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Setler [38]
4 years ago
12

A railroad freight yard switch engine on a straight track travels 1000.m to the end of the track ,then back 600. m ,then forward

300.m. a . What is the switch engine's final displacement from its starting position ? b. How far did it travel?
Physics
1 answer:
Kay [80]4 years ago
4 0
It’s final displacement is 700 meter and it traveled 1900 meter, please hit the thanks button
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A pure lead bar 10 cm long is maintained with one end at T=300 K and the other at 310 K. The thermoelectric potential difference
dangina [55]

Answer:1.28v/k

Explanation:

Thermoelectric power is the same as Seebeck coefficient.

So the formula is S =Vemf/Th - Tl

= 12.8/310-300

S= 12.8/10

=1.28V/T

7 0
3 years ago
Take the following measured gauge (or gage) pressures and convert them to absolute pressures in both kPa and psi units for an am
mamaluj [8]

Answer:

Explanation:

Given

ambient Pressure =98.10 kPa

(a)gauge pressure 152 kPa

we know

Absolute pressure=gauge pressure+Vacuum  Pressure

P_{abs}=152+98.10=250.1 kPa or 36.27 psi

(b)P_{gauge}=67.5 Torr or 8.99 kpa

as 1 Torr is 0.133 kPa

P_{abs}=8.99+98.10=107.09 kPa or 15.53 psi

(c)P_{vaccum}=0.1 bar or 10 kPa

Thus absolute pressure=98.10-10=88.10 kPa or 12.77 psi

as 1 kPa is equal to 0.145 psi

(d)P_{vaccum}=0.84 atm  or 85.113 kPa

as 1 atm is equal to 101.325 kPa

P_{abs}=98.10-85.11=12.99 kPa or 1.88 psi

6 0
3 years ago
Four students measure the mass of a standard mass that has an accepted value of 150.0 g. They post their results in a table.
Eddi Din [679]

Explanation:

This problem seeks to ensure that the student comprehends the meaning of precision and accuracy.

These two key terms are used to express how reliable experimental values obtained are.

  • Precision is the ability to consistently reproduce a result.
  • Accuracy is the nearness of the measure value to the true value.
  • The different between the measured and true values gives the error in the result.

In the problem given, the most accurate reading would be one that has value close to the standard mass of 150g. Any student that reports this value would be reported as accurate.

The precise reading would be for the student that is able to repeatedly produce the same kind of values. This is irrespective of whether the values are close to the true value or not.

learn more:

Statistics brainly.com/question/4401748

#learnwithBrainly

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3 years ago
HELP PLS<br> NO EXPLANATION NEEDED
GalinKa [24]

Explanation:

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u = √8.0556

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3 0
3 years ago
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What forces are acting on the balloon as it is held in a person hand?​
choli [55]

Answer: DADDY

Explanation:

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