Am example of a mechanical wave is?

The coal with the highest energy available per unit burned is:________

Elan Coil [88]

A Ignite. Because. When you put coal in a gas pit, it ignites and burns. However, there is a chance that all of us fed

7 0

2 years ago

Find Jupiter's mass from the fact that its moon Io orbits every 42.5 hours at an average distance of 422,000 kilometers.

Hitman42 [59]

Answer:

$M=1.9\times 10^{27}\ kg$

Explanation:

Given that,

Orbital period, T = 42.5 hours = 153000 seconds

The average distance of Jupiter's mass, r = 422,000 km

We need to find Jupiter's mass. The formula for the orbital period is given by :

$T^2=\dfrac{4\pi^2}{GM}r^3\\\\T^2GM=4\pi^2 r^3\\\\M=\dfrac{4\pi^2 r^3}{T^2 G}\\\\M=\dfrac{4\pi^2 \times (422000 \times 10^3)^3}{(153000 )^2 \times 6.67\times 10^{-11}}\\\\M=1.9\times 10^{27}\ kg$

So, the mass of Jupiter is $1.9\times 10^{27}\ kg$ .

7 0

3 years ago

When Jane drives to work, she always places her purse on the passenger’s seat. By the time she gets to work, her purse has falle

LUCKY_DIMON [66]

At some time during her drive she backed up with a substantial negative. ( backwards) acceleration. Since the pocket book is not physically connected to the seat it is free to move. Upon rapid negative acceleration the pocket book remains in its position while the car accelerates backwards away from it. this demonstrates Newtons 1st law of motion. The first law is the law of inertia. Which states, an object at rest. ( pocketbook) will remain at rest and an object in motion will continue in motion at constant velocity, unless acted upon by some outside force to change its motion.

4 0

3 years ago

Read 2 more answers

The total output power of an AM transmitter that is being operated at 50% modulation is measured to be 1800 watts. What is the c

Natalija [7]

Answer:

b. 1600 watts

Explanation:

Modulation is the process of impressing a low frequency signal unto a high frequency signal so a to transmit over long distance.

If the modulation index (m) for an AM wave is less than 1, modulation would occur with no distortion, if m = 1, modulation occurs but if m > 1, it leads to over modulation and loss in AM envelope.

The total output power of an AM is the sum of the carrier power, upper side band power and lower side band power.

Total output power of an AM $(P_{AM})=(\frac{2+m^2}{2} )P_c\\$