4 years ago

How do i figure this out?explanation not just a answer

Physics

2 answers:

zhenek [66]4 years ago

8 0

Answer:

You now this question state why a person standing at point Y hears an echo

tia_tia [17]4 years ago

7 0

Explanation:

Density is mass divided by volume. For example, Block A:

ρ = m / V

ρ = 60 g / 125 cm³

ρ = 0.48 g/cm³

I assume each block is a cube, so the length of block underwater divided by the side length of the block is the percent underwater.

% = 1.8 / 3.9

% = 46%

Repeat for Blocks B through E.

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A 250 kg motorcycle starts at rest at a stoplight. When the light turns green the motorcycle accelerates to 20 m/s in 4 seconds.

aliya0001 [1]

F=MA
F + 200= 250 x 4
F + 200 = 1000
F= 1000-200
F= 800

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3 years ago

An object originally at rest, is accelerated uniformly along a straight line to a speed of 8m/s in 2s. What is the acceleration

Anna11 [10]

Answer:

4m/s²

Explanation:

Initial velocity (u) = 0 m/s

Final velocity (v) = 8 m/s

Time taken (t) = 2 sec

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We know

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Hope it will help :)

3 0

3 years ago

Solar cells are often coated with a transparent, thin film of silicon monoxide (n = 1.45) to minimize reflective losses from the

Alinara [238K]

Answer:

94.82 nm

Explanation:

We have given that wavelength $\lambda=550\ nm$

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minimum thickness is given by $t=\frac{\lambda }{4n}$

here n is given n=1.45

so minimum thickness $t=\frac{550 }{4\times 1.45}=94.82\ nm$

so the minimum film thickness will be 94.82 nm

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4 years ago

The more diverse an ecosystem is —

V125BC [204]

Answer:

Explanation:

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3 years ago

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What are the importance of regulare<br>health examination.

Xelga [282]

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