2 years ago

A few alpha particles bounce off a thin sheet of gold foil. What did scientists

Physics

1 answer:

Vilka [71]2 years ago

7 0

Answer:

I world say A is the answer 80% sure

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A wave is produced in a rope. The wave has a speed of 33 m/s and a frequency of 22 Hz. What wavelength is produced? 0. 67 m 0. 7

vekshin1

Answer:

Wavelength = <u>1.5 m</u>

Explanation:

The formula for waves in terms of wavelength, speed and frequency is:

Speed (v) = Frequency (f) × Wavelength (λ)

33 = 22 × λ

33 = 22λ

λ = $\frac{33}{22}$

So, λ = 1.5 m

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2 years ago

A river flows at a velocity of 3 km/h relative to the riverbank. A boat moves downstream at a velocity of 15 km/h relative to th

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15+3=18km/hour
Think about it like this. The boat is going 15 faster than the river, and the river is going 3 faster than the bank, so the boat is going 18 faster than the river bank

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3 years ago

1. Calculate the height of tree, 250 m away that produces

gtnhenbr [62]

Answer:

Explanation:

1.5/30 = x/250

x = 12.5 m

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3 years ago

Which statement about a right triangle is NOT true?

Alex787 [66]

Answer:

The square of the hypotenuse is equal to the sum of the squares of the other two lengths.

Explanation:

only one that made sense

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3 years ago

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When an oxygen atom forms an ion, it gains two electrons. What is the electrical charge of the oxygen ion?

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-2. This is because it is gaining electrons. Electrons are negative. Therefore it is a negative charge.

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3 years ago