3 years ago

WHY is it so important to include units when expressing numbers?

Physics

1 answer:

Natasha_Volkova [10]3 years ago

5 0

Answer:

Without units, the results are unclear and it is hard to keep track of what each seperate measurement entails.

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3 years ago

Will mark brainliest! Please help!

djverab [1.8K]

Answer:

30 seconds

Explanation:

A = A02^-(t/hl)

--> ln(A/A0) = -(t/hl)ln2

solving for hl,

hl = -t x ln2 /ln(A/A0)

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3 years ago

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:

$\Delta t = 8 s$

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

so we can use kinematics

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so we have

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

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$\alpha = -\pi rad/s^2$

now time required to completely stop the wheel is given as

$\omega_f = \omega_i + \alpha t$

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now time required to stop the wheel is given as

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3 years ago

Which landscape will erode more quickly? Assume the same precipitation and average temperature in each landscape.

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Answer:

B. Landscape B

Explanation:

Shale is fine sediment pressed together to form rock.

Sandstone is larger (sand-grain-sized) sediment cemented together to form rock.

Shale erodes faster, as evidenced by the second attachment. That attachment shows erosion of a rock face consisting of interbedded shale and sandstone. The shale has receded significantly, leaving the sandstone layers with space between them.

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3 years ago

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landrace

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3 years ago

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