Answer: B
Explanation:
Because the ramp is too high, the forces aren't enough to push onto the car stuck down.
It would be "Double replacement".
Hope this helps!
The wavelength of a wave of frequency 4 Hz and speed 2 m/s is 0.5 m.
Answer:
Explanation:
As we know that speed of a wave is directly proportional to the product of wavelength and frequency of the wave. If any two variables are known, then we can easily find the third parameter.
Like, in this case, the wavelength is not given, instead the frequency is given as 4 Hz and speed is given as 2 m/s, so the wavelength can be easily determined.
Speed = Wavelength × Frequency
Then Wavelength = speed/frequency
So, wavelength = 2/4=0.5 m
Thus, the wavelength of a wave of frequency 4 Hz and speed 2 m/s is 0.5 m.
Answer:
m = 500 grams
Explanation:
Assuming that the fulcrum is at the midpoint of a uniform meter stick, the moments about the fulcrum must be equal and opposite.
the 200 g mass makes a moment
200(g)[20] = 4000g gm•cm
the other mass must also create a moment of the same value
m(g)[8] = 4000g
m[8] = 4000
m = 500 grams