Answer:
52.5 g of the salt
Explanation:
From the question given above, we were told that concentration of the mixture that is needed can be obtained as by dissolving 35 g of salt in 1000 mL of water.
Thus, we can obtain the mass of the salt needed to make 1500 mL of the salt water mixture as follow:
35 g of salt dissolves in 1000 mL of water.
Therefore, Xg of the salt will dissolve in 1500 mL of water i.e
Xg of salt = (35 × 1500)/1000
Xg of salt = 52.5 g
Thus, 52.5 g of the salt is needed to make 1500 mL of the salt water mixture.
Answer:
<em>The velocity of sound in the guitar string = 129.99 m/s</em>
Explanation:
Harmonics: A harmonic is a note with frequency equal to an integral multiple of that of the fundamental frequency.
<em>Note:</em> The harmonics of a string is the same as the harmonics of an open pipe.
f₆ = 3v/l ............................ Equation 1
making v the subject of the equation,
v = f₆l/3 ......................... Equation 2
Where f₆ = Is the sixth harmonics of the the string, v = velocity of sound in the guitar string, l = length of the guitar string.
<em>Given: </em>f₆ = 557.14 Hz, l = 70 cm = 0.7 m.
Substituting into equation 2
v = (557.14×0.7)/3
<em>v = 129.99 m/s</em>
<em>Thus the velocity of sound in the guitar string = 129.99 m/s</em>
The relative density of the battery decreases when the battery is turned from charging to discharging position.
The relative density of the charged battery is mostly 1.28 to 1.3 and the relative density of the discharged battery is 1.15.
Thus, option C is more appropriate for the given case.
Answer:
The value is
Explanation:
From the question we are told that
The refractive index of glass is
The wavelength is
The refractive index of oil is
Generally the condition for refractive index is mathematically represented as
Where t is the separation between two parallel plates of glass , now at minimum m which is the order of maxima produced is = 0
So
The length of copper wire this motorcyclist must use is equal to 8.56 meters.
<u>Given the following data:</u>
- Voltage of the motorcycle, V = 12 V
- Diameter of the copper wire, d = 0.25 mm
- Current in the wire, I = 4.0 A
Radius, r = diameter/2 = 0.12.5 mm = 0.000125 m.
Resistivity of the copper wire, ρ = 1.72 × 10⁻⁸ Ω-m.
<h3>How to determine the
resistance?</h3>
By applying Ohm's law, the resistance of this copper wire can be calculated by using this formula:
R = V/I
R = 12/4
Resistance, R = 3 Ohms.
Mathematically, the resistance of any conductor (wire) in terms of length is given by this formula:
Length = RA/ρ
Length = Rπr²/ρ
Length = [3 × 3.142 × (0.000125)²]/1.72 × 10⁻⁸
Length = 14.73 × 10⁻⁷/1.72 × 10⁻⁸
Length = 8.56 meters.
Read more on resistance and length here: brainly.com/question/13930397
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