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Elodia [21]
3 years ago
12

A speedboat travels from the dock to the first buoy, a distance of 20 meters, in 18 seconds. It began the trip at a speed of o m

/s. By the time it reached the buoy, it was going 10 m/s. What was the average velocity of the boat?
A) -3.33 m/s^2
B) -1.11 m/s
C) +1.11 m/s
D) +3.33 m/s
Physics
2 answers:
kifflom [539]3 years ago
8 0

its +1.11 I TOOK THE TEST

MArishka [77]3 years ago
5 0
If you or any else needs the answer for this it is C. +1.11 m/s.
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Why are the spheres representing nitrogen and oxygen different colors
erastovalidia [21]
Spheres representing nitrogen and oxyfgen are different colors so you can easily tell them apart.
6 0
2 years ago
If the wavelength of orange light is 6 · 10-7 m, calculate its frequency. f = _______ Hz
11Alexandr11 [23.1K]

<u>Answer:</u>

Frequency of orange light = 5 \times 10^{14} Hz

<u>Explanation:</u>

We are given the wavelength of the orange light and we are to find the value of its frequency.

Wavelength of orange light = 6.0 \times 10^{-7} m

We know that:

Speed of light = Frequency of orange light × Wavelength of orange light

Substituting the values in the above formula:

3 \times 10^8 = Frequency of orange light × 6.0\times10^{-7}

Frequency of orange light = \frac{3 \times 10^8}{6\times10^{-7}} =5 \times 10^{14} Hz

6 0
3 years ago
A jar of tea is placed in sunlight until it reaches an equilibrium temperature of 31.8 ◦C . In an attempt to cool the liquid, wh
Shtirlitz [24]

Answer:

Explanation:

mass of liquid m₁ = 161 g

temperature t₁ = 31.8

final temperature t₂ = 28.8

Let m g of ice melted to cool the liquid

heat gained = mass x latent heat of fusion + mass x loss of temp x s heat of water

= m x 80 + m x 1 x ( 31.8 - 28.8 ) ( latent heat of ice = 80 cals/g )

= 83 m

heat lost  = 161 x 1 x ( 31.8 - 28.8 ) ( specific heat of water = 1 cal / g / k )

= 161 x 3

heat lost = heat gained

83 m = 161 x 3

m = 5.82 g

mass of remaining ice = 131 - 5.82

= 125.18 g

4 0
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Calculate
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What is in the crysphere
butalik [34]

I think you mean the Cryosphere?

But the answer is D- Earths Ice

This word Cryosphere comes from the greek word "kryos" which means cold

Many people think of the cryosphere as being the north and south poles  but snow and ice can be found in a lot of places on the Earth

3 0
3 years ago
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