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3 years ago

9

Which of the following is an example of a rotating body?

2 answers:

KIM [24]3 years ago

8 0

The spring, the rocket, and the box are not rotating. The wheel of a moving wagon is rotating.

topjm [15]3 years ago

5 0

The Answer Is A because Wheels Rotate and its telling you how springs go up and down because that isn't rotation

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What is transpiration

UkoKoshka [18]

Transpiration is the evaporation of water from plants. This occurs when water drawn from the roots is brought up the leaves (as it usually should), and, because of the outside heat, it vaporizes and exits via the pores found on the underside of the leaves.

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4 years ago

Yakvenalex [24]

Answer:

675 KM

Explanation:

hAVE A NICE DAY

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2 years ago

Read 2 more answers

A standing wave measures 12 m between its first and fourth node and its frequency 325 Hz. What is the standing wave's speed?

satela [25.4K]

Answer:

1300 m/s

Explanation:

Applying,

v = λf/2............... Equation 1

Where v = velocity or speed of wave, f = frequency of wave, λ = wavelength of wave.

From the question,

Given: f = 325 Hz, λ = (12×2/3) = 8 m

Substitute these values into equation 2

v = 325(8)/2

v = 1300 m/s.

Hence the standing wave speed is 1300 m/s

The right option is 1300 m/s

8 0

3 years ago

A student on the ground observes the sun just as it sets. His friend, who is located 100 meters higher up in a tall building, te

FrozenT [24]

Answer:

Rt≅6377Km

Explanation:

Take a look at the image. The horizontal line is the horizon, and the angle α corresponds to the earth rotation during the 77 seconds.

With this information, we can know the value of α:

α = $\alpha= \frac{77s}{1day}*\frac{1day}{24H}*\frac{1H}{60min}*\frac{1min}{60s}*2*\pi =0.0056rad$

Since we have formed a rectangle triangle:

$cos\alpha =\frac{Rt}{Rt+100m}$ Solving for Rt:

Rt≅6377467m=6377Km

4 0

3 years ago

An object initially traveling in a straight line with

SashulF [63]

Answer:

We conclude that the total distance traveled by the object in the 4 seconds is 36 m.

Explanation:

Given

Initial velocity u = 5.0 m/s

Acceleration a = 2.0 m/s²

Time t = 4 s

To determine

The total distance traveled by the object in the 4.0 seconds is

<u>Important Tip:</u>

We can determine the total distance traveled by the object in the 4.0 seconds by using the equation of motion such as

$s=ut+\frac{1}{2}at^2$

where

s = distance
u = initial velocity
a = acceleration
t = time

substituting u = 5.0, a = 2, and t = 4 in the formula

$s=ut+\frac{1}{2}at^2$

$s=\left(5\right)\left(4\right)+\frac{1}{2}\left(2\right)\left(4\right)^2$

$s=20+16$

$s=36$ m

Therefore, we conclude that the total distance traveled by the object in the 4 seconds is 36 m.

6 0

3 years ago