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Lesechka [4]
2 years ago
15

Which of the following has the greatest magnitude? 30 Newtons 1 Newton . 10 Newtons

Physics
1 answer:
Zinaida [17]2 years ago
5 0

Answer:

30 newtons

Explanation:

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3 years ago
Measure the mass of a coin using a triple beam balance.
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Explanation:

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A driver in a 2000 kg Porsche wishes to pass to pass a slow-moving school bus on a four-lane road. What is the average power in
Kryger [21]

The average power is 3.0\cdot 10^6 W

Explanation:

First of all, we calculate the work done to accelerate the car; according to the work-energy theorem, the work done is equal to the change in kinetic energy of the car:

W=K_f -K_i= \frac{1}{2}mv^2-\frac{1}{2}mu^2

where :

K_f = \frac{1}{2}mv^2 is the final kinetic energy of the car, with

m = 2000 kg is the mass of the car

v = 60 m/s is the final speed of the car

K_i = \frac{1}{2}mu^2 is the initial kinetic energy of the car, with

u = 30 m/s is initial speed of the car

Soolving:

W=\frac{1}{2}(2000)(60)^2 - \frac{1}{2}(2000)(30)^2=2.7\cdot 10^6 J

Now we can find the power required for the acceleration, which is given by

P=\frac{W}{t}

where

t = 9 s is the time elapsed

Solving:

P=\frac{2.7\cdot 10^6}{9}=3.0\cdot 10^6 W

Learn more about power:

brainly.com/question/7956557

#LearnwithBrainly

8 0
3 years ago
How much time does it take for a car travelling at 5m/s in 21 metres
Paha777 [63]

Answer:

21/5 seconds or 4.2 seconds

Explanation:

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21=5 *Time

21/5=Time

4.2=time

7 0
3 years ago
Read 2 more answers
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I racked my brain for almost 10 minutes, until suddenly,
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You're breathing one right now !  So am I .

Air is a mixture of a lot of elements. 
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The other 0.036 percent is mainly Neon, Helium, Krypton,
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Then there are Carbon Dioxide and water vapor.
Yes, those are compounds.  But together, they add up
to very little of the air we breathe, and if both of them
suddenly disappeared, we would hardly notice it.

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2 years ago
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