In a cathode ray tube in an old tv, electrons are acceler-ated from rest with a constant acceleration of magnitude 7.03 × 10 13 m/s 2 during the first 2.0 cm of the tube’s length; then they move at essentially constant velocity another 45 cm before hitting the screen. (a) find the speed of the electrons when they hit the screen. (b) how long does it take them to travel the length of the tube?
Answers: 2
Physics, 22.06.2019 10:30, arigar
Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.
Answers: 3
Physics, 22.06.2019 17:30, funnybugy16
How does the entropy of steam compare to the entropy of ice?
Answers: 2
In a cathode ray tube in an old tv, electrons are acceler-ated from rest with a constant acceleratio...
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