Two positively charged particles are separated on an axis by 0.1 meters; q1 has a 3 microcoulomb charge and q2 has a 2 microcoulomb charge. Recall that k = 8.99 × 10^9 N • meters squared over Coulombs squared.

a) What is the magnitude of the force applied between q1 and q2?
b) Is the force on q2 directed toward or away from q1?

please help!

Why is metal often used for cooking pan?

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s. t.p.?