3 years ago

Which change will increase the speed of a sound wave traveling in a solid aluminum rod?

Physics

1 answer:

Olegator [25]3 years ago

7 0

Yessss sirrr it willllll

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How much work must be done to stop a 1100-kg car traveling at 112 km/h?(Hint: You will need to convert the speed first.)Answer:

zimovet [89]

According to the Work-Energy Theorem, the work done on an object is equal to the change in the kinetic energy of the object:

$W=\Delta K$

Since the car ends with a kinetic energy of 0J (because it stops), then the work needed to stop the car is equal to the initial kinetic energy of the car:

$K=\frac{1}{2}mv^2$

Replace m=1100kg and v=112km/h. Write the speed in m/s. Remember that 1m/s = 3.6km/h:

$\begin{gathered} K=\frac{1}{2}(1100kg)\left(112\frac{km}{h}\times\frac{1\frac{m}{s}}{3.6\frac{km}{h}}\right)^2=532,345.679...J \\ \\ \therefore K\approx532,346J \end{gathered}$

Therefore, the answer is: 532,346 J.

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1 year ago

What is the total potential difference provided by the four cells in the circuit each of 1.5volts?

aivan3 [116]

Answer:

Answers 2.( a) . (i)Total potential difference provided by the four cell = 4x 1.5 Volts = 6.0 Volts (ii)The component of X is a variable resistor .

Explanation:

hope it helps

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2 years ago

Wat's the definition of microwave spectroscopy

ivann1987 [24]

Answer:

Microwave spectroscopy is the spectroscopy method that employs microwaves, i.e. electromagnetic radiation at GHz frequencies, for the study of matter

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3 years ago

A. Driver A falls the greatest distance.

9966 [12]

A. I just took a quiz on it and A was my answer

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2 years ago

ifif it takes 1-minute for 45 c of charge to pass a point in an electric circuit what is the current through the circuit?

Rudiy27

Answer:

45C in a minute is

45/60 C in a second

.75 C in a second is 3/4 of an ampere.

Explanation:

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2 years ago