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Questions (26)
Three resistors of different values can be connected together in different configurations.
If all three resistors are used in a
1 answer
905 views
If a ball is thrown directly upwards with twice the initial speed of another, how much
higher will it be at its apex? A) 8 times
1 answer
5,206 views
What visible wavelengths will eject electrons from a a metal with a work function of 2.6 eV? Please show all work I am a little
1 answer
445 views
Lead 212/82Pb (atomic mass = 211.991871 u) is converted into bismuth 212/83Bi (atomic mass = 211.991255 u) via β- decay. What
1 answer
622 views
A proton is located at a distance of 0.430 m from a point charge of +8.30 µC. The repulsive electric force moves the proton
1 answer
2,623 views
A triply ionized beryllium atom (Be3+) has only one electron in orbit about the nucleus. What is the radius of the ion when it
5 answers
1,592 views
In the hydrogen atom the radius of orbit B is sixteen times greater than the radius of orbit A. The total energy of the electron
1 answer
676 views
Two slits are 0.144 mm apart. A mixture of red light (wavelength = 665 nm) and yellow-green light (wavelength = 565 nm) falls on
0 answers
531 views
Two slits are 0.144 mm apart. A mixture of red light (wavelength = 665 nm) and yellow-green light (wavelength = 565 nm) falls on
0 answers
574 views
The light shining on a diffraction grating has a wavelength of 470 nm (in vacuum). The grating produces a second-order bright
0 answers
1,247 views
The drawing shows a cross section of a plano-concave lens resting on a flat glass plate. (A plano-concave lens has one surface
1 answer
1,407 views
Red light (n = 1.520) and violet light (n = 1.538) traveling in air are incident on a slab of crown glass. Both colors enter the
1 answer
1,635 views
An object is placed in front of a converging lens in such a position that the lens (f = 14.0 cm) creates a real image located
1 answer
1,409 views
A converging lens ( f = 12.2 cm) is held 7.65 cm in front of a newspaper, the print size of which has a height of 1.88 mm. Find
0 answers
586 views
Red light (n = 1.520) and violet light (n = 1.538) traveling in air are incident on a slab of crown glass. Both colors enter the
1 answer
632 views
Two converging lenses are separated by 23.40 cm. The focal length of each lens is 12.20 cm. An object is placed 35.00 cm to the
1 answer
4,434 views
Sunlight strikes a fused quartz surface. At what angle of incidence is the reflected light completely polarized?
1 answer
571 views
A spotlight on a boat is y = 2.6 m above the water, and the light strikes the water at a point that is x = 8.6 m horizontally
1 answer
1,016 views
A light ray in air is incident on a water surface at a 44° angle of incidence. Find each of the following angles.
(b) the angle
1 answer
1,241 views
A generating station is producing 2.00 106 W of power that is to be sent to a small town located 7.0 km away. Each of the two
1 answer
580 views
A generating station is producing 2.00 106 W of power that is to be sent to a small town located 7.0 km away. Each of the two
1 answer
1,115 views
One component of a magnetic field has a magnitude of 0.080 T and points along the +x axis, while the other component has a
0 answers
510 views
A -6.00 µC charge is moving with a speed of 6.60 104 m/s parallel to a very long, straight wire. The wire is 5.00 cm from the
3 answers
734 views
An -particle has a charge of +2e and a mass of 6.64 10-27 kg. It is accelerated from rest through a potential difference that
0 answers
1,142 views
One component of a magnetic field has a magnitude of 0.080 T and points along the +x axis, while the other component has a
0 answers
607 views
A -6.00 µC charge is moving with a speed of 6.60 104 m/s parallel to a very long, straight wire. The wire is 5.00 cm from the
0 answers
609 views
Answers (5)
(x-1)(x+3)..... if you add 3 to negative one, you get two which is your middle number. If you multiply three and negative one, you get negative three which is your last number.
That is what the question says n is
So i did (5.29e-11)(81)= 4.2849e-9. But it still says that is incorrect...
I do not believe so, because in order to get the perimeter, you multiply the diameter by pi, and that would not ever give you a perimeter that is four times the diameter, because pi is 3.14
It still says this is not correct. I got 1.156e-4
