Chemistry
A small hole in the wing of a space shuttle requires a 12.8cm^2 patch. What is the patch's area in square kilometers (km^2)? if the patching material costs NASA 3.21/in^2, what is the cost of the patch?
College Physics
An electron travels at a speed of 0.700c. What is its kinetic and total energy? I got, but this is not right. K , E =3.27×10−14,1.14×10−13 J Thanks for your help
college physics
Sirius is about 9.0 light-years from Earth. To reach the star by spaceship in 10 years (ship time), how fast must you travel? How long would the trip take according to an Earth-based observer? How far is the trip according to you?
colleg physics
Sirius is about 9.0 light-years from Earth. To reach the star by spaceship in 10 years (ship time), how fast must you travel? How long would the trip take according to an Earth-based observer? How far is the trip according to you?
College Physics
Sirius is about 9.0 light-years from Earth. To reach the star by spaceship in 10 years (ship time), how fast must you travel? How long would the trip take according to an Earth-based observer? How far is the trip according to you?
Physics
A solar cell is designed to have a nonreflective film of a transparent material for a wavelength of 600 nm. Will the thickness of the film depend on the index of refraction of the underlying material in the solar cell? nsolar > nfilm and nfilm = 1.25, what is the minimum th...
Physics
A telescope has a magnification of 20 and consists of two converging lenses, the objective and the eyepiece, fixed at either end of a tube 60.0 cm long. Assuming that this telescope would allow an observer to view a lunar crater in focus with a completely relaxed eye, what is ...
Physics
A standard 14.6-inch or .360 meter computer monitor is 1024 pixels wide and 768 pixels tall. Each pixel is a square approximately 281 micrometers on each side. If the maximum distance between the screen and your eyes at which you can just barely resolve two adjacent pixels is ...
algebra
A person is 3 times as old as aonther person but in 15 years she will only be 2 times as old. I found the answer the younger person is 15 years old and the older person is 45 years old. But 15 years from now the younger person will be 30 years old and the older person will be ...
College Physics
Two long, straight, parallel wires 8.0 cm apart carry currents in opposite directions. Use the right-hand source and force rules to determine whether the forces on the wires are attractive or repulsive. a)Repulsive b)Attractive If the wires carry equal currents of 4.0 A, what ...
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