How can you know a physical change has occurred? The substance produces a gas
O The substance starts to smell bad
The substance catches on fire
The substance melted

Which fators influence ocean currents

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. a 1.0 kg block is placed on top of a 2.0 kg block. a horizontal rope pulls the 2.0 kg block across a frictionless floor with a force of 21.0 n. the coefficient between the two blocks is 0.75. does the 1.0 kg block on top slide?