Wednesday
December 11, 2013

# Posts by Sierra

Total # Posts: 185

Trig
Give: a=alpha B=beta csc a= 2 pi/2<a<pi secB=-3 pi/2<B<pi 1)find sin(a+B) 2)find tan(a-B) 3)cos B/2 4)sin a/2

trig
How do you find the exact value of sin 5pi/8?

Physics
a quaterback throws a ball to a stationary reciver wo is 15.2m down the feild. the football is thrown at an initial angle of 42 dagrees. acceleration is 9.81m/s^2. what is the initial speed that quaterback must throw the ball to hit the reciver?

physics
Consider again the problem of a car traveling along a banked turn. Sometimes roads have a "reversed" banking angle. That is, the road is tilted "away" from the center of curvature of the road. If the coefficient of static friction between the tires and the ...

physics
A compact disc spins at 2.7 revolutions per second. An ant is walking on the CD and finds that it just begins to slide off the CD when it reaches a point 2.8 cm from the CD's center.

physical science
what is the density of a peice of wood that has a mass of 25.0 grams and a volume of 29.4cm cubes?

math
would you use perimeter or area to find the quanity of track needed for a tabletop railroad

Physics
A snake is sunning itself on a rock. (a) If the snake is 0.5 m long, what is the approximate amount of radiation it absorbs from the Sun in 11 min? (Assume the snake has a cylindrical shape and ignore both ends, a radius of 0.03 m, and a mass of 2.1 kg. Assume also that the em...

Physics
The intensity of sunlight at the the top of the Earth's atmosphere is about 1350 W/m2. (The intensity at the surface of the Earth is somewhat smaller due to absorption and reflection by the atmosphere.) What is the total power emitted by the Sun?

Physics
Use the exact values you enter in previous answer(s) to make later calculation(s). Energy-efficient windows are constructed with two panes of glass separated by an air gap (see figure below). In a typical window of this type, the air gap makes a huge difference in the rate of ...

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members