In the movie October Sky What problem with their rocket
causes the boys to pry up the
railroad? What do they do with the
tracks?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?