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3 years ago

When is the best time to take a resting heart break

Physics

1 answer:

Olegator [25]3 years ago

5 0

Answer:

I believe D

Explanation:

You need to have a more accurate reading and you want to test it multiple times throughout the week though to get a base resting rate.

I hope this is correct good luck!

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What is the longest wavelength in the molecule’s absorption spectrum??

Alisiya [41]

The longest wavelength in the Molecule's absorption spectrum is 2250nm

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2 years ago

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Plzpzlpzlzplzplzplzpz this one also<br> all questions

WINSTONCH [101]

Answer:

I didn't know these questions sorry

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3 years ago

Baseball player a bunts the ball by hitting it in such a way that it acquires an initial velocity of 2.4 m/s parallel to the gro

LUCKY_DIMON [66]

Let $\mathbf r_A$ denote the position vector of the ball hit by player A. Then this vector has components

$\begin{cases}r_{Ax}=\left(2.4\,\frac{\mathrm m}{\mathrm s}\right)t\\r_{Ay}=1.2\,\mathrm m-\frac12gt^2\end{cases}$

where $g=9.8\,\dfrac{\mathrm m}{\mathrm s^2}$ is the magnitude of the acceleration due to gravity. Use the vertical component $r_{Ay}$ to find the time at which ball A reaches the ground:

$1.2\,\mathrm m-\dfrac12\left(9.8\,\dfrac{\mathrm m}{\mathrm s^2}\right)t^2=0\implies t=0.49\,\mathrm s$

The horizontal position of the ball after 0.49 seconds is

$\left(2.4\,\dfrac{\mathrm m}{\mathrm s}\right)(0.49\,\mathrm s)=12\,\mathrm m$

So player B wants to apply a velocity such that the ball travels a distance of about 12 meters from where it is hit. The position vector $\mathbf r_B$ of the ball hit by player B has

$\begin{cases}r_{Bx}=v_0t\\r_{By}=1.6\,\mathrm m-\frac12gt^2\end{cases}$

Again, we solve for the time it takes the ball to reach the ground:

$1.6\,\mathrm m-\dfrac12\left(9.8\,\dfrac{\mathrm m}{\mathrm s^2}\right)t^2=0\implies t=0.57\,\mathrm s$

After this time, we expect a horizontal displacement of 12 meters, so that $v_0$ satisfies

$v_0(0.57\,\mathrm s)=12\,\mathrm m$

$\implies v_0=21\,\dfrac{\mathrm m}{\mathrm s}$

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3 years ago

Emma is running for the bus. She runs 100 metres in 25 seconds. Calculate her speed

Afina-wow [57]

Answer:

25km/h

is that the full question

8 0

3 years ago

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How can biomass energy use improve water quality? a. the combustion of biomass material to produce energy improves water quality

Basile [38]

The biomass energy can use improve water quality in soil erosion and sedimentation are decreased during biomass crop growth. The correct option is C.

<h3>What is biomass energy?</h3>

Biomass energy is obtained by the processing of the dead plants and animal or vegetable, cow dung or wood.

The biomass energy obtained by these bio things, it is enriched with the nutrients required by the new crop plants to grow effectively.

The biomass energy provides good water quality by soil erosion and sedimentation.

Thus, The correct option is C.

Learn more about biomass energy.

brainly.com/question/2292559

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7 0

2 years ago