If I had to go with any of those answers, It would be A maybe D, But im not too sure on how to decide between them. Because Einstein mentioned the sun in his theory which has a very large mass <span> 1.989 x 10 with a exponent of 30 to be exact. Hope this helped though.</span>
Answer:
q = 1.96 10⁴ C
Explanation:
The elective force is given by
= q E
Where E is the electric field and q the charge.
Let's use Newton's law of equilibrium for the case of the suspended drop
F_{e} –W = 0
F_{e} = W
q E = m g
q = m g / E
Let's calculate
q = 2.0 10⁵ 9.8 / 100
q = 1.96 10⁴ C
<span>The turbine, since it is a rotary engine that turns into mechanical energy the energy of a stream of water, steam or gas. The basic element of the turbine is the wheel or rotor, which has blades, propellers, blades or hubs placed around its circumference, such that the moving fluid produces a tangential force that drives the wheel and turns it. This mechanical energy is transferred through an axis to provide movement of a machine, a compressor, an electric generator or a propeller.</span>
Atoms from two different elements may have the same number of neutrons, but never the same number of protons
The kinetic energy of flywheel of a stationary engine is 120J.
<u>Explanation:</u>
Key Terms:
- torque: A rotational or twisting effect of a force; (SI unit newton-meter or N m; imperial unit foot-pound or ft-lb)
- inertia: The property of a body that resists any change to its uniform motion; equivalent to its mass.
- angular velocity: A vector quantity describing an object in circular motion; its magnitude is equal to the speed of the particle and the direction is perpendicular to the plane of its circular motion.
Here , angular acceleration = 2
Angular velocity w = Angular acceleration × time
∵ Acceleration is 2 rad per second sq. So , time is 1 sec.
⇒ Angular velocity (w) =
⇒ Angular velocity (w) =
Now, kinetic energy ⇒
⇒
⇒
⇒
∴ The kinetic energy of flywheel of a stationary engine is 120J.