Hladina rtuťového teploměru vystoupala do výšky 30 cm. Vypočítej velikost hydrostatického tlaku na dně teploměru. Hustota rtuti je 13 534 kg/m3.

Are aliens real? justify you’re answer.

Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground.what is his gravitational potential energy above the ground?

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.