# Posts by annamaria

Total # Posts: 10

**physics**

Block B weighs 708 N. The coefficient of static friction between block and table is 0.32. Assume that the cord between B and the knot is horizontal. Find the maximum weight of block A for which the system will be stationary.

*September 28, 2010*

**physics**

An airplane is flying in a horizontal circle at a speed of 490 km/h. If its wings are tilted at 44° to the horizontal, what is the radius of the circle in which the plane is flying? Assume that the required force is procided entirely by an "aerodynamic lift" that...

*September 28, 2010*

**physics**

What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 31 km/h and the coefficient of static friction between the tires and the road is 0.29?

*September 28, 2010*

**physics**

During an Olympic bobsled run, the Jamaican team makes a turn of radius 7.9 m at a speed of 97.4 km/h. What is their accelaration in g-units?

*September 28, 2010*

**physics**

A sphere of mass 3.3 10-4 kg is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes an angle of 41° with the vertical when at rest (a) Find the magnitude of that push. (b) Find the tension in the cord.

*September 25, 2010*

**algebra**

yes since you x value is positive the graph opens upwards, and all absolute value graphs have a distinct V shape, using the vertical line test you can see that it is a function

*September 25, 2010*

**AP physics**

i really need help on this problem!! Three blocks are connected,on a horizontal frictionless table and pulled to the right with a force T3 = 64.4 N. Assume that m1 = 12.5 kg, m2 = 25.0 kg, and m3 = 31.7 kg. (a) Calculate the acceleration of the system (b)Calculate the tensions...

*September 24, 2010*

**AP Physics**

Thanks

*August 26, 2009*

**AP Physics**

è is theta

*August 26, 2009*

**AP Physics**

While exploring a cave, a spelunker starts at the entrance and moves the following distances: 75.0 m north, 250 m east, 210 m at an angle 30.0° north of east, and 150 m south. Find the resultant displacement from the cave entrance. I know I have to use the formulas Ax = A ...

*August 26, 2009*

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