4 years ago

Alloys are mixtures of ________.

Physics

2 answers:

lara [203]4 years ago

7 0

The correct answer is going to be

E.Metals

Hunter-Best [27]4 years ago

5 0

Answer:

e.metals

Explanation:

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A motorbike accelerates from 15m/s to 25m/s in 15 seconds.

RSB [31]

distance traveled by a uniformly accelerated bike is given as

$d = \frac{v_f + v_i}{2} (t)$

here we know that

$v_f = 25 m/s$

$v_i = 15 m/s$

$t = 15 s$

now we will have from above equation

$d = \frac{15 + 25}{2} (15)$

$d = 20 (15) = 300 m$

so it will cover the total distance of 300 m

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4 years ago

what distance is a book from the floor if the book contains 196 joules f potential energy and has a mass of 5 kg?

AleksAgata [21]

E=mgh. 196=5kg*9.81m/s^2*h. So h=196/(5*9.81)=4m

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4 years ago

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vovikov84 [41]

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4 years ago

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Which is not an example of how an object gains elastic potential energy by stretching?

lora16 [44]

C because you don’t put a force of which you choose and the force wouldn’t be strong enough

4 0

4 years ago

A runner taking part in the 200-m dash must run around the end of a track that has a circular arc with a radius of curvature of

Leto [7]

Answer: $2.27\ m/s^2$

Explanation:

Given

Length of the race track $L=200\ m$

the radius of curvature of the track $r=29.5\ m$

time taken to run on track is $t=24.4\ s$

Speed of runner is

$\Rightarrow v=\dfrac{L}{t}=\dfrac{200}{24.4}\\\\\Rightarrow v=8.196\ m/s$

Centripetal acceleration is

$\Rightarrow a_c=\dfrac{v^2}{r}=\dfrac{8.196^2}{29.5}\\\\\Rightarrow a_c=2.27\ m/s^2$

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3 years ago