A 20 kg cart is moving to the right at 5 m/s when it collides elastically with a 45 kg cart that is at rest. After the collision the 20 kg cart is moving to the left at 1.5 m/s. What is the final speed and direction of the 45 kg cart?

3. on your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. locate these elements on your periodic table. what term or description would you use to identify these elements with respect to the periodic table?

The mini-refrigerator fire was most likely caused by what type of wiring?

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)