Top answers

How do I convert cartesian coordinates into polar coordinates?

Polar coordinates are expressed in the form (r,θ), where r is the distance of the point, P, from the origin, and θ (usually expressed in radians) is the angle between the line joining the point to the origin...
GW
4517 Views

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 temper...
ST
Answered by Sam T. • Physics tutor
7709 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. [Remember for im...
SN
3628 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 answer...
CG
Answered by Claudia G. • Italian tutor
2729 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 in ...
RS
Answered by Robbie S. • Chemistry tutor
3688 Views