4 years ago

What was the first manmade satellite put into orbit

Physics

1 answer:

Nataly_w [17]4 years ago

5 0

The Soviet Union's Sputnik 1, it was launched October 4th 1957.

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When the E string of a guitar (frequency 330 Hz) is plucked, the sound intensity decreases by a factor of 2 after 4 s. Determine

zloy xaker [14]

Answer:

$Q=50.3$

Explanation:

From the question we are told that:

Frequency $F=330Hz$

Sound intensity drop $I_d=2$

Time $T=4s$

Therefore

Sound intensity Ratio

$\frac{I}{I_x}=\frac{1}{2}$

Generally the equation for Sound intensity is mathematically given by

$\frac{I}{I_x}=e^{-4\ \=t}$

$\frac{1}{2}=e^{-4\ \=t}$

$\=t =5.8s$

Generally the equation for Quality Factor is mathematically given by

$Q=2 \pi\frac{E}{\triangle E}$

$Q=2 \pi\frac{E}{\frac{E}{2*4}}$

$Q=50.3$

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3 years ago

Professor Whitney has a sample of lead and a sample of iron. The samples have equal mass. When Whitney heats the samples, the le

xenn [34]

The temperature increase of a substance is T=Q/m*c, where m is the mass, Q is the energy absorbed and c is the specific heat. So you can conclude that if the lead gets to a higher temperature, it must have a lower specific heat

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4 years ago

Which two staments explain how a cell's parts help it get nutrients

Goryan [66]

Answer:

I think it's A and D.

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A sentence using terminal velocity

pishuonlain [190]

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Which of these will NOT help reduce c02 levels in the atmosphere?

denpristay [2]

Answer:

the answer would be "using more heat" btw

Explanation:

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