Answer:
Well,
Explanation:
In a wave, energy is transported without the transport of water. Basically, a wave can be described as a disturbance that travels through a medium, transporting energy from one location to another location without transporting matter.
Answer:
5.2 m
Explanation:
from the question we are given the following
depth of pool (d) = 3.2 m
height of laser above the pool (h) = 1 m
point of entry of laser beam from edge of water (l) = 2.5 m
we first have to calculate the angle at which the laser beam enters the water (∝),
tan ∝ = \frac{1}{2.2}
∝ = 24.44 degrees
from the attached diagram, the angle with the normal (i) = 90 - 24.4 = 65.56 degrees
lets assume it is a red laser which has a refractive index of 1.331 in water, and with this we can find the angle of refraction (r) using the formula below
refractive index = \frac{sin i}{sin r}
1.331 = \frac{sin 65.56}{sin r}
r = 43.16 degrees
we can get the distance (x) from tan r = \frac{x}{3.2}
tan 43.16 = \frac{x}{3.2}
x = 3 m
To get the total distance we need to add the value of x to 2.2 m
total distance = 3 + 2.2 = 5.2 m
Answer:
the answer is 0 .75m
Explanation:
where are finding the distance the speed is given as well as the time..so you multiple the speed with the time thus you get the distance..i hope that's the answer..
Low-melt wire encased in iron doesn't sound like a good idea.
I can think of two things wrong with it:
1). A fuse is designed to melt if the wire gets too hot.
If the wire is mounted in iron, the heat from the wire will
just soak away into the iron, and the fuse-wire will never
get hot. So this fuse would not do its job and protect you
or your circuit.
2). Iron is a pretty good conductor of electricity too.
So if the fuse wire is mounted in iron, then touching the
iron is almost the same thing as touching the fuse-wire.
This design would be very dangerous, and you'd have to
encase the iron in something ELSE ... like maybe glass
or ceramic ... to prevent people from touching the iron.
The answer to this question is D.) straight line motion
