Category: Physics

What do coefficients represent in a chemical equation? Coefficients are used in all chemical equations to show the relative amounts of each substance present. This amount can represent either the relative number of molecules, or the relative number of moles (described below). If no coefficient is shown, a one (1) is assumed. How do you […]

What is the equation for the change in momentum? The impulse experienced by the object equals the change in momentum of the object. In equation form, F • t = m • Δ v. What happens in an inelastic collision? An inelastic collision is a collision in which there is a loss of kinetic energy. […]

How do you know if a vessel is thin walled? Generally, a pressure vessel is considered to be “thin-walled” if its radius r is larger than 5 times its wall thickness t (r > 5 · t). What is the usual value of FOS for thin pressure vessel? Typical overall Factors of Safety Equipment Factor […]

What happens next depends on the mass of the star? About 75% of the mass of the star is ejected into space in the supernova. The fate of the left-over core depends on its mass. If the left-over core is about 1.4 to 5 times the mass of our Sun, it will collapse into a […]

What is the weight of 50 ml of water? Mixtures and Solutions – Numbers to Remember A B How much does 50ml of water weigh? 50g How much does a 50ml of saturated water weigh? 65g – 50 grams for the water and then 15 grams for the salt. How much does 50ml of saturated […]

Why does the viscosity of liquids decrease with temperature? The increase in temperature causes the kinetic or thermal energy to increase and the molecules become more mobile. The attractive binding energy is reduced and therefore the viscosity is reduced. How does viscosity of liquids vary with temperature? The viscosity of liquids decreases rapidly with an […]

Why is Pluto white? Pluto is the only place other than Earth in our solar system that’s known to have white-peaked mountains, but these white caps aren’t made of snow. Instead, they’re made of methane frost. The mountains are made of water ice, as temperatures on this dwarf planet can drop as low as minus […]

What are the traditions of Canada? Let’s look at the 7 top traditions in Canada that are unique to the country. Cottage culture. May 2-4. Canadian Thanksgiving. Beaver tails. St Jean Baptiste Day. St Patrick’s Day Parade in Montréal. Bloody Caesar. 5 jobs that are in high demand. What are examples of Canadian culture? Having […]

What makes you fail a credit check? Some of the most common reasons for failing a credit check might include: There was no way to confirm your identity and address. You may have failed a credit check, not because of any financial issues, but due to the fact that the lender (or landlord) couldn’t confirm […]

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