Given,
Frequency of microwaves = 3 x 10^9 Hz
We know that,
Velocity (c) = Frequency x Wavelength
Velocity of light (c) = 3 x 10^8 m/s
Therefore,
Wavelength = Velocity ÷ Frequency = (3 x 10^8) ÷ (3 x 10^9) = 0.1 m
Those are the two points on the map of the stars called
the "solstices" ... one in June and one in December.
Answer:
A
Explanation:
The law of conservation of momentum is always conserved provided their no net external force acting on the body
Answer:
Δp = 620 N.s
Explanation:
- Newton's second law, was originally conceived as follows:
- In this way, a net force applied on an object, is equal to the rate of change of the momentum of the object regarding time.
for m= constant, it reduces to F= m*a.
- Replacing in (1) F= 62 N, and Δt = 10.0 s, we can solve for Δp (object's change in momentum) , as follows:
Kinetic energy can be used to develop electric energy which can be used as electricity.
<u>Explanation:</u>
The kinetic energy can be harnessed; much like some hydro power technologies harness water movement. A way to convert this kinetic energy into electric energy is through piezoelectric. By applying a mechanical stress to a piezoelectric crystal or material an electric current will be created and can be harvested.
Kinetic energy is also generated by the human body when it is in motion. Studies have also been done using kinetic energy and then converting it to other types of energy, which is then used to power everything from flashlights to radios and more.
