The escape speed from the Earth is 1.12 x 104 ms-1, so that a gas molecule travelling away from the earth near the boundary of the earth's atmosphere would, at this speed,
be able to escape from the earth's gravitational field and can be lost from the
atmosphere. At what temperature is the rms speed of oxygen molecules, and helium
atoms equal to Vrms = 1.12 x 104 ms-t? [Use the periodic table to help you

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?

If element x has 99 protons how many electrons does it have

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?