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3 years ago

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4 0

An organ is a group of two or more tissue. They function to maintain homeostasis in the body (keep the person alive) all body systems work together to perform functions (switching between throat and windpipe etc)

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A baseball is moving at a speed of 2.2\,\dfrac{\text{m}}{\text{s}}2.2 s m 2, point, 2, space, start fraction, m, divided by, s

Reika [66]

Answer:

a = 1,008 10⁻³ m / s²

Explanation:

For this exercise, let's use the kinematic relations of accelerated motion

v² = v₀² - 2 a x

The negative sign is because the acceleration is opposite to the speed, the final speed is zero

0 = v₀² - 2 a x

a = v₀² / 2x

Let's reduce the magnitudes to the SI system

x = 2.4mm (1m / 10³mm) = 2.4 10⁻³m

Let's calculate

a = 2.2²/2 2.4 10⁻³

a = 1,008 10⁻³ m / s²

5 0

2 years ago

A truck, initially at rest, rolls down a frictionless hill and attains a speed of 20 m/s at the bottom. To achieve a speed of 40

Crank

Answer:

To achieve the velocity of 40 m/sec height will become 4 times

Explanation:

We have given initially truck is at rest and attains a speed of 20 m/sec

Let the mass of the truck is m

At the top of the hill potential energy is mgh and kinetic energy is $\frac{1}{2}mv^2$

So total energy at the top of the hill $=mgh+0=mgh$

At the bottom of the hill kinetic energy is equal to $\frac{1}{2}mv^2$ and potential energy will be 0

So total energy at the bottom of the hill is equal to $0+\frac{1}{2}mv^2$

Form energy conservation $mgh=\frac{1}{2}mv^2$

$v=\sqrt{2gh}$ , for v = 20 m/sec

$20=\sqrt{2\times 9.8\times h}$

Squaring both side

$19.6h=400$

h = 20.408 m

Now if velocity is 0 m/sec

$40=\sqrt{2gh}$

$19.6h=1600$

h = 81.63 m

So we can see that to achieve the velocity of 40 m/sec height will become 4 times

5 0

2 years ago

An arrow is launched with an initial velocity of 7.6 m/s at an angle of 42 degrees above the horizontal. What is the horizontal

AleksAgata [21]

Explanation:

At any point on the arrow's trajectory, the horizontal component of the velocity is the same. Therefore, the horizontal component of the velocity at the top of its trajectory is

$v_x = v_{0x} = v_0\cos{42°} = (7.6\:\text{m/s})\cos{42°}$

$\:\:\:\:\:=5.6\:\text{m/s}$

5 0

2 years ago

Why is sustainable use important?

marusya05 [52]

To make sure that we have enough resourses to sustain ourselves. You see, if we use up, say, all water on earth, then obviously we won't have any more and we'll die.

4 0

3 years ago

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Clara made a chart to summarize some of the evidence that supports the big bang theory.

cluponka [151]

Answer:

The temperature of the CMB is cooler, not hotter, than at the time of the big bang.

Explanation:

Hope it help

Mark me as brainliest

6 0

2 years ago

Read 2 more answers