Answer:
The final speed of the two carts is 1 m/s.
Explanation:
let m = 0.5 kg being the mass of the cart moving at an intial speed of v = 4 m/s and M = 1.5 kg is the mass of the cart at rest V = 0 m/s.
then by conservation of linear momentum, the final speed of the objects Vf is:
m×v + M×V = Vf×(M + m)
Vf = [m×v + M×V]/(M + m)
Vf = [(0.5 kg)×(4 m/s) + (1.5 kg)×(0 m/s)]/(1.5 + 0.5 kg)
= 1 m/s
Therefore, the final speed of the two carts is 1 m/s.
Answer:
The minimum angular spread of the laser beam is 3.32 × radians (or 3.32 μrad).
Explanation:
The minimum angular spread of a wave is the ratio of its narrowest diameter to its wavelength.
From Rayleigh's formula,
Angular spread = 1.22 (wavelength ÷ diameter)
= 1.22 (λ ÷ D)
Given that:
diameter, D = 0.18 m and wavelength, λ = 490 nm, then;
Angular spread of the laser beam = 1.22 (λ ÷ D)
= 1.22
= 1.22× 2.7222 ×
= 3.3211 × rad
The minimum angular spread of the laser beam is 3.32 × radians.
Answer:
A physical change is an ice cube melting into water. The property is melting point. Another is a banana changing from yellow to brown and the property is color. A chemical change example is a pot or a tool rusting and turning from silver to a reddish-brown. It is also a color change, but it is different because the color changed chemically and not just by looks.
Answer:
total amount of fluoride 3.6 *10^6 g
Explanation:
we know that
volume of reservoir
=
= 2.25*10^6 m^3
denso=ity of water = 1000 kg/m3
mass of water = 1000*2.25*10^6
= 2.25*10^9 kg = 2.25*10^12 g
fluoride 1.6 ppm
total amount of fluoride
= 3.6 *10^6 g
Answer:
Explanation:
The detailed and step by step analysis is as shown in the attached file.