed close to the ground instead of high in the sky. We can’t touch fog but we can move through it. Although it’s fun to imagine sitting on a […]

What does reason stand for in life skills? REASON acronym. context. The circumstances, atmosphere, attitudes, and events surrounding a text. You just studied 23 terms! What does the reason acronym stand for in business? Response and Effects Analysis System for Operational Needs What does responsible stand for? Responsibility. Being responsible means being dependable, keeping promises […]

What is centripetal force equal to? The magnitude F of the centripetal force is equal to the mass m of the body times its velocity squared v 2 divided by the radius r of its path: F=mv2/r. According to Newton’s third law of motion, for every action there is an equal and opposite reaction. Why […]

How do you calculate bolometric luminosity? L⊙ = 4 × 1033erg s−1 = solar luminosity. 6 L⊙. Mbol = 4.8 − 2.5 log (L/L⊙) = absolute bolometric magnitude of a star with a luminosity L . What is luminosity a measure of? Luminosity is an absolute measure of radiant power; that is, its value is […]

How does consumerism affect healthcare? Healthcare consumerism transforms an employer’s health benefit plan, putting the economic purchasing power and decision-making in the hands of plan participants. In short, healthcare consumerism’s goal is to enable patients to become wholly involved in their healthcare decisions. Why is consumer experience a problem in healthcare? One of the biggest […]

Is it bad to leave a basketball in a hot car? If you expose your basketball to the elements for too long, eventually they will expose your basketball. Rain or shine, hot or cold, neither indoor or outdoor basketballs should be left outside in extreme conditions. Any type of wetness can ruin the quality of […]

Is the water displacement method accurate? The change in water level equals the volume of the submerged object. This method is more accurate than measuring water that has spilled out an overflowing beaker. You may need to remind students of the need for accuracy, not only in the weighing of the objects, but also in […]