Khi hiệu điện thế đặt vào giữa hai đầu dây dẫn tăng lên ba lần thì cường độ dòng điện qua dây dẫn đó thay đổi như thế nào

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?