Do you mean 12 km/h because this is a measurement of distance
Answer:
Energy converted to heat and sound. Deformation of soil or ground may also take up some energy.
Explanation:
When the rock hits the ground, a part of the energy is converted to heat (thermal energy) and sound. If the ground is soft, it will be compressed by the rock when it lands. This deformation of the ground will take up some of the energy.
We can think of kinetic energy being transferred to the ground in the following way:
1. Ball hits the ground, and transfers kinetic energy to lots of soil particles.
2. Soil particles move a bit and transfer the energy to soil particles ahead of them.
3. Kinetic energy is transferred to a very large number of soil particles, and they move so little that we consider this vibration motion.
4. This small vibration motion is now considered as internal energy or 'heat'.
Answer:
5.648 N/C
Explanation:
Given:
q₁ = 60 pC/m² = 60 × 10⁻¹² C/m²
q₂ = -80 pC/m² = - 80 × 10⁻¹² C/m²
Now,
Electric field is given as:
E =
ε₀ = Permittivity of Free Space
thus, due to charge q₁
E₁ =
or
E₁ = 3.389 N/C
and, due to charge q₂
E₂ =
or
E₂ = 4.519 N/C
Now,
The resultant electric field =
or
The resultant electric field =
or
The resultant electric field =
or
The resultant electric field = 5.648 N/C
Answer:
The engine generates a force of 11000 Newtons.
Explanation:
To determine the force, first you will need to calculate the acceleration. Acceleration is change in velocity over change in time, so in this case:
Force is then determined as
This is the forward force, i.a. one acting in the direction of the car's acceleration. we are told that there is no inefficiency in the engine and transmission, therefore this same force is generated by the engine.
Answer:
Explanation:
When force applied to the end of the rod in perpendicular direction then net torque on the rod is given as
Now another force is applied at mid point of the rod at an angle of 30 degree with the rod
so new value of torque is given as
so we have