Answer:
The depth of the well, s = 54.66 m
Given:
time, t = 3.5 s
speed of sound in air, v = 343 m/s
Solution:
By using second equation of motion for the distance traveled by the stone when dropped into a well:
Since, the stone is dropped, its initial velocity, u = 0 m/s
and acceleration is due to gravity only, the above eqn can be written as:
(1)
Now, when the sound inside the well travels back, the distance covered,s is given by:
(2)
Now, total time taken by the sound to travel:
t = t' + t''
t'' = 3.5 - t' (3)
Using eqn (2) and (3):
s = 343(3.5 - t') (4)
from eqn (1) and (4):
Solving the above quadratic eqn:
t' = 3.34 s
Now, substituting t' = 3.34 s in eqn (2)
s = 54.66 m
Answer =7,142.9W
I hope this helps (:
Matter> anything that has mass and takes up space.
Then it’s pure substances (goes on right) then definition is the one that is, “matter that only has 1 set of chemical and physical properties” > divides into compounds and elements. The detention of compounds is, contains two or more elements chemically bonded together.
Oxygen, is under elements.
Then on the left goes mixture; definition, “
Under compounds goes sodium, co2, h2o
under it goes homogeneous (left) def: “more than 1 type of matter that looks different through” and heterogeneous (right Im sure). Def. of heter is, “two or more substances chemically combined and can be separated.”
Under heter goes; soil and blood
Under homo: kool aid,
Chex mix and cake batter
That’s what I’ve gotten so far
Answer:
zero
Explanation:
For a solid conducting sphere, charges are present on the surface of the sphere due to a phenomenon known as electrostatic sheilding. This affects the charge present in the body and makes it zero. However, the electrostatic potential appears to be equal to the whole present point that shows on the surface. The surface of a spherical conducting solid sphere is known as an equipotential surface. Thus, the potential difference between the two opposite points on the surface of the sphere will also be zero.