A 47.4 kg student runs down the sidewalk and jumps w/ a horizontal speed of 4.2 m/s onto a stationary skateboard. The student and skateboard move down the sidewalk w/ a speed of 3.95 m/s. What is the mass of the skateboard?

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

Against his financial advisor's advice, frank has decided to invest his money in some risky stocks because he once made quite a bit of money in the stock market. his decision illustrates a. the representativeness heuristic b. overconfidence c. the availability heuristic d. confirmation bias select the best answer from the choices provided