Thursday
December 12, 2013

# Posts by cindy

Total # Posts: 814

PHYSICS
A weather vane initially at rest has a moment of inertia of 0.115 kg · m2 about its axis of rotation. A 44.5 g piece of clay is thrown at the vane and sticks to it at a point 10.5 cm from the axis. The initial velocity of the clay is 18.5 m/s, directed perpendicular to ...

PHYSICS
Question Part Points Submissions Used A baseball pitcher pivots his extended arm about his shoulder joint, applying a constant torque of 170 N · m for 0.15 s to his arm, which has a moment of inertia of 0.53 kg · m2. (a) Find his arm's angular acceleration a...

Physics
A 3.00-kg block starts from rest at the top of a 33.5° incline and slides 2.00 m down the incline in 1.30 s. (a) Find the acceleration of the block. m/s2 (b) Find the coefficient of kinetic friction between the block and the incline. (c) Find the frictional force acting on...

Physics
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 130 N at an angle of 30.0° above the horizontal. The box has a mass of 24.0 kg, and the coefficient of kinetic friction between box and floo...

Chemistry
How do you find pressure in this case ?

Chemistry
A sample of oxygen is collected over water at a total pressure of 592.2 mmHg at 27C. The vapor pressure of water at 27C is 26.7 mmHg. What is the partial pressure of O2? ***Please show steps

math
A wooden pyramid, 12 inches tall, has a square base. A carpenter increases the dimensions of the wooden pyramid by a factor of 5 and makes a larger pyramid with the new dimensions. Describe in complete sentences the ratio of the volumes of the two pyramids.

math
swimming lessons at the local park district swimming pol cost \$18.00 for 3 weeks of lessons. What is the best estimate of the total cost for 8 people to take swimming lessons at the pool?

chemistry
2L of 6M HCl

math: elapsed time
12h 55min 9s + 8h 25min 25s

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