Answer:
15,569,653.3 Joules(J)
Explanation:
The equation used to find Kinetic Energy (KE) is
KE = 
m 
You have been given
m = 450kg
v = 947km/h
KE = ???
Firstly, we need to convert the km/h into m/s as this is the unit used in the KE equation
This can be done by dividing by 3.6
947km/h = 263.056m/s
Substitute you values into the equation
KE = m
KE = * 450 * 
KE = 15,569,653.3 Joules(J)
Round your answer as appropriate
The sentence can be completed as follows:
"<span>The wavelength range of colors visible to humans ranges from 350 nm to 750 nm. light that most of us perceive as red is at 750 nm."
In fact, each different color is associated to a different sub-range of this range of wavelengths. Approximately, they are:
- violet: 350-450 nm
- blue: 450-495 nm
- green: 495-570 nm
- yellow: 570-590 nm
- orange: 590-620 nm
- red: 620-750 nm</span>
It's called condensation. That is what that wetness on the outside of the cup is.
First law: A ball is stationary on the ground. It doesn't want to move, but eventually a person will come and kick it.
Second law: A car will never be constant it will have to stop then go . Objects take time to accelerate and also take time to decelerate.
Third law: If your sitting on a chair at a table, and you want to go, what do you do? Push against the table. The table will push back at you and hence, your chair moves. If this law wouldn't work then you would have to move the chair manually.
Answer:
378 KWh
Explanation:
We'll begin by converting 1.2×10³ W to KW. This can be obtained as follow:
10³ W = 1 KW
Therefore,
1.2×10³ W = 1.2×10³ W × 1 KW / 10³ W
1.2×10³ W = 1.2 KW
Next, we shall convert 6.3×10² mins to hours (h). This can be obtained as follow:
60 mins = 1 h
Therefore,
6.3×10² mins = 6.3×10² mins × 1 h / 60 mins
6.3×10² mins = 10.5 h
Finally, we shall determine the electrical energy in KWh used for 1 month (i.e 30 days). This can be obtained as follow:
Power (P) = 1.2 KW
Time (t) for 1 month (30 days) = 10.5 h × 30
= 315 h
Energy (E) =?
E = Pt
E = 1.2 × 315
E = 378 KWh
Thus, the electrical energy used for 1 month (i.e 30 days) is 378 KWh.
