The momentum after collision is given by (m1+m2)v where m1 is the mass of car A, m2 us the mass of car B while v is the common velocity after collision.
Therefore, momentum=(2000+4000)5=30000kgm/s to the right.
Explanation:
The matter passes in the directions of the noise and flows from the source to a receiver like sound flows through a substance. As the sound flows through a fluid, the material is disrupted for an amount of time, but after the sound leaves, it restored to its normal location.
Answer:
In absorption, the frequency of the incoming light wave is at or near the energy levels of the electrons in the matter. The electrons will absorb the energy of the light wave and change their energy state.
Explanation:
Answer:
strain = 0.0011575
Explanation:
Given:
- The diameter of specimen d = 0.02 m
- Applied uni-axial force P = 40,000 N
- Modulus of Elasticity E = 110 GPa
Find:
If the deformation is totally elastic, what is the strain experienced by the specimen?
Solution:
- First we need to calculate the stress in the specimen using the relation:
stress = Force / Area
stress = 40,000*4 / pi*d^2
stress = 160,000 / pi*0.02^2
stress = 127.323 MPa
- Now compute Elastic strain from the definition of Elastic modulus of a material:
E = stress / strain
strain = stress / E
- Plug in the values:
strain = 127.323 / 110*10^3
strain = 0.0011575
