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ale4655 [162]
3 years ago
9

Solve for real t: -25=20t-5t^2

Physics
1 answer:
PolarNik [594]3 years ago
3 0
Answer should be <span>t=<span>−<span><span>1<span> or  </span></span>t</span></span></span>=<span>5</span>
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A student wants to determine the impulse delivered to the lab cart when it runs into the wall. The student measures the mass of
forsale [732]
Impulse = Force * times and also Impulse = change in momentum.

Given that the mass does not change, change if momentum = mass * (final velocity -  initial velocity)

Given that you know mass and initial velocity (which is the velicity before the cart hits the wall) you need the final velocity (which is the velocity after the cart hits the wall).

Answer: the velocity of the cart after it hits the wall.
6 0
3 years ago
What pressure will 14. 0 g of co exert in a 3. 5 l container at 75°c?
Ronch [10]

The pressure will 14. 0 g of co exert in a 3. 5 l container at 75°c is 4.1atm.

Therefore, option A is correct option.

Given,

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Universal gas constant R= 0.082057L

Number of moles in 14 g of CO is

n= mass/ molar mass

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= 0.5 mol

As we know that

PV= nRT

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P = 14.277/3.5

P = 4.0794 atm

P = 4.1 atm.

Thus we concluded that the pressure will 14. 0 g of co exert in a 3. 5 l container at 75°c is 4.1atm.

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5 0
1 year ago
ECONOMICS !!!!
gulaghasi [49]

Answer:

B

Explanation:

Absolute advantage is the capability of a commercial entity to produce goods using fewer resources compared to rivals. Using the same inputs, an entity with an absolute advantage produces a larger output compared to competitors. It means the firm has a lower marginal cost of production. Therefore, its products will have the lowest prices in the market.  

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Sphinxa [80]

Answer:

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Explanation:

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Andru [333]
D I think I'm not sure!?.
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3 years ago
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