3. A hydrogen-filled balloon that weighs 10 N must displace_ N of air in order to float in air. Ifit displaces less than _N it will be buoyed up with less than N and sink.
Ifit displaces more than
N of air it will move upward.
RATS TO YOU TOO,
DANIEL BERNOULLI!
4. Why is the cartoon more humorous to physics
types than to non-physics types? What physics
has occurred?

In order to place a satellite into orbit, it requires enough fuel to supply the necessary mechanical energy. into what types of mechanical energy does the fuel get transformed?

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied

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