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ANEK [815]
3 years ago
12

Can I get answers 14 through 18 please? Plz show work number 18!!!

Physics
1 answer:
kicyunya [14]3 years ago
8 0
14). c
15). c
16). a little less than d
17). a

18).
-- The parallel combination of 4Ω, 6Ω, and 10Ω is 1.935Ω .

-- The battery sees 1.935Ω in series with 2Ω. That's 3.935Ω .

-- The voltage across the 3 parallel resistors is (1.935/3.935)
of the total battery voltage. That's about 5.9 volts.

-- I = V/R .
The current in the 10Ω resistor is (5.9v/10Ω) = 0.59 Amp. (choice-a)
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Answer:

v = 7671.57 m/s

T = 1.55 hours

Explanation:

mass of Earth, M = 6 x 10^24 kg

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Velocity is given by

v=\sqrt{\frac{GM}{R+h}}

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G = 6.657 x 10^-11 Nm^2/kg^2

v=\sqrt{\frac{6.67\times 10^{-11}\times 6\times 10^{24}}{6800\times 10^{3}}}

v = 7671.57 m/s

Let T b the period

T=\frac{2\pi (R+h)}{v}

T=\frac{2\times 3.14(6800\times 1000)}{7671.57}

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3 years ago
(e) For photons of energy 7.10 eV, what stopping potential would be required to arrest the current of photoelectrons
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2.37eV stopping potential would be required to arrest the current of photoelectrons.

<h3 /><h3>What is stopping potential ?</h3>

The minimal negative voltage that must be provided to the anode to halt the photocurrent is known as stopping potential. When expressed in electron volts, the maximal kinetic energy of the electrons is equal to the stopping voltage.

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to learn more about stopping potential go to - brainly.com/question/4655588

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8 0
1 year ago
after a cannonball is fired into frictionless space, the amount of force needed to keep it going equals​
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Answer:

0 N

Explanation:

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if you stretch a spring with k = 2, with a force of 4N, the extension will be 2m. the work done by us here is 4x2=8J. in other words, the energy transferred to the spring is 8J. but, the stored energy in the spring equals 1/2x2x2^2=4J (which is half of the work done by us in stretching it).

8 0
3 years ago
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