Why do clothes get wet?

Why do clothes get wet? When light strikes any surface, some of it is reflected back into our eyes. But damp clothes have a thin layer of water on their surface (held in place by the material’s roughness), which leads to more of the reflected light rays being bent – ‘refracted’ – off-course. When a […]

How do I calculate time duration in Excel?

How do I calculate time duration in Excel? Another simple technique to calculate the duration between two times in Excel is using the TEXT function: Calculate hours between two times: =TEXT(B2-A2, “h”) Return hours and minutes between 2 times: =TEXT(B2-A2, “h:mm”) Return hours, minutes and seconds between 2 times: =TEXT(B2-A2, “h:mm:ss”) How do I calculate […]

Is the starter relay supposed to click?

Is the starter relay supposed to click? The starter relay not only completes the electrical circuit, but it also boosts the battery’s current. If your starter relay has gone bad, the electrical signal will never make it from the battery to the starter motor. A faulty relay often produces an audible clicking sound when you […]

What number of the month are we on?

What number of the month are we on? All months have 30 or 31 days, except for February which has 28 days (29 in a leap year). Every fourth year, the month of February has 29 days instead of 28. This year is called a “leap year” and the 29th day of February is a […]

What do you expect to find at a mid ocean?

What do you expect to find at a mid ocean? Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt. Which discovery did they make about rocks in relation […]

What is the critical angle of ice?

What is the critical angle of ice? 49.8 degrees How do you find the critical angle in Snell’s law? The critical angle can be calculated from Snell’s law by setting the refraction angle equal to 90°. For any angle of incidence less than the critical angle, part of the incident light will be transmitted and […]

Is the symbol for chlorine Cl or CI?

Is the symbol for chlorine Cl or CI? Chlorine is a chemical element with symbol Cl and atomic number 17. Classified as a halogen, Chlorine is a gas at room temperature….Chlorine. Atomic Mass 35.45u Year Discovered 1774 What is the classification for chlorine? Chlorine is in group 17 of periodic table, also called the halogens, […]

What is F MA Math?

What is F MA Math? The famous formula is: F = ma. “Newton’s Second Law of Motion” (F is force, m is mass and a is acceleration) Do you need calculus for F MA? F=ma does not require any Calculus background. It is a test designed to challenge your understanding and intuitive on the most […]

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