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3 years ago

Holes drilled several kilometers into Earth’s crust provide direct evidence about Earth’s interior in the form of

Physics

2 answers:

aleksandrvk [35]3 years ago

8 0

Answer:

Explanation:

They made a hole in the earth, and was only able to scratch the crust but found lots of rocks to help them learn about the earth

ivanzaharov [21]3 years ago

6 0

C I hope this helps cccccccccccccccccccc

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Below is a circuit schematic of sources and resistors (Figure 3). VS = 10V , R1 = 100Ω, R2 = 50Ω, R3 = 25Ω, IS = 2A. Calculate t

lorasvet [3.4K]

Answer:

$V_3\approx 4.28\,\,V$

$I_1=0.0572\,\,amps$

$I_3\approx 0.171\,\,amps$

Explanation:

Notice that this is a circuit with resistors R1 and R2 in parallel, connected to resistor R3 in series. It is what is called a parallel-series combination.

So we first find the equivalent resistance for the two resistors in parallel:

$\frac{1}{Re}= \frac{1}{R1}+\frac{1}{R2}\\\frac{1}{Re}= \frac{1}{100}+\frac{1}{50}\\\frac{1}{Re}= \frac{3}{100}\\Re=\frac{100}{3} \,\,\Omega$

By knowing this, we can estimate the total current through the circuit,:

$Vs=I\,*\,(\frac{100}{3} +25)\\10=I\,*\,\frac{175}{3} \\I=\frac{30}{175} \,amps$

So approximately 0.17 amps

and therefore, we can estimate the voltage drop (V3) in R3 uisng Ohm's law:

$V_3=\frac{30}{175} *\,25=\frac{30}{7} \approx 4.28\,\,V$

So now we know that the potential drop across the parellel resistors must be:

10 V - 4.28 V = 5.72 V

and with this info, we can calculate the current through R1 using Ohm's Law:

$I_1=\frac{V_1}{R_1} =\frac{5.72}{100} =0.0572\,\,amps$

4 0

3 years ago

PLEASE ASWR How heavy is the object if it takes 7N to push up a ramp that is 35m long and 9m high?

DiKsa [7]

Answer:

Explanation:

6 0

2 years ago

Read 2 more answers

Just think about this.

diamong [38]

This ain’t the place, bud. If you have a QUESTION, then you can post it here.

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2 years ago

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Any five physics problems

kow [346]

Explanation:

There are still some questions beyond the Standard Model of physics, such as the strong CP problem, neutrino mass, matter–antimatter asymmetry, and the nature of dark matter and dark energy.

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3 years ago

If a taxi cab travels 45.8 m/s for 146 s, how far did it travel?<br> Your Answer:

Crazy boy [7]

Answer:

6.68 km

Explanation:

distance = speedxtime

45.8 x 146

6686.6 m

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3 years ago