Answer:
1 m/
Explanation:
The Net Force refers to the sum of all forces acting on an object. Hence,
Net Force of box
= 20 + (-9.0) [It is -9.0 as both forces are in different directions]
= 11.0 N
We also need to know that the net force on an object is equal to the product of the mass of the object and the acceleration of the object. Hence,
11.0 = 12.0
= 1 m/
(nearest whole number)
Answer:
The speed of this light and wavelength in a liquid are and 442 nm.
Explanation:
Given that,
Wavelength = 650 nm
Index refraction = 1.47
(a). We need to calculate the speed
Using formula of speed
Where, n = refraction index
c = speed of light in vacuum
v = speed of light in medium
Put the value into the formula
(b). We need to calculate the wavelength
Using formula of wavelength
Where, = wavelength in vacuum
= wavelength in medium
Put the value into the formula
Hence, The speed of this light and wavelength in a liquid are and 442 nm.
