Pyrite is called "fool's gold" because it's looks a lot like gold. which properties can be used to tell gold and pyrite apart?

Abody of weight 60 kg is standing in a lift the lift going upward with a uniform velocity of 4.9 metre per second slows down and stops in two seconds then apparent weight of the body during the slow down process is

Um vetor representa um deslocamento cujo módulo é 20 m. se v faz um ângulo de 60 graus com a horizontal, qual é o valor das componentes horizontal e vertical deste vetor?

What will a positive and a negative charge do if they are separated from each other?