Physics
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Physics
The bar in the figure has constant cross sectional area A. The top half of the bar is made of material "1" with mass density ρ1, and Young’s modulus E1. The bottom half of the bar is made of material "2" with density ρ2 and Young’s modul...
chemistry
A helium-filled balloon contains 143 mL of gas at a pressure of 0.99 atm. What volume will the gas occupy at standard pressure?
Ellison
Divers know that the pressure exerted by the water increases about 100 kPa with every 10.2 m of depth. This means that at 10.2 m below the surface, the pressure is 201 kPa; at 20.4 m below the surface, the pressure is 301 kPa; and so forth. If the volume of a balloon is 2.2 L ...
rearrange this equation
Rearrange to make f the subject, showing your work step by step: hf = hcT / b
analytical chem
What is the pH of a solution by dissolving 8.00 mmol of NaOAC in 200 mL of 0.100 m HOAC. (you need the pka for acetic acid)
physics
A car traveling at +6.3 m/s accelerates at the rate of 0.65 m/s^2 for an interval of 2.2 s. Find vf . Answer in units of m/s
maths, algebra
so 3 has a power of zero, correct?
maths, algebra
well,now that i know that all constants have a degree of zero, i understand. It's just that, i thought that numbers and variables that have no index are to the power 1; since x^1=x, I thought it would be okay to apply this rule on constants as well. In a), I thought the de...
maths, algebra
State the degree of each of the following: a)3 b)x^0 My answer for a) was: 1 My answer for b) was: 1 BUT at the back of the book, the answer for a) was 0. The answer for b) was also 0. I just don't understand why I'm wrong.
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