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How do you explain why puddles evaporate on cold days ?

Temperature is a measure of the average kinetic energy of an object. We can approximate this average kinetic energy using the relationship E≈kT. Where k is the boltzmann constant and T is the absolute tem...

ST
Answered by Sam T. Physics tutor
6707 Views

Find roots 'a' and 'b' of the quadratic equation 2(x^2) + 6x + 7 = 0

We know to find roots of any quadratic equation we use the quadratic formula, [-b +- (b^2 - 4ac)^(1/2)]/2a where a=2, b=6, and c=7.

Plug these values in and we obtain, [-6 +- (-20)^(1/2)]/4. [Remem...

SN
2778 Views

What can I do to improve my Italian reading skills in order to pass my exam with flying colours?

In order to improve your Italian reading skills, you must improve your comprehension skills first, which means that you have to know how to find in a written text the information that will help you to ans...

CG
Answered by Claudia G. Italian tutor
2195 Views

0.120g of an ideal gas was introduced into a gas syringe. The volume occupied by the gas at a pressure of 1.02x10^5 Pa and temperature 20 degrees was 49.3 cm^3. Calculate the molar mass of the gas.

The ideal gas law is PV=nRT, and we know that we can achieve the molar mass through the relationship of; n=m/mr. When using the ideal gas law it is essential that we use SI units before we begin plugging ...

RS
Answered by Robbie S. Chemistry tutor
2981 Views

How is the passive used in Spanish?

The passive is used more often in English than in Spanish. In Spanish active sentences are preferred in most cases. For example: She was bitten by the dog is most naturally expressed in Spanish as El perr...

DM
Answered by Daniel M. Spanish tutor
2368 Views

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