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Any color that will reflect blue light and white which is the reflection of all colors. Blue, cyan, or magenta. These are the simplest colors.

OK But my fear is this. The chrome sleeve is so calcified that I can not get it to turn. Do both sleeve and the stem loosen counter clockwise? Or is one treaded the other way? I may take the sleeve...

The Field force qE must equal the weight mg.

Depends what you are doing. If sighting then the use of your dominate eye is best. If using parallax, then the use of both eyes is OK.

My home was built in the 70's. My guest bath has a shower tub combination. There is a hot water handle, cold water handle and you pull up a diverter on the spout to the tub to send the water to the...

Big d forgot to tell you to square the velocities. V^2=Vo^2 + 2ax

If the speed of the boat you mean the speed at the given angle, this would be the resultant of the speed of the boat in the water directed straight across, and the speed of the current at right...

Good answers. Overcoming the initial inertia is the biggest problem then there is the problem of air resistance. A truck is (usually) not as dynamic as a car, and the faster you go the more air...

No it just goes clink clank pop when it is heating. Other wise no problems, low gas use etc. Thanks for the reply, and I will probably wait. I am afraid that when I crack the connections so the air...

I have a gas rheem hot water heater, that I don't know how old it is. It was in the house when I bought it 6 years ago. It looks OK and is in my storage shed. I was thinking about draining it (it...

To change Na to C you need to lose 5 protons. I am not a chemist, so I don't know how to make Sodium an isotope that could decay.

The problem as I see it is that the light is outside of the train, therefore there is no time dilation. The time for the light to reach the front of the train is 2.5 seconds. During this time the...

I had a ceiling fan (westinghouse) installed in a bedroom that has no light switch. The fan works great and so does the light (using chains). I want to add a remote so if we come in the room in the...