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3 years ago

What continent is partially in all four hemispheres

Physics

1 answer:

Anna007 [38]3 years ago

7 0

Answer:

Africa

Explanation:

Africa is the only continent that is located in all four hemispheres. Both the equator, and Prime Meridian run through Africa. So, the continent of Africa has parts laying in the Eastern, Western, Northern and Southern Hemispheres.

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If you walk 4mi north and then 2mi south what is your total displacement?

sergeinik [125]

Answer:

your total displacement is 2 miles north

Explanation:

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3 years ago

What is the approximate size of the smallest object on the earth that astronauts can resolve by eye when they are orbiting 250 k

Alex17521 [72]

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3 years ago

A truck is traveling at a speed of 50 km/h. What happens when the truck slows down?

MaRussiya [10]

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Explanation:

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3 years ago

What is your average velocity if you drive a distance of 113 km at a speed of 47 km/h, then the same distance at a speed of 66 k

Sauron [17]

Answer:

$V_{avg}=54.90\ km/h$

Explanation:

Given that

Drive 113 km at 47 km/h and another 113 km at 66 km/h.

When distance is same then average velocity can be found by using below formula:

$V_{avg}=\dfrac{2V_1V_2}{V_1+V_2}$

Here

$V_1= 47\ km/h$

$V_2= 66\ km/h$

Now by putting the values

$V_{avg}=\dfrac{2V_1V_2}{V_1+V_2}$

$V_{avg}=\dfrac{2\times 47\times 66}{47+66}$

$V_{avg}=54.90\ km/h$

8 0

4 years ago

Read 2 more answers

A puck of mass m moving at speed v on a horizontal, frictionless surface is stopped in a distance d because a hockey stick exert

MArishka [77]

Answer:

-36.71%

Explanation:

Using the Generalized Work Energy Principle, the puck is brought to rest by an external force and the system has no kinetic energy

$U_i+W=U_f\\K_i+W=K_f\\\\0.5mv_i^2+F\bigtriangleup xcos\theta=0J\\\\0.5mv_i^2+F\bigtriangleup xcos180\textdegree=0J\\\\0.5mv_i^2=F\bigtriangleup x\\\\F=\frac{0.5mv_i^2}{2\bigtriangleup x}$

#Denote the stopping distance and force required with a prime and observe from (i) that:

$F\infty\frac{1}{\bigtriangleup x}\\\\F\prime =F.\frac{\bigtriangleup x}{(\bigtriangleup x)\prime}\\\\$ #If stopping distance increases by a factor of 79/50;

$F\prime=F.(79/50)^-^1\\\\F\prime=\frac{50F}{79}\\\\\therefore \bigtriangleup F=F\prime -F\\\\\bigtriangleup F=\frac{50F}{79}-F=-\frac{29F}{79}$

So F decreases by 36.71% . we expect force to reduce since the same amount of work is repeatedly done on the system over a long distance.

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4 years ago