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HACTEHA [7]
3 years ago
5

A 356.3 G rock is traveling at 14.2 m/s. How much kinetic energy in joules does it have?

Physics
1 answer:
geniusboy [140]3 years ago
3 0

Answer:

Ek=35.922J

Explanation:

Ek=0.5mv^2

Ek=0.5(0.3563kg)(14.2)^2

Ek=35.922J

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A tank whose bottom is a mirror is filled with water to a depth of 19.6 cm. A small fish floats motionless a distance of 6.40 cm
ANEK [815]

Answer:

A. 4.82 cm

B. 24.66 cm

Explanation:

The depth of water = 19.6 cm

Distance of fish  = 6.40 cm

Index of refraction of water = 1.33

(A). Now use the below formula to compute the apparent depth.

d_{app} = \frac{n_{air}}{n_{water}} \times d_{real} \\= \frac{1}{1.33} \times 6.40 \\= 4.82 cm.

(B). the depth of the fish in the mirror.

d_{real} = 19.6 cm + (19.6 cm – 6.40 cm) = 32.8 cm

Now find the depth of reflection of the fish in the bottom of the tank.

d_{app} = \frac{n_{air}}{n_{water}} \times d_{real} \\d_{app} = \frac{1}{1.33} \times 32.8  = 24.66\\

4 0
3 years ago
While driving north at 25 m/s during a rainstorm you notice that the rain makes an angle of 38° with the vertical. while driving
mamaluj [8]
<span>The car's reference frame should be your go to. Just have the car be stationary (modifying the velocity of the rain rather than the car's). From there you should be able to get the rain's velocity by a simple equation set.</span>
6 0
4 years ago
Read 2 more answers
Why is it important that we learn about our solar system, the sun, and planets in our solar system other than Earth?
tangare [24]

Answer:

To understand all the different kind of elements and how they work. Nature is a beautiful thing and it is important we understand how they survive and how we can help. The solar system is a mandatory nature. Learning about other planets also helps us feel safe and more knowledgable.

8 0
3 years ago
Which nucleus completes the following equation?<br> A. 299 Np<br> B. 20Pa<br> C. 2 Pa<br> D. - Np
blondinia [14]

Answer:

Option D. ²³⁹₉₃Np

Explanation:

Let the unknown be ʸₓA.

Thus, the equation becomes:

²³⁹₉₂U —> ⁰₋₁e + ʸₓA

Next, we shall determine the x, y and A. This can be obtained as follow:

92 = –1 + x

Collect like terms

92 + 1 = x

93 = x

x = 93

239 = 0 + y

239 = y

y = 239

ʸₓA => ²³⁹₉₃A => ²³⁹₉₃Np

Thus, the complete equation is:

²³⁹₉₂U —> ⁰₋₁e + ²³⁹₉₃Np

7 0
3 years ago
Red light has a longer wavelength than violet light. Which has the greater frequency?
Mandarinka [93]

ultraviolet lights have the greater frequency

7 0
3 years ago
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