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Assoli18 [71]
3 years ago
6

PUBE: DATE: A particle is moving in a straight line with constant acceleration. it passes point p with speed of 2ms. ten seconds

later passes point q. the distance between p and q is 40 metres. find the speed of particle as it passes point q. ​
Physics
1 answer:
ddd [48]3 years ago
7 0

Answer:4m/s

Explanation:The car is moving with constant acceleration therefore average speed is equal to distance over time to find the distance covered we multiple the speed by the time which gives 20 metres meaning after every 20 metres it uses a speed of 2m/s so for 40 metres it's going to be 40 x2 over 20 giving us 4m/s

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A point charge is placed at the center of a spherical Gaussian surface. The electricflux ΦEischangedif(a) a second point charge
Simora [160]

Answer:

(b) the point charge is moved outside the sphere

Explanation:

Gauss' Law states that the electric flux of a closed surface is equal to the enclosed charge divided by permittivity of the medium.

\int\vec{E}d\vec{a} = \frac{Q_{enc}}{\epsilon_0}

According to this law, any charge outside the surface has no effect at all. Therefore (a) is not correct.

If the point charge is moved off the center, the points on the surface close to the charge will have higher flux and the points further away from the charge will have lesser flux. But as a result, the total flux will not change, because the enclosed charge is the same.

Therefore, (c) and (d) is not correct, because the enclosed charge is unchanged.

7 0
4 years ago
Which of the following accurately describes junction diodes?
tatiyna

Correct answer choice is :


D) In a forward-biased setup, large numbers of charge carriers will be pulled across the junction and result in a large current.


Explanation:


P-n junction diode is the easiest mode of all the semiconductor tools. Despite, diodes act a significant role in many electronic appliances. A p-n junction diode can be utilized to change the alternating current to the direct current. These diodes are applied in power supply accessories. Battery attached across the p-n junction causes the diode forward biased, pushing particles from the n-type to the p-type and starting holes in a different way. Electrons and holes cross the junction and join. Photons are carried off as the electrons and holes recombine.

8 0
3 years ago
Read 2 more answers
Quasars are thought to be the nuclei of active galaxies in the early stages of their formation. A typical quasar radiates energy
uranmaximum [27]

Answer:

1.7531 smu/yn

Explanation:

check the attached file below for answer and explanation.

6 0
4 years ago
Compare and contrast angular momentum and linear momentum. How are mass and velocity related to momentum?
Cerrena [4.2K]

Answer:

Linear momentum is mass multiplied by velocity, so it follows that angular momentum is the moment of inertia, measured in kilogram meters squared, multiplied by angular velocity, measured in radians per second. Radians are just an alternative to degrees.

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3 years ago
At what water temperature will additional heat energy need to be added before the temperature will change again?
Katyanochek1 [597]
That would be 0 degrees Celsius aka the melting point of water.... If you look at the diagram I attached you notice that at 0 degrees Celsius it is flat, this is because much heat is needed at this point for water to rise to 1 degree... It is the same for the boiling point (100)

Hope this helps! (If correct, please rank as brainliest answer) :)
7 0
3 years ago
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