If you include the effects of falling through air, then you have to know the
shape, size, weight, and surface texture of the objects. You also have to
know the height from which they're dropped, and the temperature, pressure,
and humidity of the air. All these things make a difference in how they fall.
If you ignore the effects of falling through air, like build a giant metal tank
and pump all the air out of it, and ONLY talk about the effects of gravity, then
ALL OBJECTS accelerate at the same rate. If you drop two things from the
same height at the same time, then they both hit the ground at the same time,
traveling at the same speed, no matter what they are. They could be a piece of
tissue and a car !
There are several museums where they have a big glass pipe that you can
see through, and they pump the air out of the pipe and drop a feather and a
bowling ball from the top inside at the same time, and they both reach the
bottom together.
If gravity is the only force on an object, then all objects fall at the same rate.
Answer:
Well, it has to do something with the force of the train. It's pulling you, a force of gravity
However jumping off results in a different sort of energy, the train know is moving farther away as you jump down. So you end up in a different place
Explanation:
Answer:
Therefore,
Strength magnetic field at its center, B
Explanation:
Given:
Turn = N = 500
length of solenoid = l = 0.10 m
Current, I = 4.0 A
Radius, r = 0.01 m
To Find:
Strength magnetic field at its center, B = ?
Solution:
If N is the number of turns in the length, the total current through the rectangle is NI. Therefore, Ampere’s law applied to this path gives
Where,
B = Strength of magnetic field
l = Length of solenoid
N = Number of turns
I = Current
Therefore,
Substituting the values we get
Therefore,
Strength magnetic field at its center, B
Answer:
the first answer is correct
Answer:
71 cm
Explanation:
The formula to apply here is θ = 1.22λ/D,
diameter of central maximum =1.0 cm
wavelength, λ= 633 nm
Diameter of pinhole = 0.11 mm
where θ = arc length/distance = s/R
s/R = 1.22λ/D
(.005)/R = (1.22)(633 X 10^-9)/(1.1 X 10^-4)
R = .71 m which is 71 cm
