Thursday
December 12, 2013

# Posts by Sasha

Total # Posts: 320

physics
Determine how much water would be present in a 10 tonne sample of lignite, has a moisture content of 65%, before crushing and drying. 10 tonnes is 10,000 kg.

physics
Wouldn't you take tan-1 of Y/X Y= 80 because you're heading north on a y-axis then 45 m would be your x-axis so tan-1 (80/45)??

physics
You walk 80 m to the north, then turn 60 degrees to your right and walk another 45 m. Determine the direction of your displacement vector. Express answer relative to east :)

physics
A boy throws a rock with an initial velocity of 2.47 m/s at 30.0 degrees above the horizontal. How long does it take for the rock to reach the maximum height of its trajectory?

physics
A plane flies directly from city A to B, which are separated by 2300mi. From A to B, the place flies into a 65mi/hr headwind. ON the return trip from A to B, the wind velocity is unchanged. The trip from B to A takes 44 min less than the trip from A to B. What is the airspeed ...

Calculus
i got 7.7 for width and 9.5 for length? does this sound right

Calculus
A poster is to have an area of 170 in2 with 2 inch margins at the bottom and sides and a 3 inch margin at the top. What dimensions will give the largest printed area? (Give your answers correct to one decimal place.)

physics
the first excited state of the nucleus of uranium-235 is 0.051 MeV above the ground state. what is the wavelength of the photon emitted when the nucleus makes a transition to the ground state? (in meters)

music
c. Dissonance Many pieces today are very dissonant. In the olden days, composers were pressured to create music that was pleasing to the ear, so in the past, music was more melodious.