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Anna007 [38]
3 years ago
5

A. The cart will move to the left

Physics
1 answer:
zzz [600]3 years ago
4 0

Answer:

A. The cart will move to the left

Explanation:

Right has more force acting on the cart than the left

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Calculate the speed (in m/sec) of a wave with a wavelength of 2.1 meters and a period of 9.4 second.
Lorico [155]

Wave speed = (wavelength) x (frequency)

We know the wavelength, but we don't know the frequency. How can we find the frequency ?  "Here frequency frequency."

We know the period, and frequency is just (1 / period).  So . . .

Wave speed = (wavelength) / (period)

Wave speed = (2.1 meters) / (9.4 seconds)

Wave speed = (2.1 / 9.4) m/s

<em>Wave speed = 0.223 m/s</em>

8 0
3 years ago
Is 0.9 less that 1.0?
Tom [10]
0.9 is less than 1.0 by 0.1
so your answer is true

hope this helps
7 0
4 years ago
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A 2.40 kg ball is attached to an unknown spring and allowed to oscillate. The figure below shows a graph of the ball’s position
irga5000 [103]

(a) The period of the oscillation is 0.8 s.

(b) The frequency of the oscillation is 1.25 Hz.

(c) The angular frequency of the oscillation is 7.885 rad/s.

(d) The amplitude of the oscillation is 3 cm.

(e) The force constant of the spring is 148.1 N/m.

The given parameters:

  • <em>Mass of the ball, m = 2.4 kg</em>

<em />

From the given graph, we can determine the missing parameters.

The amplitude of the wave is the maximum displacement, A = 3 cm

The period of the oscillation is the time taken to make one complete cycle.

T = 0.8 s

The frequency of the oscillation is calculated as follows;

f = \frac{1}{T} \\\\f = \frac{1 }{0.8} \\\\f = 1.25 \ Hz

The angular frequency of the oscillation is calculated as follows;

\omega = 2\pi f\\\\\omega = 2\pi \times 1.25\\\\\omega = 7.855 \ rad/s

The force constant of the spring is calculated as follows;

\omega = \sqrt{\frac{k}{m} } \\\\\omega ^2 = \frac{k}{m} \\\\ k = \omega ^2 m\\\\k = (7.855)^2 \times 2.4\\\\k = 148.1 \ N/m

Learn more about general wave equation here: brainly.com/question/25699025

4 0
3 years ago
Which of the following is a reason that drivers prefer gasoline-powered engines to electric motors?
Nezavi [6.7K]
Your answer would be
D. Gasoline-powered cars are better for past acceleration and traveling at high speeds.

I just took this quiz and can confirm this is the correct answer!

Hope this helps :)
8 0
3 years ago
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Air escaping out from an air hose at a gas station always feels cool. Why? ​
kati45 [8]

Answer:

The air is contained at a high pressure in the tube. When it escapes from a small orifice, it suddenly expands. A large amount of its heat is absorbed in the process of expansion resulting in considerable fall in its temperature. This is why the escaping air feels cold.

8 0
2 years ago
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