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3 years ago

You push on a box with a force of 300 N directly north. Another person pushes the box with a

Physics

1 answer:

tangare [24]3 years ago

7 0

Answer:

$resultant \\ \: F = \sqrt{ {300}^{2} + {600}^{2} } \\ = \sqrt{450000} \\ = 670.82 \: newtons$

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A particle moves in a straight line and has acceleration given by a(t) = 12t + 10. Its initial velocity is v(0) = −5 cm/s and it

soldi70 [24.7K]

Answer:

The position function is $s_{t}=2t^3+5t^2-5t+9$ .

Explanation:

Given that,

Acceleration $a =12t+10$

Initial velocity $v_{0} = -5\ cm/s$

Initial displacement $s_{0}=9\ cm$

We know that,

The acceleration is the rate of change of velocity of the particle.

$a = \dfrac{dv}{dt}$

The velocity is the rate of change of position of the particle

$v=\dfrac{dx}{dt}$

We need to calculate the the position

The acceleration is

$a_{t} = 12t+10$

$\dfrac{dv}{dt} = 12t+10$

$a_{t}=dv=(12t+10)dt$

On integration both side

$\int{dv}=\int{(12t+10)}dt$

$v_{t}=6t^2+10t+C$

At t = 0

$v_{0}=0+0+C$

$C=-5$

Now, On integration again both side

$v_{t}=\int{ds_{t}}=\int{(6t^2+10t-5)}dt$

$s_{t}=2t^{3}+5t^2-5t+C$

At t = 0

$s_{0}=0+0+0+C$

$C=9$

$s_{t}=2t^3+5t^2-5t+9$

Hence, The position function is $s_{t}=2t^3+5t^2-5t+9$ .

7 0

3 years ago

Which would heat up faster cotton or plastic

Angelina_Jolie [31]

Answer:

Plastic heats up faster :)

Explanation:

5 0

3 years ago

PLEASE HELP

siniylev [52]

A person standing on the moon watching the earth rotate

3 0

3 years ago

Read 2 more answers

Which group's right to vote is protected by the Nineteenth Amendment? Question 7 options: African Americans Native Americans 18-

lisabon 2012 [21]

7. The nineteenth amendment protects the right to vote of 18 year old women.

8.The 24th amendment eliminated poll taxes and increases voting rights in the United States.

9.National voter Registration allowed the option for adults to register vote when they obtain or renew a driver's license.

10.Three steps in voting process are registering to vote, preparing to vote and casting a ballot.

11.The statement that was not an effect of the United States Supreme Court's ruling in Bush vs Gore is Tennessee's electoral collage votes went to Al Gore.

12.The general election requires the United States choose a president

13.The type of election that is held to fill a public office that is left vacant when an official resigns is special election.

14.The position that a person actually vote for when a voter chooses a candidate for president is an elector in the elector college.

15.A possible candidate for president would form an exploratory committee to see how much support he or she can expect.

4 0

3 years ago

Read 2 more answers

Imagine a particular exoplanet covered in an ocean of liquid methane. At the surface of the ocean, the acceleration of gravity i

AlladinOne [14]

Answer:

Explanation:

Atmospheric pressure = 7 x 10⁴ Pa

force on a disk-shaped region 2.00 m in radius at the surface of the ocean due to atmosphere = pressure x area

= 7 x 10⁴ x 3.14 x 2 x 2

= 87.92 x 10⁴ N

b )

weight, on this exoplanet, of a 10.0 m deep cylindrical column of methane with radius 2.00 m

Pressure x area

height x density x acceleration of gravity x π r²

= 10 x 415 x 6.2 x 3.14 x 2 x 2

=323168.8 N

c ) Pressure at a depth of 10 m

atmospheric pressure + pressure due to liquid column

= 7 x 10⁴ + 10 x 415 x 6.2 ( hρg)

= 7 x 10⁴ + 10 x 415 x 6.2

(7 + 2.57 )x 10⁴ Pa

9.57 x 10⁴ Pa

8 0

3 years ago