Peg

2independant alternators. probabalitity one will fail in a 1 hour flight is .02 what is the probablility both will

Madison pushes with a 160-N horizontal force on a 20-kg crate of coffee resting on a warehouse floor. The force of friction on the crate is 80 N. Show that the acceleration is 4 m/s2.

A rocket of mass 100,000 kg undergoes an acceleration of 2 m/s2. Show that the net force acting on it is 200,000 N.

A simple lever is used to lift a heavy load. When a 60-N force pushes one end of the lever down 1.2 m, the load rises 0.2 m. Show that the weight of the load is 360 N.

The maxlevel that the EPA considers safe for lead in air is 1.5 microgram/m3 . If your lungs were filled with air containing this level of lead, how many moles of lead atoms would be in your lungs? (Assume a total lung volume of 5.50 L and 1 cm3 = 1mL.)

A surveyor wants to find the distance from a rock on east side of river to a tree across on the opposite bank. On east side he locates a rock 135 ft from first rock. From each rock he measures the angle between the line connecting the two rocks and the tr...

Convection currents

Amy is running a race. She runs 7 miles at 11.12 per mile. How many hours does she run?