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3 years ago

All planetary orbits are: Spherical? Circular? Egg-shaped? Elliptical?

Physics

1 answer:

nikdorinn [45]3 years ago

5 0

Answer:

The planets are in an elliptical orbit.

Explanation:

Despite the planets looking as if they are in a circular orbit, the orbits have a slight curvature to them and in turn are elliptical.

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An object is moving along a straight line at a

Dominik [7]

The answer for this question is 5 m

6 0

2 years ago

3. A fan at a rock concert is 30 m from the stage, and at this point the sound intensity is 110 dB. a. How much energy is transf

lidiya [134]

Answer:

(a). The energy is transferred to her eardrums each second is 2827.4 J

(b). The sound intensity is 1.00 W/m²

Explanation:

Given that,

Distance = 30 m

Intensity = 110 dB

(b). We need to calculate the intensity

Using formula of intensity

$\beta=10\log\dfrac{I}{I_{0}}$

Put the value into the formula

$110=10\log\dfrac{I}{1.0\times10^{-12}}$

$\dfrac{110}{10}=\log\dfrac{I}{1.0\times10^{-12}}$

$11=\log\dfrac{I}{1.0\times10^{-12}}$

$I=e^{11\times1.0\times10^{-12}}$

$I=1.00\ W/m^2$

We need to calculate the power

Using formula of power

$P=I\times A$

Put the value into the formula

$P=1.0\times\pi\times(30)^2$

$P=2827.4\ W$

(a). We need to calculate the energy is transferred to her eardrums each second

Using formula of energy

$E=P\times t$

$E=2827.4\times1$

$E=2827.4\ J$

Hence, (a). The energy is transferred to her eardrums each second is 2827.4 J

(b). The sound intensity is 1.00 W/m²

6 0

3 years ago

What is radio activity

den301095 [7]

Explanation:

Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive.

7 0

3 years ago

Read 2 more answers

Does anyone knows how to do this ?

Zigmanuir [339]

Answer:

yea it seems pretty simple.... just follow the instruction

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2 years ago

Find an equation of the line which is parallel to 2x-3y=6 and passes through the point (6,9)

tatuchka [14]

Step 2: Use the slope to find the y-intercept. Line is parallel so use m = 2/5. 6. Findthe equation of a line passing through the point (8, –9) perpendicular to the line 3x + 8y = 4.

8 0

4 years ago