Answer:If the object's speed increases.
Explanation:
If the object's speed increases, then its kinetic energy will increase. If the kinetic energy increases, the change in kinetic energy will be positive.
Answer:
Explanation:
It is to be noted here that the aluminium bar having some hole will not have any effect on the creation of strain in it due to stress .
length of bar L = 600 mm
= .6 m
cross sectional area = 3.14 x .02²
= .001256 m²
Compressive stress created = 180 x 10³ / .001256
= 143312.1 x 10³ N / m²
Modulus of elasticity = stress / strain
85 x 10⁹ = 143312.1 x 10³ / l / L
l / L = 143312.1 x 10³ / 85 X 10⁹
= 1686.02 x 10⁻⁶
l = L x 1686.02 x 10⁻⁶
= 600 x 10⁻³ x 1686.02 x 10⁻⁶
= .6 x 1686.02 x 10⁻⁶
= 1011.61 x 10⁻⁶
1.011 x 10⁻³ m
1.011 mm .
We know that
Velocity is given by the rate of change of position w.r.t time
- Now we can see in above v is not independent of t .So we replace the value of v by v=u+at and we get
- Integrate with limits 0 to t and x_o to x respectively .
The region where the lithosphere meets the mantle is called the asthenosphere. It is located above the mantle of the Earth and below the lithosphere. This part is known to have very high viscosity and mechanically weak. The rocks found in this area flows like a liquid.