Recent content by GetPhysical

I used my telescope and a Solar filter to take a shot of the sun and on the bottom half of the circle (due to the mirrors inverting the image) there is a blue outline and on the other side is a red outline. Is this a display of the dopplar effect or just a coincidince?

The bugs are just not heavy enough to break the surface tension of the water.

They still apply the same force. The only thing is the block that was moving initially is carrying momentum when it collides with the second.

Each aspect is a different system. The train itself and then the car. Inside the car the runner is going at 20km/hr. Inside the train the runner is going 100km/hr regardless of how fast he's running because the car is a lone system. Since the train is traveling at 100km/hr everythig inside the...

I think its just your hearing. Unless you have some super computer nerd friend who somehow rigged your phone top play through the TV.

This would be very difficult because when the coin is dropped it will flip over and over so the same surface will not always be facing the ground. When the flat side is down the resistance will be more than when the thin edge is facing down. But like Russ said it would be so small and would not...

I just received an email with a powerpoint someone put together. It said that Mars would come within 35,000,000 miles of Earth on August 27th and would appear as large as the Moon. Does anyone have any other information on this? Is it even true?

You can use Kepler's law p^2=a^3. The period squared is equal to the semi-major axis cubed.

Im not sure gravity travels. It is only a force that is determined by the masses and distance apart of two distinct objects. The greater the masses or the smaller the distance, the higher the gravity. Its not all that difficult. Does not matter if it's gas, liquid, or solid. Gravity depends on...

Please explain to us how a spring gains mass by being compressed.

That's exactly right jtbell. I should have thought of posting that fact. That is probably the best example/proof that gases are affected by gravity. The Earth's gravity is what holds our atmosphere in place. The same is true for all celestial bodies with atmospheres. It explains why the moon and...

Hey man you should be fine if you don't concentrate your landing in the center of the board. Try to have your feet positioned on the trucks and you will be good. Do post a clip. Id like to see what youre doing.

I am currently reading about this in Einstein's writings. When the person on the train drops the ball and looks down he just sees it fall straight down because it is moving at the same velocity he is. However, a person standing on a platform (not in motion) sees the ball fall down and...

Anything that has mass is indeed affected by gravity. F = G(m1m2)/r^2 Gas is mass. It's not very dense, but it is still mass.