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3 years ago

Assuming things about someone based on your experiences with similar people you have encountered is called

Physics

1 answer:

AysviL [449]3 years ago

3 0

Answer:

presumptuous

Explanation:

it's what you call someone who assumes something

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Two stationary positive point charges, charge 1 of magnitude 3.95 nC and charge 2 of magnitude 1.80 nC, are separated by a dista

adelina 88 [10]

Answer:

the speed of the electron from charge q1 is 7.17×10⁶ m/s

Explanation:

Given the data in the question;

the potential at the center of the two charges will be;

V = k( q1/(d/2) + q2/(d/2)

so we substitute

V = (9×10⁹)( (3.95×10⁻⁹/(0.39/2) + 1.80×10⁻⁹/(0.39/2)

V = 265.4 V

the potential at a distance of 10 cm from the charges will be

V = k( q1/(d1) + q2/(d2)

(d1 = 10cm = 0.1m and d2 = 39cm - 10cm = 29cm = 0.29m )

V' = (9×10⁹)( (3.95×10⁻⁹/0.1 + 1.80×10⁻⁹/0.29

V' = 411.4 V

Now, from the conservation of energy the speed of the electron from charge q1 will be;

E = ( V' - V) qe

1/2mv² = ( V' - V) qe

v² = [( V' - V) qe] / 1/2m

v =√ ([( V' - V) qe] / 1/2m)

v =√ ([2( V' - V) qe] / m)

we substitute

v =√ (2[( 411.4 - 265.4) 1.6×10⁻¹⁹] / 9.1×10³¹)

v = 7.17×10⁶ m/s

Therefore, the speed of the electron from charge q1 is 7.17×10⁶ m/s

6 0

3 years ago

How are mixtures and pure substances alike, and how are they different?

Novay_Z [31]

Mixtures and Pure Substances are different because a mixture is a combination of two pure substances, making in "impure"
Think about it like dog breeding. A "pure-bred" dog is like a pure substance, while a "mixed-breed" could be considered a mixture/

3 0

4 years ago

A tire is filled with air at 22oC to a gauge pressure of 240 kPa. After driving for some time, if the temperature of air inside

german

Answer:

7.8% of the original volume.

Explanation:

From the given information:

Temperature $T_1$ = 22° C = 273 + 22 = 295° C

Pressure $P_1$ = 240 kPa

Temperature $T_2$ = 45° C

At initial temperature and pressure:

Using the ideal gas equation:

$P_1V_1 =nRT_1$

making V_1 (initial volume) the subject:

$V_1 = \dfrac{nRT_1}{P_1}$

$V_1 = \dfrac{nR*295}{240}$

Provided the pressure maintained its rate at 240 kPa, when the temperature reached 45° C, then:

the final volume $V_2$ can be computed as:

$V_2 = \dfrac{nR*318}{240}$

Now, the change in the volume ΔV = V₂ - V₁

$\Delta V = \dfrac{nR*318}{240}- \dfrac{nR*295}{240}$

$\Delta V = \dfrac{23nR}{240}$

∴

The required fraction of the volume of air to keep up the pressure at (240) kPa can be computed as:

$= \dfrac{\dfrac{23nR}{240}}{ \dfrac{295nR}{240}}$

$= {\dfrac{23nR}{240}} \times { \dfrac{240}{295nR}}$

$= 0.078$

= 7.8% of the original volume.

3 0

3 years ago

a basketball rolled off the edge of a table that has a height of 1.2m. The ball took 0.65 s to hit the ground 0.96m from the bas

Citrus2011 [14]

3.70 is correct. Hope that helped! :)

8 0

3 years ago

The round opening in the dome of the pantheon is called what?

mariarad [96]

<h2>Answer: Oculus </h2>

In the architectural context, the oculus is a small hole or circular window, built with the intention of entering light, air in circulation or simply for decorative purposes.

One of the oldest oculus is the one located at the Roman Pantheon (temple), a construction that began in the 27th century BC on the orders of Marcus Agrippa for Augustus and was completed by order of the Emperor Hadrian.

4 0

3 years ago