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4 years ago

Agility refers to a person's level of flexibility.

Physics

1 answer:

tekilochka [14]4 years ago

7 0

False, agility is more about how fast you are

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Say we have two objects. Object A and B are the same size and shape. However object B is much heavier than Object A. If i were t

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Two objects that are the same volume will displace the same amount of water even if they have different masses.

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2 years ago

A car comes to a bridge during a storm and finds the bridge washed out. The driver must get to the other side, so he decides to

Verizon [17]

Answer:29.41 m/s

Explanation:

Given

Height of cliff 22.8 m

Height of river bank=2.4 m

width of river=60.0 m

Car can considered as projectile

Time travel to cover vertical distance=22.8-2.4=20.4 m

$h=ut+\frac{at^2}{2}$

$20.4=0+\frac{gt^2}{2}$

$t^2=4.163$

t=2.04 s

Range=60 m

Let u be the speed of car

ut=60

$u=\frac{60}{2.04}=29.41 m/s$

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3 years ago

A crystalline grain of nickel in a metal plate is situated so that a tensile load is oriented along the [111] crystal direction

hoa [83]

Given:

Applied stress, $\sigma = 0.45 MPa$

Critical Resolved Stress, $T_{cRss}= 0.242 MPa$

Solution:

a). According to the question, orientation of tensile load is along [1 1 1],

$\sigma = 0.45 MPa$

Now, for resolved shear stress, $\t_{Rss}$ along [1 0 1] within (1 1 T)

let ' $\theta$ ' be the angle between [1 1 1] and [1 0 1], then by coordinate formula:

$cos\theta$ = $\frac{1\times 1 + 1\times 0 + 1\times 1}{\sqrt{1^{2}+1^{2}+1^{2}\sqrt{1^{2}+0^{2}+1^{2}}}}$

$cos\theta$ = $\sqrt{\frac{2}{3}}$

let ' $\phi$ ' be the angle between [1 1 1] and [1 1 1], then by coordinate formula:

$cos\phi = \frac{1\times 1 + 1\times 1 + 1\times 1}{\sqrt{1^{2}+1^{2}+1^{2}\sqrt{1^{2}+1^{2}+1^{2}}}}$

$cos\phi$ = 1

Now, for the resolved components along [1 0 1]

$\t_{Rss}$ = $\sigma cos\theta cos\phi$

$\t_{Rss}$ = $0.45\times 10^{6}\times \sqrt{\frac{2}{3}}\times 1$ = 0.3673 MPa

b). For required tensile stress to produce $T_{cRss}= 0.242 MPa$ :

$\sigma _{1} = \frac{T_{cRss}}{cos\theta cos\phi }$

$\sigma _{1} = \frac{0.242\times 10^{6}}{\sqrt{\frac{2}{3}}\times 1}$

$\sigma _{1} = 0.2964 MPa$

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3 years ago

What medical technique uses sound wave pulses and their reflections to map structures and organs inside the body?

garri49 [273]

The correct answer is “C” ultrasound. Hope this helps!

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4 years ago

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A 500-n crate needs to be lifted 1 meter vertically in order to get it into the back of a pickup truck. what gives the crate a g

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The weight an weight of the truck

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4 years ago

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