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2 years ago

A Describe and explain what

Physics

2 answers:

dezoksy [38]2 years ago

4 0

Answer:

the extension will also double, unless the spring has reached its limit of proportionality because of Hooke's law: The extension of a spring is directly proportional to the force applied, provided that the limit of proportionality is not exceeded.

melomori [17]2 years ago

3 0

Answer:

The extension is directly proportional to the force applied.

ex: if the force is doubled, the extension doubles. This works until the limit of proportionality is exceeded.

Hope this helped~

Explanation:

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The 5.5 million vinyl long-playing (LP) records sold in the United States per year pales in comparison with the 1.26 billion dig

miv72 [106K]

Answer:

decline

Explanation:

Based on the scenario being described within the question it can be said that these types of firms are in the decline stage of the product life cycle. This stage refers to when a product has already passed it's peak potential and sales begin to decline until production is ultimately halted and the product dies off. Which is exactly what is happening to the LP's since everyone has moved on to digital downloads.

4 0

3 years ago

A railroad car of mass 2.50 3 104 kg is moving with a speed of 4.00 m/s. It collides and couples with three other coupled railro

ipn [44]

Answer:2.5 m/s

37.5KJ

Explanation:

Let $u_1, u_2 , v_f$ be the initial velocity of rail road car ,coupled cars & Final velocity of system respectively.

$m=2.50\times 10^{4}$

Conserving momentum

$mu_1+3mu_2=4mv_f$

$4m+6m=4mv_f$

$v_f=2.5 m/s$

Therefore Final velocity of system is 2.5m/s

(b)Mechanical Energy lost =Initial Kinetic Energy -Final Kinetic Energy

$Initial Kinetic Energy=\frac{1}{2}m\left ( 4^2\right )+\frac{1}{2}m\left ( 2^2\right )=14m J$

$Final Kinetic Energy=\frac{1}{2}4m\left ( 2.5^2\right )=12.5m J$

$Mechanical Energy lost=14m-12.5m=3.75\times 10^4=37.5 KJ$

4 0

3 years ago

Which material has the highest melting point?

Arturiano [62]

Carbon at 3500 degrees

5 0

3 years ago

Three points A, B, and C of unknown charges are at the corners of an equilateral triangle.

nasty-shy [4]

Answer: option d.

$Q_A= \frac{1}{2} Q_B=- \frac{1}{3} Q_C$

Explanation:

1) The direction of the field lines inform about the sign of the charges.

The field lines extend from the positive charges to the negative charges, so you can conclude that the charge C is positve and both charge A and charge B are negative:


Charge C: positive

Charge A: negative

Charge B: netative


2) The density of the lines (number of lines in a region) inform about the magnitude of the electric field.

Since the charges are at the same distance, the magnitude of the electric field informs directly about the magnitude of the force and that about the magnitude of the charges.

Since, there are the double of lines between C and B than between C and A, the magnitude of charge B is the double than the magnitud of charge A.

From the five options given (a throug e) the only that is consistent with that charges A and B have the same sign, that charge C has different sign, and that charge B is the double of charge A is:

$Q_A= \frac{1}{2} Q_B=- \frac{1}{3} Q_C$

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3 years ago

Is erosion a constructive or destructive force and why?

Andrei [34K]

Destructive force
It’s a force that slowly wears away mountains and other features on earths surface, such as erosion.

5 0

2 years ago