Pressure problem

A hydraulic press for compacting powdered samples has a large cylinder which is x = 11.8 cm in diameter, and a small cylinder with a diameter of y = 1.96 cm (see figure). A lever is attached to the small cylinder as shown. The sample which is placed on the large cylinder, has an area of 4.09 cm2. What is the pressure on the sample if F = 319 N is applied to the lever? I have no idea how to solve this problem. Thanks for the help!

Hurricanes

USING THE SCIENTIFIC METHOD EXPLAIN THE CYCLE OF A HURRICANE, HOW IT FORMS AND HOW IT BREAKS UP.

A woman astronaut weighs 120lb on earth-what does she weigh on mars?

A woman astronaut weighs 120lb on earth-what does she weigh on mars?

Forces, Fields and Energy - Gravitational Fields

The distance between the centres of the Earth and the moon is 3.8 x 10^8 m. Assume that the moon moves in a circular orbit about the centre of the Earth. Estimate the period of the orbit to the nearest day. *Mass of earth = 6.0 x 10^24 kg *1 day = 8.6 x 10^4 seconds *Distance between the centres of Earth and Moon = 3.8 x 10^8 m That above, is the problem. Common knowledge tells me that the answer will be 1 day, as it takes 24 hours for the Moon to orbit the Earth. I know therefore that the period will be 1 day, equivalent to 8.6 x 10^4 seconds, but the problem is that I do not know how to show this via working it out. I tried to calculate the angular velocity OMEGA, which is given by 2... click for more

Surface Temperature of the Sun

The amount of radiant power produced by the sun is approximately 3.9 x 10^26 watts. Assume the sun is a perfect blackbody sphere with a radius of 6.96 x 10^8 meters, find its surface temperature (in Kelvins).