Matteo guarda la pioggia fuori 3 punti dal finestrino del treno mentre
è fermo in stazione. Le gocce
cadono verticali sul finestrino
alla velocità di 5.0 m/s. Quando
il treno si muove a velocità
costante, le gocce cadono di
taglio e formano un angolo di
25° sul finestrino. Quale è la
velocità del treno?
5,0 m/s
2,3 m/s
Ο Ο Ο Ο
O m
1,5 m/s
O 3,7 m/s

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

Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?