Answer:
Explanation:
Given that,
Magnetic force acting on an electron, 
The magnitude of the magnetic field,
We need to find the magnitude of the velocity. We know that the magnetic force is given by :
Where
v is the velocity
So,
So, the magnitude of velocity is
.
Taking significant figures into account, 6.01 has 3 significant figures, and 12 meters has 2. In the rule of multiplication, the answer has to follow the least number of significant figures. This means that the answer we obtain must have only 2 significant figures. To find the area of the rectangle, the two sides are merely multiplied. This is shown below:
6.01 * 12 = 72.12 = 72
Therefore, the area is 72 sq. meters
Are there options to this question?
A manipulated variable is the independent variable in an experiment. It’s called “manipulated” because it’s the one you can change. In other words, you can decide ahead of time to increase it or decrease it. In an experiment you should only have one manipulated variable at a time. The manipulated variable is the independent variable in an experiment.
Answer:
96 mph
Explanation:
There are a couple of ways of doing this, but I will just use a proportion.
first off 1 hour = 60 minutes.
So 144/90 = x/60 will give me the answer per 60 minutes of miles per hour.
cross multiply to get 90x = 8640
divide by 90 to get 96 miles per 60 minutes or 96 mph.
Hope this helped.
