3 years ago

I need help, lol. ASAP

Physics

2 answers:

Sedaia [141]3 years ago

4 0

Answer: Light slows down.

Explanation:

shtirl [24]3 years ago

4 0

Light slows down when it enters the water!

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You measure the pressure at 10 feet in a column of water and determine it to be 43.36 lbs/in. What would this measurement be in

Lina20 [59]

Answer:

299034 N/m²

Explanation:

1 lbs = 4.448 N

1 in = 0.0254 m

1 in² = 0.254² m²

thus,

$1\frac{lbs}{in^2} = \frac{4.448N}{0.0254^2m^2}=6894.413N/m^2$

therefore,

43.36lbs/in² in N/m² will be

= 43.36 × 6894.413

= 298941.77 N/m² ≈ 299034 N/m²

so the correct option is 299034 N/m²

3 0

4 years ago

How many square meters are in a rectangular piece of carpet which measures 12.0 feet by 22.0 feet? 1 m = 39.37 in., 1 ft = 12 in

gavmur [86]

Answer:

Area of the rectangle will be $24.520m^2$

Explanation:

We have given sides of rectangle is 12 feet by 22 feet

We know that 1 feet = 0.3048 m

So 12 feet will be equal to 12×0.3048 = 3.657 m

And 22 feet will be equal to 22×0.3048 = 6.705 m

We have to find the area of the rectangle in square meter

Area of rectangle is equal to multiplication of sides of the rectangle

So area A $=3.657\times 6.705=24.520m^2$

6 0

3 years ago

A boy standing at one end of a floating raft that is stationary relative to the shore walks to the opposite end of the raft, awa

lapo4ka [179]

Answer:

The raft moves towards the shore

Explanation:

6 0

3 years ago

A light spring has a force constant of 70 N/m and is used to pull a 10 kg box on a horizontal frictionless surface. If the box h

Sergio039 [100]

Answer:

82.4 cm

Explanation:

∑F = ma

kx cos θ = ma

x = ma / (k cos θ)

x = (10 kg) (5 m/s²) / (70 N/m cos 30.0°)

x = 0.824 m

x = 82.4 cm

8 0

3 years ago

An element X has two isotopes. X-15 has 7 protons and 8 neutrons.determine the atomic number and mass Number of the second isoto

Black_prince [1.1K]

Atomic Number is 7, because isotopes contain the same number of protons. The mass number is 17, because protons + neutrons = mass number.

4 0

3 years ago

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