1. W jaki sposób można pokazać kształt linii pola magnetycznego mając do dyspozycji magnes sztabkowy, opiłki żelaza, szklaną szybkę. Zapisz przebieg, obserwację , wniosek.

2. Dlaczego wokół Ziemi istnieje pole magnetyczne? Opisz ziemskie pole magnetyczne.

3. Jak działa kompas?
Dziękuję))​

An airplane flying parallel to the ground undergoes two consecutive displacements. the first is 76 km at 39.8◦ west of north, and the second is 156 km at 59.9◦ east of north. what is the magnitude of the plane’s total displacement? answer in units of km. 020 (part 2 of 2) 10.0

Humidity is to blame for that muggy, steamy feeling you experience on some hot summer days. what gas in the atmosphere causes humidity? a) oxygen b) hydrogen c) nitrogen d) water vapor

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?