Category: Physics

What is a distance versus time graph? A distance-time graph shows how far an object has travelled in a given time. It is a simple line graph that denotes distance versus time findings on the graph. Distance is plotted on the Y-axis. What is the significance of positive and negative slope? A higher positive slope […]

What is an example of air having weight? Why are the balloons the same with water and different with air? When you blew up the balloon, your lungs and the stretchy rubber compressed the air inside. Because it was compressed, the air inside the balloon is denser than the air outside. You have more molecules […]

Is 4 laps a mile? 4 laps = 1 mile if it’s a 440 yard track. Newer tracks are often 400 meters, which is slightly less than 440 yards. 4 laps around a 400 meter track is about 0.99 miles. How many miles is 4 laps around a track? Here are some other measurements that […]

Which tool has the greatest degree of precision? pipette Which of the following measurements has the greatest precision? “100.00” has the highest precision. What is the difference between accuracy and precision? Accuracy refers to how close measurements are to the “true” value, while precision refers to how close measurements are to each other. Which of […]

What is the message of the last question? The message of the story is that this is the last and ultimate question that any sentient species will ever ask, is there a way to survive forever? The answer, that Asimov posits, is that any entity advanced enough to get past the laws of entropy would, […]

What might happen if there is no gravity? With less gravity, it is harder to keep your body strong. If the Earth’s gravity is lost, all items held to the Earth’s surface by gravity would float away. That includes the atmosphere, water, people, cars and animals. If an object were secured strongly to the Earth, […]

Can entropy be stopped? Entropy isn’t a “process”, it’s a state variable of a system, like energy. It doesn’t make sense to say “stop entropy”. That’s also too vague. Entropy can be decreased locally but by using a larger encompassing system and at the expense of increasing overall entropy in the larger system. Is entropy […]

What is the difference between uniform and constant acceleration? During uniform motion, velocity remains constant with time and change in velocity for any time interval is zero. Constant velocity is the velocity whose direction as well as magnitude remains constant. Uniform velocity is the velocity whose magnitude(only) increases with equal intervals of time. What does […]

How can a skinny girl gain weight and muscle? 10 More Tips to Gain Weight Don’t drink water before meals. This can fill your stomach and make it harder to get in enough calories. Eat more often. Drink milk. Try weight gainer shakes. Use bigger plates. Add cream to your coffee. Take creatine. Get quality […]

What is an explanation of a natural phenomenon called? Hypothesis. A testable explanation for a natural phenomenon. Scientific inquiry. How is a control group treated in a scientific experiment? In a scientific study, a control group is used to establish a cause-and-effect relationship by isolating the effect of an independent variable. Researchers change the independent […]