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The body placed on a car as shown in the figure is pulled by a force of , and the car moves with it. What force accelerates the car?
A body slides down a 30 degree slope with zero initial velocity. A second, 45 degree slope faces the first slope, so the body will slide up that slope after reaching the bottom of the first. Assuming that the body can change between slopes smoothly and that there is no friction, what height will the body reach on the second slope?
The two arrows in the figure show two thermodynamic processes of a certain amount of ideal gas. The dashed line is a hyperbola. Which of the following statements is not true?
Three objects are moving along a circle. The graph shows their speed as a function of time. Which of the following statements is true?
A negatively charged plastic rod is brought near the ball of an uncharged electroscope. Does the electroscope react to that?
Choose the correct heading.Set aside a few minutes after you finish taking your notes to go back and tweak them. While you still have fresh memories of the lecture, plug in any points you might have missed, flesh out vague notations, and add extra explanations you feel you’ll need later. And really, do this right away – it’s easy to forget the details once you head to your next class.
Choose the correct heading.This is more of a cool factor, but the fact remains that dogs are very trainable animals. You can train them to dance, spin, speak, rollover, get you a soda can, etc. you want an entertainment showpiece for your party? Train your dog to do some simple tricks and you’ll own the limelight (actually your dog will).