Answer:i think that the answer is 2 because bullfrogs and racoons can hear sounds under 100hz
Explanation:
i REALLY HOPE you get this DUB
Answer:
1. The equivalent resistance for the combination of resistors in series is equal to the algebraic sum of all its individual resistances.
2. The Current will increase and causes it to have less restriction.
Explanation:
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D)
Explanation:
Coz the position changes with time but the position change is not constant throughout time So, D) does not have constant velocity
Answer:
The two brothers working together will take 7.7 hours to dig the entire ditch.
Explanation:
Assuming T to be the total amount of time taken by both brothers working together, we can say
- 1/T ditch/hour to be the rate at which both brothers dig the ditch together
- 1/14 ditch/hour to be the rate at which the older brother digs the ditch
- 1/17 ditch/hour to be the rate at which the younger brother digs the ditch
So the rate at which both brothers dig the ditch can be calculated by the equation,
1/T = 1/14 + 1/17
T = 238/31 = 7.7 (rounded off to the nearest tenth)
Answer:
The longest wavelength of radiation that passesses the necessary energy for breaking the Cl- Cl bond (in Cl2) is approximately 494.2 nm, which corresponds to the visible spectrum.
Explanation:
In order to answer this question we need to recall that the energy of a photon is given by:
E = hc/lambda, where
E = energy
h = Planck's constant
c = speed of light in vacuum
lambda = associated photon wavelength
In order to perform the calculations, first we need to change the units of 242kJ/mol to J. For doing this, we to divide by Avogadro's number and multiply by a 1000:
242kJ/mol = (242kJ/mol)*(1mol/6.022x10^23 particles)*(1000J/1kJ)= 4.0186x10^-19 J
Now, we simply solve for lambda and substitute the appropriate values in the energy equation:
lambda = hc/E = (6.626x10^-34 J s)*(3x10^8 m/s)/(4.0186x10^-19 J) = (1.986x10^-25 J m)/(4.0186x10^-19 J) = 4.942x10^-7 m = 494.2x10^-9 m = 494.2 nm
Therefore, the wavelength for a photon to break the Cl-Cl bond in a Cl2 molecule should be 494.2 nm at most, which corresponds to the visible spectrum (The visible spectrum includes wavelengths between 400 nm and 750 nm).
