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2 years ago

I NEED HELP PLEASE THANKS! :)

Physics

1 answer:

Nady [450]2 years ago

7 0

Answer:

0.962 s

Explanation:

Speed = frequency × wavelength

v = fλ

2.60 m/s = f (2.50 m)

f = 1.04 Hz

Period = 1 / frequency

T = 1/f

T = 1 / (1.04 Hz)

T = 0.962 s

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What is the weight of an object with a mass of 6.0 kg on Earth?

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6 x 9.807
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A student completed a lab report. Which correctly describes the difference between the "Question" and "Hypothesis" sections

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A thin rod of length 0.83 m and mass 110 g is suspended freely from one end. It is pulled to one side and then allowed to swing

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Explanation:

(a) The given data is as follows.

Length of the rod, L = 0.83 m

Mass of the rod, m = 110 g = 0.11 (as 1 kg = 1000 g)

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= $\frac{1}{12} \times 0.11 \times (0.83)^{2} + 0.11 \times \frac{0.83}{2}$

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Therefore, kinetic energy of the rod at its lowest point will be calculated as follows.

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$K_{i} + U_{i} = K_{f} + U_{f}$

$K_{i} = U_{f} - U_{i}$

or, mgh = K = 6.86 J

Therefore, h = $\frac{6.86}{mg}$

= $\frac{0.63}{0.11 \times 9.8}$

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Which is true about a convex mirror?

kakasveta [241]

Answer:

The answer is

A. Incident rays that are parallel to the central axis are dispersed but will be perceived as originating from a point on the near side of the mirror.

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