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3 years ago

5

A student is conducting an experiment to determine how far a ballwill roll down a ramp based on the angle of incline what are th

e three possible controls for the experiment

1 answer:

Basile [38]3 years ago

8 0

Answer:ball, ramp, and angle

Explanation: these are the three things that are controls because you can control them

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You decide to impress Grandpa by showing him how fast sound travels. You have a piece of plastic pipe with an adjustable closed

fredd [130]

Answer:

336.96m/s

Explanation:

answer is in photo above

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3 years ago

1. A Zambeef delivery track travels 18 km north, 10 km east, and 16 km south. What is its final displacement from the origin?

Amiraneli [1.4K]

Answer:

10.2 km

Explanation:

Displacement is the shortest distance from your original position after movement.

Now, the Zambeef delivery truck moves 18 km north and then 10 km east and then 16 km south.

This means that vertically the truck is 2km short of the 18 km he travelled north..

So we can find the displacement using pythagoras theorem..

Let d be the distance from the current position to the initial position.

Thus;

d² = 2² + 10²

d² = 4 + 100

d = √104

d ≈ 10.2 km

I have attached a diagram showing the direction of this displacement

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3 years ago

Everyone's favorite flying sport disk can be approximated as the combination of a thin outer hoop and a uniform disk, both of di

Umnica [9.8K]

Answer:

The length of the boomerang is 0.364 m

Explanation:

The moment of inertia is:

$I=\frac{1}{2} m_{d} r^{2} +m_{h} r^{2}$

Where

md = 0.05 kg

mh = 0.12 kg

r = d/2 = 0.273/2 = 0.1365 m

$I=\frac{0.05*(0.1365)^{2} }{2} +(0.12)*(0.1365)^{2} =2.7x10^{-3} kgm^{2}$

The length of the boomerang is:

$L_{b} =\sqrt{\frac{12I}{m} } =\sqrt{\frac{12*2.7x10^{-3} }{0.245} } =0.364m$

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3 years ago

Based on its location on the periodic table, which metal is likely to be less reactive than rubidium and more reactive than calc

Korvikt [17]

Answer:

A i think tell me if i got it right

Explanation:

Based on the location on the periodic table, Potassium (K) is the metal that will be less reactive than rubidium and more reactive than calcium.

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3 years ago

Which element is not part of the rhetorical triangle designed by Aristotle? speaker credibility audience emotion content logic l

ser-zykov [4K]

The correct answer is this one: "length of address." The element that is not part of Aristotle's rhetorical triangle is the length of the address. The rhetorical triangle of Aristotle are the logos, pathos, and ethos. Logos is the logic, Pathos is the audience emotion, Ethos is the speaker's credibility.

3 0

3 years ago

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