How does a crowbar work?

Which of the following would lead to the smallest entropy loss in the surroundings? A. An exothermic reaction in a cold environment. B. An endothermic reaction in a hot environment. C. An endothermic reaction in a cold environment. D.

A hockey puck is sliding along the ice with nearly constant momentum ‹ 7, 0, 4 › kg · m/s when it is suddenly struck by a hockey stick with a force ‹ 0, 0, 2100 › N that lasts for only 7 milliseconds (7*10-3) s.

When Jenny writes, the pencil exerts a force of 5n on the paper. The area of the contact is 0.5mm square. Calculate the pressure.

Describe what is happening to an object in each of the following three states: 1) The object has positive acceleration 2. The object has negative acceleration 3. The object has an acceleration of zero

The charge on a proton

Use your knowledge of the state of matter and the other physical properties of matter to write an explanation for what may have caused the following situation: Although it hasn't rained in a week, every morning the grass and the car windows are wet.

What is three example of technology

Lisa has three classes that each last 50 minutes qhat ia the total nuber of minutes of minutes of the three classe?

Which has a greater speed a heron hat travels 600m in 60 seconds or a duck that travels 60 m in 5 seconds? Explain

A machine shovel moves dirt at the rate of 1,100 pounds of dirt 1 foot in 1 second. How many horsepower is this?