I am pretty sure that if a star has no measurable parallax it means that it is placed on unreachable distance so that you need a special equipment in order to get closer and measure <span> parallax. The point is that it is placed too deep in space and you are not able to measure it with basic equip.
Hope that helps.
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Answer:
Negative acceleration
Explanation:
We know that
v= u+at
Where v is the final velocity
u is the initial velocity velocity
a is the acceleration
t is time
When final velocity of train will be zero .
v=0
0= u+at
a=- u/t
So from above we can say that acceleration will be negative .When acceleration is positive then train will never come in rest position.
Answer:
is coiled
Explanation:
is because of the electromagnetic feild in a coil
The job that the fan is designed and built to do is to convert the electrical energy it uses into the kinetic (motion) energy of moving air.
I can't really guarantee that it accomplishes that with MOST of the electrical energy it uses, because I don't know how efficient your fan is. For example, if it's a really old fan, and one blade has the end broken off, and a lot of dust and mosquitoes have gotten into the motor, and it shakes and vibrates and makes a lot of noise when it's running, then it's converting a lot of the electrical energy into thermal energy (it gets hot when it runs) and some into sound energy too.
If you can live without the word "most" in the question, then we can assume that the fan is well designed and running like a top, and the answer is definitely choice-B .
Answer:
This is what you know: Force= 3150N
Distance= 75.5m
This is what you need to find: Work(W)
Use this formula: W=Fd
W= (3150N) × (75.5m)=237,825 Joules (J)