A 40g bullet, fired from a rifle, hits and embeds into the pendulum. The 5kg pendulum swings backwards (pivots) and reaches a height of 0.15m. What
was the initial velocity of the bullet before the collision with the pendulum?
please provide your work!!!

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

What are atoms of the same element with varying number of neutrons