Answer:
Explanation:
A lot. That's why he was one of Boston's star hitters.
m = 0.15 kg
a = 3.0 * 10^4
F = ?
F = 0.15 * 3*10^4
F = 0.45 * 10^4
F = 4.5 * 10^3 Newtons
You should always express scientific notation as a number between 1 and 10 or 1 < x < 10. The power will determine the exact value of the number expressed as a scientific notation.
I would say false, violet has the highest frequency. <span />
Answer:
Explanation:
The work W required for the transfer is equal to the energy difference
where q is the charge we want to transfer and ΔV is the potential difference.
So, the work needed will be
Now, the average power is:
As the Watt is Joule/second, we need the 45 min multiplied by 60:
Taking all this together:
or
Answer:
the maximum frequency observed is 2.0044 10⁶ Hz
Explanation:
This is a Doppler effect exercise. Where the emitter is still and the receiver is mobile, therefore the expression that describes the process is
f ’=
the + sign is used when the observer approaches the source
typical speeds of a baby's heart stop are around 200 m / min
let's reduce to SI units
v₀ = 200 m / min (1 min / 60 s) = 3.33 m / s
let's calculate
f ’= 2 10⁶ ()
f ’= 2.0044 10⁶ Hz
f ’= 1,9956 10⁶ Hz
therefore the maximum frequency observed is 2.0044 10⁶ Hz
Hi!
So, nuclear power plants are interesting. Many people may automatically assume that they will 'pollute' our atmosphere, but they do <em>not </em>produce pollution!
There is one <em>very </em>serious issue with nuclear power plants, however. If not handled properly, we can spill serious radioactive material. This material can be <em>deadly. </em>
Another issue is that it is not a renewable source. It won't last forever, so we will eventually have to find another alternative.
On the flip side, nuclear energy is <em>extremely </em>efficient and powerful. It is also a fairly clean way to gather energy, which makes it an attractive option knowing the state of our environment.
Hopefully, this helps! =)