2. Two mechanics use pulleys to lift a 105 kg engine out of a car. The first mechanic pulls with a force of 675 N [U] and the second mechanic pulls with a force of 712 N [U]. The force of gravity acting on the engine is 1029 N [D].

Explain the consequences of this addiction to the brain tissue

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

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.