physics
A electric model train travels at 0.339 m/s around a circular track of radius 1.75 m. How many revolutions does it perform per second, i.e, what is the motion's frequency?
physics
A electric model train travels at 0.339 m/s around a circular track of radius 1.75 m. How many revolutions does it perform per second, i.e, what is the motion's frequency?
Chemistry
During an experiment, a student adds 0.339 g of calcium metal to 100.0 mL of 2.05 M HCl. The student observes a temperature increase of 11.0 °C for the solution. Assuming the solutions' final volume is 100.0 mL, the density is 1.00 g/mL, and the specific heat is 4.184 ...
Math
f(-2) = 2 |-2-2| f(x^2+2) = 2|x^2+2-2|
earth
Suppose that an object on Earth has a known mass of 80 kgs. Will the mass of that object be less than, more than, or the same as on the other planets in our solar system? Explain your answer.
Physics
A bucket full of water (15kg) is swung in a vertical circle on a rope 1.5m long. What is the minimum speed it can be swung so that the water doesn't fall out at the top? Which equations should I start with first?
AP Chemistry
Each increase in pressure of 100 atm decreases the melting point of water by 1.0 degrees C. Estimate the temperature at which liquid water freezes under a pressure of 400 atm. How do I approach this problem?
Physics
My problem question: "A ball is thrown up onto a roof, landing 4.0 seconds later at a height of 20.0 m above where it was thrown. The ball's velocity vector upon landing on the roof top was angled 60 degrees to the horizontal flat roof top. Find the horizontal distanc...
Physics
So, would the components look something like this: 450cos200 450sin200 350cos130 350sin130
Physics
That doesn't require me to find the x and y components of those vectors, does it?
For Further Reading
