This is called a reference point
Answer
given,
mass of baseball(m) = 144 g = 0.144 Kg
initial velocity(u) = 29 m/s
mass of brick(M) = 5.25 Kg
speed of the brick (v') = 1.32
speed of base ball after collision = ?
using conservation of momentum
m u = m v + Mv'
0.144 x 29 = 0.144 v + 5.25 x 1.32
0.144 v = -2.754
v = -19.125 m/s
b) KE before collision
KE_i = 60.55 J
KE after collision
KE_f = 30.91 J
Answer:
6.25×10^-11
Explanation:
The equilibrium charge = 2.4 - (2.3/2)
Equilibrium charge= 2.4 - 1.15= 1.25uc
Total charge= final charge - initial charge
Total charge= 1.25uc - 2.40uc= -1.15uc
Total charge transferred = -1.15 + 1.25 = 0.1uc
Number of electrons equivalent to 0.1uc= (0.1×10^-6)/-(1.6×10^-19)
Number of electrons = 6.25×10^-11 electrons
Given what we know, we can confirm that if the wavelength of light were increased, its frequency and therefore energy would decrease.
<h3>Why do frequency and energy decrease?</h3>
The frequency of light waves is measured through the wavelengths. Shorter waves result in higher frequencies, and since these waves are increasing in length, the frequency will decrease. Since the frequency decreases, the waves lose kinetic energy, and thus the energy decreases.
Therefore, we can confirm that if the wavelength of light were increased, its frequency and therefore energy would decrease.
To learn more about wavelengths visit:
brainly.com/question/7143261?referrer=searchResults
Answer:
<h3>Law of reflection</h3>
Explanation:
According to the laws of reflection,
- Incident ray, reflected ray and normal lie on the same plane.
- Angle of reflection and angle of incidence are always equal.
→ Angle of reflection : Angle of which light rays reflect off surface.
→ Angle of incidence : Angle at which light rays strikes the surface.