Explanation:
velocity = wavelength × frequency
3×10⁸ = 400/10⁹ × frequency
frequency = 3 × 10¹⁵ /400
frequency = 75×10¹¹Hz
Answer:
resultant force = 59 N
Explanation:
we know the formula: <em>Force = mass * acceleration</em>
Force = 25 kg * 2.36 m/s²
Force = 59 N
Hello! B. would be an example of a chemical change.
Answer:
f = 2 f₀
Explanation:
A mass-spring system has angular velocity
w = √ k / m
The angular velocity is related to the frequency
w = 2π f
f = 1 /2π √k / m
If we change the mass for another that is ¼ of the initial mass
m = ¼ mo
We replace
f = 1 / 2π √(k 4 / mo)
f = (1 / 2π √k/m₀) √ 4
f = 2 f₀
In summary the frequency doubles from the initial frequency
There is many activities you can do like running, sit-ups, push-ups, and squats.