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Ivenika [448]
3 years ago
13

Newton's second law problem. The spring constant can be determined from the balance of forces in equilibrium. Suppose the spring

extends a distance LaTeX: \Delta Δ x when additional mass LaTeX: \Delta Δ m is added. Write down Newton's second law for this case and solve for k.[Answer: K=delta m g/delta x.] Make sure you understand how this formula was derived. If delta m=41 g and delta x=6cm,what is k?
Physics
1 answer:
mario62 [17]3 years ago
6 0

Answer:

K =6.697 Kg/s²

Explanation:

Given:

delta m =41 g = 0.041 kg

delta x = 6cm = 0.06m

g = 9.8 m/s²

according to the given formula

K = delta m g /delta x

K = (0.041 kg × 9.8 m/s²) / 0.06m

K =6.697 Kg/s²

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Can someone please describe surface tension to me. Please don't give me the dictionary definition. Thank you
11111nata11111 [884]


Surface tension - My definition -

It's exactly what it says - The tension of a surface with a liquid (such as water), caused by the attraction of the surfaces layer ---- I hope this helps ---- I actually did research it and got some of this from a dictionary, but I changed some of it, too.... Sorry if this doesn't help :)

6 0
3 years ago
Two resistors, of R1 = 3.11 Ω and R2 = 6.15 Ω, are connected in series to a battery with an EMF of 24.0 V and negligible interna
Firlakuza [10]
Part (a):
1- Since the resistors are in series, therefore, the total resistance is the summation of the two resistors.
Therefore:
Rtotal = R1 + R2 = 3.11 + 6.15 = 9.26 ohm

2- Since the two resistors are in series, therefore, the current flowing in both is the same. We will use ohm's law to get the current as follows:
V = I*R
V is the voltage of the battery = 24 v
I is the current we want to get
R is the total resistance = 9.26 ohm
Therefore:
24 = 9.26*I
I = 24 / 9.26
I = 2.59 ampere

Part (b):
To get the voltage across the second resistor, we will again use Ohm's law as follows:
V = I*R
V is the voltage we want to get
I is the current in the second resistor = 2.59 ampere
R is the value of the second resistor = 6.15 ohm
Therefore:
V = I*R
V = 2.59 * 6.15
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Hope this helps :)
7 0
3 years ago
A submarine can detect an approaching enemy submarine using sonar. If a stationary submerged submarine emits a 100kHz tone and r
kotegsom [21]

Answer:

B) 1.5 m/s

Explanation:

The apparent frequency will be enhanced due to Doppler effect

If f be the apparent frequency , F be the real frequency  , V be the velocity of sound and v be the velocity of approaching submarine then f is given by

f = F \frac{V+v}{V-v}\\

\frac{f}{F} =\frac{V+v}{V-v}\\  

\frac{f}{F}-1  =\frac{V+v}{V-v}-1\\

\Delta f = \frac{2vf}{V-v}\\

200=\frac{2\times v\times 100\times 1000}{1482-v}\\  

v=1.48 m/s

7 0
3 years ago
Please help me with this question,giving the first correct answer brainliest
Bess [88]

Answer:

Your answer is A

Explanation:

7 0
2 years ago
Read 2 more answers
Match these names with the correct statements. 1. said sun revolved around earth Clyde Tombaugh 2. said earth revolved around su
Murljashka [212]

Answer:

1. Ptolemy.

2. Nicolaus Copernicus.

3. Tycho Brahe

4. Galileo Galilei

5. Isaac Newton

6. William Herschel

7. Johann Galle

8. Clyde Tombaugh

9. Albert Einstein.

10. Edwin Hubble

11. Karl Jansky.

12. Grote Weber.

Explanation:

1. Ptolemy: said sun revolved around earth.

2. Nicolaus Copernicus: aid earth revolved around sun.

3. Tycho Brahe: analyzed motions of planets.

4. Galileo Galilei: first used refracting telescope for astronomy.

5. Isaac Newton: invented reflecting telescope.

6. William Herschel: discovered the planet Uranus.

7. Johann Galle: discovered the planet Neptune.

8. Clyde Tombaugh: discovered the dwarf planet Pluto.

9. Albert Einstein: developed special and general theories of relativity.

10. Edwin Hubble: demonstrated that universe is expanding.

11. Karl Jansky: discovered radio waves from the center of the Milky Way.

12. Grote Weber: an amateur astronomer who built the first radio telescope.

8 0
3 years ago
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