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Alekssandra [29.7K]
2 years ago
9

A kayaker needs to paddle north across a

Physics
2 answers:
Dmitriy789 [7]2 years ago
8 0
100 is going to be your answer.
vova2212 [387]2 years ago
4 0

Answer:

100

Explanation:

3-2=1

100/1=100

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When the mass of a body is constant, then its acceleration is directly proportional to the force acting on it. When the force ac
Fed [463]

Answer:

True

Explanation:

8 0
3 years ago
Read 2 more answers
Please help with this question!!!!
Maslowich
The answer is B hope this helps
4 0
3 years ago
Infrared radiation has frequencies from 3.0×1011 to 3.0×1014 Hz, whereas the frequency region for microwave radiation is 3.0×108
igor_vitrenko [27]

Answer:

1. The speed of infrared radiation is the same as microwave radiation.

2. The wavelength of infrared radiation is lower than microwave radiation.

Explanation:

1. The speed of infrared radiation is the same as microwave radiation. This is because both infrared radiation and microwave radiation are electromagnetic waves and all electromagnetic waves move at the same speed, the speed of light.

2. Frequency and wavelength has an inverse relationship. This means that the higher the frequency, the lower the wavelength.

Since the frequency range of infrared waves is higher than that of microwaves, the wavelength range of infrared waves is lower than that of microwaves.

We can prove this by using the maximum frequency value of each wave to calculate their corresponding wavelengths.

Speed of light, c, is given as:

c = λf

Where λ is wavelength and f is frequency.

Wavelength is therefore:

λ = c/f

For infrared wave, the maximum frequency is 3 * 10^14 Hz, hence the corresponding wavelength is:

λ = (3 * 10^8) / (3 * 10^14)

λ = 10^(-6) m

For microwave, the maximum frequency is 3 * 10^11 Hz, hence the corresponding wavelength is:

λ = (3 * 10^8) / (3 * 10^11)

λ = 10^(-3) m

Hence, the wavelength of infrared waves is lower than the wavelength of microwaves.

8 0
3 years ago
A metal sphere, X, has an initial net charge of −6 × 10−6 coulomb and an identical sphere, Y, has an initial net charge of +2 ×
STatiana [176]
When the two spheres touch each other, part of the charge recombine together. The part of charge that recombines is the excess of positive charge on sphere Y, Q_y = +2 \cdot 10^{-6}C, that recombines with an equivalent charge of -2 \cdot 10^{-6}C located on sphere X. As a result, the total charge remained on the two spheres is the excess of negative charge remained on sphere X:
Q=-4 \cdot 10^{-6}C
Since the two spheres are identical, they have same capacity, so this charge will now redistribute equally on the two spheres: therefore, at the end, each sphere will have
\frac{Q}{2}=-2 \cdot 10^{-6} C

8 0
3 years ago
How long will it take a ball to hit the ground if it's dropped from a height of 2.0 m?
love history [14]

Answer:

0.63 s

Explanation:

We have,

  • Height, h = 2.0 m
  • Initial velocity, u = 0 m/s
  • Acceleration due to gravity, g = 10 m/s²

We have to find the time taken.

⠀⠀⠀⠀⇒ h = ut + ½gt²

⠀⠀⠀⠀⇒ h = ½gt²

⠀⠀⠀⠀⇒ 2 = ½ × 10 × t²

⠀⠀⠀⠀⇒ 2 = 5 × t²

⠀⠀⠀⠀⇒ 2/5 = t²

⠀⠀⠀⠀⇒ √(2/5) = t

⠀⠀⠀⠀⇒ <u>0.63 s = t</u>

Therefore, time taken is 0.63 seconds.

8 0
2 years ago
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