physics
the gravity on mars is 3.69 meters/second^2. if you had a pendulum on mars that was 1.8 meters long. what would the period be?
Chemistry
Which two elements is the second transition series (y through Cd) have four unpaired electrons in their 3+ ions?
Chemistry
An unknown solid acid is either citric acid or tartaric acid. To determine which acid you have, you titrate a sample of the solid with NaOH. The appropriate reactions are as follows: Citric acid: H3C6H5O7 (aq) + 3NaOH (aq) -> 3H2O (l) + Na3C6H5O7 (aq) Tartaric acid: H2C4H4O...
Chemistry
Estimate how many microwave photons with 1=12 cm must be absorbed to raise the temperature of your eye by 3 degree C. Assume the mass of an eye is 11 g and its specific heat capacity is 4.0 J/g/k
geomerty
Find the area of the regular polygon. Round your answer to the nearest tenth. the individual sides are 10 the radius is 13.07
math
would it be 3 pi 4 sq units
Physics
Here's a neat trick. If your average ceramic bowl has a mass of 200 g, what is the difference in Newtons between the weight of the bowls on the top of her head before and after she does the trick?
chem
Chromium(III) chloride(aq) + potassium sulfide(aq) what are the products of this reaction
chem
takes 190. seconds for a sample of carbon dioxide to effuse through a porous plug and 295 seconds for the same volume of an unknown gas to effuse under the same conditions. What is the molar mass of the unknown gas? Enter your answer to 3 significant figures.
Biology
Is 9th grade biology hard? Is it interesting...?? I love life science but I just wondering if 9th grade biology hard??? I'm taking biology next year.
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