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mihalych1998 [28]
3 years ago
14

In this closed system, a dog has sprinted to the top of a cliff. The dog (mass of 25kg) had been sprinting with a velocity of 13

m/s. Using what you know about potential and kinetic energy in systems, how tall is the cliff?
Given:

mass =
height =
velocity =
Formula for a closed KE/PE system:

Plug in the numbers:

Answer (with Units):
Physics
1 answer:
umka21 [38]3 years ago
6 0
According to this photo, or i can recommend this video that helped me by tapton physics.

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The Escape speed at the surface of a certain planet is twice that of the earth. what is its mass in unit of earth's mass?
VLD [36.1K]

Answer:

22Km/sec

Explanation:

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A testing instrument that's used to measure electrical signals in a circuit and display them as waveforms on a screen is called
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Read the paragraph below from the section "An Object At Rest Has Potential Energy
ch4aika [34]
I think it’s d because it talks about a spring with is common like the spring in a pen
8 0
4 years ago
6.
yaroslaw [1]

Answer:

12 J

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 7.6 kg

Distance (d) = 6 m

Velocity (v) = 5 m/s

Force (F) = 2 N

Workdone (Wd) =.?

Workdone can be defined as the product of force and distance moved in the direction of the force. Mathematically, it is expressed as:

Workdone = Force × distance

Wd = F × d

With the above formula, we can obtain the workdone as follow:

Distance (d) = 6 m

Force (F) = 2 N

Workdone (Wd) =.?

Wd = F × d

Wd = 2 × 6

Wd = 12 J

Thus, the workdone is 12 J

6 0
3 years ago
Does changing amplitude, wavelength or frequency play a role in how bluetooth acts?
Mandarinka [93]

Answer:

Yes

Explanation:

Yes, bluetooth devices work in a frequency range between 2.4 - 2.485GHz. Outside this frequency the devices will not communicate with each other correctly. This frequency equals a wavelength of around 1cm. Therefore, any change in the amplitude or wavelength would need to be in relation to each other in order to maintain the frequency in the required range for the bluetooth device to work accordingly. If one increases while the other remains the same it can easily change the frequency to outside the range.

3 0
3 years ago
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