Answer:
D. I'm guessing
The gold-foil experiment showed that the atom consists of a small, massive, positively charged nucleus with the negatively charged electrons being at a great distance from the centre.
Answer:
The distance is 2 cm
Solution:
According to the question:
Magnetic field of Earth, B_{E} =
Current, I = 5.0 A
We know that the formula of magnetic field is given by:
where
d = distance from current carrying wire
Now,
d = 0.02 m 2 cm
The mass given is 25.0 grams. As for the change in temperature, I will assume that it start off at room temperature, 25°C.
Answer:
Part A:
(a): -121.26 ft/s.
(b): -121.13 ft/s.
(c): -121.052 ft/s.
(d): -121.026 ft/s.
Part B:
-121.00 ft/s.
Explanation:
Given that the height of the balloon after t seconds is
The average velocity of an object is defined as the total distance traveled by the object divided by the time taken in covering that distance.
where,
are the positions of the object at time and respectively.
<h2><u>
Part A:</u></h2><h2 />
- For the average velocity for the time period beginning when t=3 and lasting .01 sec.
For this case,
- For the average velocity for the time period beginning when t=3 and lasting .005 sec.
For this case,
- For the average velocity for the time period beginning when t=3 and lasting .002 sec.
For this case,
- For the average velocity for the time period beginning when t=3 and lasting .001 sec.
For this case,
<h2><u>
Part B:</u></h2>
The instantaneous velocity of the balloon at the given time is defined as the rate of change of its position at that time.
<u>Note:</u><em> The negative sign with all the velocities indicates that the direction of these velocities are downwards.</em>
<em> </em>