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iris [78.8K]
4 years ago
5

What is the definition of a vector?

Physics
1 answer:
Zina [86]4 years ago
8 0
A quantity having direction as well as magnitude, especially as determining the position of one point in space relative to another.

for ex: A vector quantity has magnitude and direction.
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Give three examples of unbalanced forces in your everyday life. HELP FAST PLZ
evablogger [386]
1. Kicking a soccer ball
2.Playing tug of war
3.Bouncing a Ball
3 0
3 years ago
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Explain two ways of magnetising an object​
Nina [5.8K]

Answer:

There are two methods generally used to magnetize permanent magnets: static magnetization and pulse magnetization.

5 0
3 years ago
Assume that the operating cost of a certain truck (excluding driver's wages) is 12+x/6 cents per mile when the truck travels at
podryga [215]

Answer:

x = 60 mph

Explanation:

Given that the operating cost is

c = 12 + \frac{x}{6} cents per mile

total miles covered is given as

d = 400 miles

so total cost of drive is given as

C = (12 + \frac{x}{6})(4) $

time taken by the truck to move the distance is given as

t = \frac{400}{x}

So total earnings of the driver is given as

E = \frac{400}{x} \times 6 $

now total profit of the driver is given as

P = \frac{2400}{x} - (48 + \frac{2x}{3}) $

to maximize the profit we have

\frac{dP}{dx} = 0

-\frac{2400}{x^2} + \frac{2}{3} = 0

so we have

x = 60 mph

8 0
3 years ago
Compared to yellow light, orange light has
Mkey [24]
<span>So we want to know what does orange light has when we compare it to yellow light. So when we take a look at the electromagnetic spectrum we can see that orange color has longer wavelength than yellow color. So the correct answer is A. alonger wavelength.</span>
7 0
3 years ago
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a sprinter with a mass of 80kg accelerates uniformly from 0 m/s to 9 m/s in 3 s. a.)what is the runners acceleration? b.) what i
Katyanochek1 [597]
Part A: 
Acceleration can be calculated by dividing the difference of the initial and final velocities by the given time. That is,
             a = (Vf - Vi) / t
where a is acceleration,
Vf is final velocity,
Vi is initial velocity, and
t is time

Substituting,
            a = (9 m/s - 0 m/s) / 3 s = 3 m/s²
<em>ANSWER: 3 m/s²</em>

Part B: 
From Newton's second law of motion, the net force is equal to the product of the mass and acceleration,
               F = m x a
where F is force,
m is mass, and 
a is acceleration

Substituting,
              F = (80 kg) x (3 m/s²) = 240 kg m/s² = 240 N

<em>ANSWER: 240 N </em>

Part C: 
The distance that the sprinter travel is calculated through the equation,
         d = V₀t + 0.5at²

Substituting,
            d = (0 m/s)(3 s) + 0.5(3 m/s²)(3 s)²
             d = 13.5 m

<em>ANSWER: d = 13.5 m</em>

3 0
3 years ago
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