4 years ago

If your heart is beating at 76 beats per minute what is the frequency of your heart's oscillations

Physics

1 answer:

PSYCHO15rus [73]4 years ago

4 0

That would be a frequency of 1.2666... beats per second. This can be phrased as your heart beats at 1.27 Hz.

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What is the primary atomic characteristic that Mendeleev used to organize the periodic table?

Fudgin [204]

Atomic number is the answer

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3 years ago

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A student holds a bike wheel and starts it spinning with an initial angular speed of 9.0 rotations per second. The wheel is subj

KATRIN_1 [288]

Answer:

$\Delta t = 8 s$

Explanation:

As we know that the angular acceleration of the wheel due to friction is constant

so we can use kinematics

$\theta = \omega_i t + \frac{1}{2}\alpha t^2$

so we have

$(65 \times 2\pi) = (2\pi \times 9)(10) + \frac{1}{2}(\alpha)(10^2)$

$130\pi = 180\pi + 50 \alpha$

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now time required to completely stop the wheel is given as

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3 years ago

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fomenos

w=f×d

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3 years ago

Which picture correctly shows the path of the reflected light rays given an object outside the focal point?Select one:a. Ab. Bc.

nignag [31]

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1 year ago

A tennis ball is thrown from a 25 m tall building with a zero initial velocity. At the same moment, another ball is thrown from

Nataly [62]

Answer:

The two balls meet in 1.47 sec.

Explanation:

Given that,

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Using equation of motion

$s=ut+\dfrac{1}{2}gt^2+h$

Where, u = initial velocity

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For first ball

$s_{1}=0-\dfrac{1}{2}gt^2+25$ ....(I)

For second ball

$s_{2}=17t-\dfrac{1}{2}gt^2+0$ ....(II)

From equation (I) and (II)

$-\dfrac{1}{2}gt^2+25=17t-\dfrac{1}{2}gt^2+0$

$t=\dfrac{25}{17}$

$t=1.47\ sec$

Hence, The two balls meet in 1.47 sec.

6 0

4 years ago