Category: Physics

Is 19 km/h wind strong? 10 to 19 km/h Weather wanes will move, leaves will rustle, and you’ll feel a breeze on your face. Situation normal. 20 to 29 km/h Strong enough to straighten flying flags and shake small tree branches. How much is 70 km in miles per hour? Convert 70 Kilometers per Hour […]

What element has 2 protons 2 neutrons? Helium What did Chadwick prove? In 1932, Chadwick made a fundamental discovery in the domain of nuclear science: he proved the existence of neutrons – elementary particles devoid of any electrical charge. For this epoch-making discovery he was awarded the Hughes Medal of the Royal Society in 1932, […]

What does it mean if a girl says Nevermind? “Never mind.” means “I don’t really know how to explain this in a way you’ll understand.” “Nothing.” means “Something, but I’m going to test you to see how you react.” “So, who is she?” means “Okay, I’m trying really hard to not sound jealous, but I’m […]

What is the maximum potential energy of the spring? When the kinetic energy is maximum, the potential energy is zero. This occurs when the velocity is maximum and the mass is at the equilibrium position. The potential energy is maximum when the speed is zero. What is the potential energy of a spring derive it? […]

What is the pressure at the bottom of a swimming pool that is 3 meters in depth? 29,400 pa What is the pressure at the bottom of a pool? The chart shows that 2.31 feet of water will create one PSI. So in CPO class, I ask the students: “How much pressure is at the […]

Is it safe to swim to a sandbar? The trough can be a gentle swim, but the sandbars around it can also shift to create the rip currents — channeled rushes of water pulling away from shore — that have caused so many drownings and near drownings over the years. “You are always going to […]

Which is best analog or digital? Digital recordings can have a greater signal-to-noise ratio depending on the bit depth of the recording. This jump in elevation can create a digital noise. The smooth analog signal matches the recorded sound wave better than the steps of a digital recording. What are the three components of a […]

Is a woodchuck and a beaver the same thing? The woodchuck and the beaver belong to the same rodent species, and are closely related to the squirrel family. Though they exhibit certain resemblance like the ever-growing teeth, gnawing habits, and ability to regulate temperature, there are a lot of differences in their habitats, breeding and […]

What happens when a cell with 1% salt gets put into a 10% salt solution? It is a type of passive transport. A cell has a 1% salt concentration. It is placed into a solution containing a 10% salt concentration. Water will move out of the cell, causing it to shrink. What are examples of […]

How can you speed up an exothermic reaction? Decrease the temperature in Exothermic reactions (Reactions that release energy, or become hot) Add a catalyst (A substance that reduces activation energy, speeding up the reaction) Increase the concentration of reactants. Increase the concentration of catalysts. Why is a match exothermic? – when Energy is released along […]