3 years ago

A/An _____________ ( wind vane / anemometer ) can be used to measure wind speed.

Physics

1 answer:

Wewaii [24]3 years ago

3 0

Answer:

The answer is an anemometer

Explanation:

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1. A body whose mass is 2 kg and has a volume of 500cm just floats

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Answer:

Density equals mass over volume so 2 divided 500

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Bacteria vary somewhat in size, but a diameter of 2.9 μm is not unusual.

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Answer:

a) 6.4 x 10^-12 cm^3

b) 17 x 10^-6 mm^2

Explanation

a). The shape is assumed to be spherical The volume = volume of a sphere = \frac{4}{3} \pi r^3

πr

V = \frac{4}{3}*3.142* 1.15^3

∗3.142∗1.15

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2 years ago

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A disk of radius 10 cm is pulled along a frictionless surface with a force of 16 N by a string wrapped around the edge. At the i

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Answer:

t = 0.2845Nm (rounded to 4 decimal places)

Explanation:

The disk rotates at a distance of an arc length of 28cm

Arc length = radius × central angle × π/180

28cm = 10cm × central angle × π/180

Central angle = $\frac{28}{10}$ × 180/π ≈ 160.4°

Torque (t) = rFsin(central angle) , where F is the applied force

Radius in meters = 10/100 = 0.1m

t = 0.1m × 16N × sin160.4°

t = 0.2845Nm (rounded to 4 decimal places)

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A ball rolls over the edge of a platform with only a horizontal velocity. The height of the platform is 1.6 m and the horizontal

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Explanation:

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