An optical microscope, intended for visual observation, is constructed with a 75 mm objective lens and a 150 mm eyepiece. The microscope is used for viewing an object at a distance of 125 mm from the objective. Calculate the magnification of the microscope.

A10.0 kg cart and a 15kg cart are locked together with a compressed spring between them. they are then released so that the spring pushes the two carts apart. the 10.0 kg cart is moving at 4.5 m/s afterward. how fast is the 15kg cart moving? 3.0 m/s 2.0 m/s 4.5 m/s 5.0 m/s

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of