What is the sun's spectrum

1 answer:

7 0

The sun spectrum is The Sun emits light primarily in the visible spectrum, but it also emits at other wavelengths, as illustrated in the following figure.

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Two cars, one in front of the other, are traveling down the highway at 25 m/s. the car behind sounds its horn, which has a frequ

netineya [11]

You are given two cars, one in front of the other, that are traveling down the highway at 25 m/s. You are also given a frequency of 500 Hz of the car travelling behind it. You are asked what is the frequency heard by the driver of the lead car. This problem can be solved using the Doppler effect

sound frequency heard by the lead car = [(speed of sound + lead car velocity)/( speed of sound + behind car velocity)] * (sound of frequency of the behind car)
sound frequency heard by the lead car = [(340 m/s + 25 m/s)/(340 m/s - 25 m/s)] * (500 Hz)
sound frequency heard by the lead car = 579 Hz

7 0

3 years ago

A box has 1000N of force. It has an acceleration of 10 m/s/s. What is the mass of the box?

OverLord2011 [107]

Answer:

he tension in an elevator cable is 10,000 N. The elevator itself has a mass of 500 kg.

Explanation:

8 0

3 years ago

Read 2 more answers

Suppose a truck has a momentum of 40,120 kg • and a mass of 1,180 kg. What is the truck’s velocity?

gladu [14]

Answer:

The velocity of the truck is 34 m/s.

Explanation:

The momentum (p) of an object is the product of its mass (m) and its velocity (v) which can be written as:

p = mv

Here in this problem, we are given a truck which has a momentum of 40120 kg and a mass of 1180 kg and we are to find its velocity.

So substituting the given values in the above formula to find the velocity of the truck.

Truck's velocity = $\frac{40120}{1180}$ = 34 m/s.

3 0

3 years ago

The board sandwiched between two other boards shown below weighs 87.5 n. if the coefficient of friction between the boards is 0.

IRINA_888 [86]

Refer to the diagram shown below.

W = 87.5 N, the weight of the sandwiched board.
μ = 0.622, the static coefficient of friction.

From the free body diagram of the sandwiched board, obtain
2μF = W
F = W/(2μ) = 87.5/(2*0.622) = 70.34 N

Answer: 70.34 N

8 0

3 years ago

Read 2 more answers

I don't understand how to get 50000 ohms, please can someone help? I would have just left my answer at 25,000 ohms!

pochemuha

I think this is shown in the fine print on the second sheet . . .

The question starts out by saying that the scale uses two 3V cells in series.
That makes the total battery voltage 6 volts.

0.12 milliamperes = 0.00012 Amperes.

Resistance = (voltage) / (current in Amperes).

Resistance = 6 / 0.00012 = 50,000 Ω

8 0

4 years ago