Un fir, de sectiune s = 5 mm patrati si lungime l0= 32 cm, este intins de o forta. stiind ca e = 3 * 10 la put 7 n/m patrat, sa se calculeze constanta elastica k a firului.

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?

What is a subatomic particle with a negative charge and very little mass?

Plz explain what friction, corollas, and a low pressure gradient does to an air parcel. what is 1+1=