Answer: As mass is constant during free-weight resistance training, a greater impulse will result in a greater velocity. Therefore, as generation of force greater than the weight of the resistance increases higher movement velocities and decreased movement times result. (from google)
Explanation: hope this helps! :)
Element. It is the simplest form of pure substance. They cannot be broken into anything else by physical or chemical means.
Answer:
ΔH = - 272.255 kJ
Explanation:
Given that
In first step ,reaction is given as
N2(g) + 3H2(g) →2NH3(g) ΔH=−92 kJ
In second step ,reaction is given as
4NH3(g) + 5O2(g) → 4NO(g) +6H2O(g) ΔH=−905 kJ
Now multiple by in the first equation ,we get
2N2(g) + 6H2(g) →4NH3(g) ΔH=− 184 kJ
Now by adding the above equation
2N2(g) + 6H2(g) →4NH3(g) ΔH=− 184 kJ
<u>4NH3(g) + 5O2(g) → 4NO(g) +6H2O(g) ΔH=−905 kJ</u>
2 N2+6 H2 + 5 O2 → 4 NO + 6 H2O ΔH= - 1089 k J
For one mole of nitric oxide (NO)
ΔH = - 272.255 kJ
Therefore change in the enthalpy will be - 272.255 kJ.
The number of protons is always equal to the atomic number of any element. strontium has 38 protons, which when taken away from 90 gives you 52 neutrons, which is three more neutrons than what Sr should have making 38 90Sr an isotope. Hope this helps.
Answer:
6.52×10⁴ GHz
Explanation:
From the question given above, the following data were obtained:
Wavelength (λ) = 4.6 μm
Velocity of light (v) = 2.998×10⁸ m/s
Frequency (f) =?
Next we shall convert 4.6 μm to metre (m). This can be obtained as follow:
1 μm = 1×10¯⁶ m
Therefore,
4.6 μm = 4.6 μm × 1×10¯⁶ m / 1 μm
4.6 μm = 4.6×10¯⁶ m
Next, we shall determine frequency of the light. This can be obtained as follow:
Wavelength (λ) = 4.6×10¯⁶ m
Velocity of light (v) = 2.998×10⁸ m/s
Frequency (f) =?
v = λf
2.998×10⁸ = 4.6×10¯⁶ × f
Divide both side by 4.6×10¯⁶
f = 2.998×10⁸ / 4.6×10¯⁶
f = 6.52×10¹³ Hz
Finally, we shall convert 6.52×10¹³ Hz to gigahertz. This can be obtained as follow:
1 Hz = 1×10¯⁹ GHz
Therefore,
6.52×10¹³ Hz = 6.52×10¹³ Hz × 1×10¯⁹ GHz / 1Hz
6.52×10¹³ Hz = 6.52×10⁴ GHz
Thus, the frequency of the light is 6.52×10⁴ GHz
