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Mnenie [13.5K]
2 years ago
5

The coordinates of a bird flying in the xy plane are given by x(t)=αt and y(t)=3.0m−βt2, where α=2.4m/s and β=1.2m/s2

Physics
1 answer:
mr_godi [17]2 years ago
8 0
We've seen this introduction to a question posted several times before here on Brainly, but it always stops right there. What is the question ? ? ?
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What is the deceleration of the rocket sled if it comes to rest in 1.1 s from a speed of 1000 km/h? (such deceleration caused on
Wewaii [24]

The deceleration of the rocket sled if it comes to rest in 1.1 s from a speed of 1000 km/h is  252.52\ m/s^2.

The acceleration in opposite direction is known as the deceleration. Basically the deceleration is negative value of the acceleration since the negative sign depicts its opposite in direction.

The given data:

time, t = 1.1 s

initial speed, u = 1000 km/h = \frac{2500}{9}\ m/s

final speed, v = 0 m/s

So we will be using the equation of motion, that is,

v = u + at

\therefore 0=\frac{2500}{9} + a(1.1)

\Rightarrow a=-\frac{2500}{9(1.1)}

\therefore a = - 252.52 \ m/s^2

Hence , the deceleration of the rocket is  252.52\ m/s^2.

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6 0
1 year ago
What feature on the periodic table separates the metals and non metals?
sertanlavr [38]
Answer: the amphoteric line, mental- nonmetal line, metalloid line, staircase, semimetal line. it can be called any of these names
7 0
3 years ago
At what height does a 1000-kg mass have a potential energy of 1J relative to the ground? Be sure to show all work to support you
nikdorinn [45]
Potential energy = (mass) x (gravity) x (height)

       1 joule  =  (1,000 kg) x (9.8 m/s²) x (height)

       Height =  1 joule / (9,800 newtons)

                   =  1/9800 meter

                   =  0.000102 meter

                   =   0.102 millimeter    (rounded) 
7 0
3 years ago
what is the final potential if 4j of work done to move 2c of charge from a point having initial potential of 5
a_sh-v [17]

Answer:

It’s 1

Explanation:

Potential difference =Work Done (in Joules)/ Total Charge(in Coulomb)

So Here

Potential difference =2J/2C

=1V

thankyou : )

7 0
2 years ago
Which of the following, if eliminated, would completely prevent the greenhouse effect from occurring on earth?
DochEvi [55]

The green house gases can be reduced up to a limit by eliminating the fossil fuels and chlorofluorocarbons. Fossil fuels are the major source of greenhouse gases.

<h3>What are green house gases?</h3>

Greenhouse gases are those which are capable of  intense absorption of  the temperature  radiated from the earth's surface and make the earth atmosphere warm up.

Greenhouse gases are the main cause of global warming.  Carbon dioxide, methane oxides of nitrogen and sulphur are the green house gases.

Fossil fuels are rich in hydrocarbons and they release these gases when  burned. Mainly methane and other hydrocarbon gases intensely absorbs the temperature which is radiating away from the earth and thus the heat is trapped inside.

Therefore, by eliminating fossil fuels, greenhouse effect can be prevented.

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7 0
1 year ago
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