I need help Can you help me with this problem? An elevator travels 28m upwards to the 8th floor in 9.5 seconds, wait for 20 seconds as somebody gets on then travels down 10m down to the 5th floor at a speed of 3.0m/s? What is the average speed of the elevator during this time. What is the average velocity of the elevator? I have speed as 1.2m/s
and 0.55m/s Up

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c