Answer:
Explanation:
I = Hearing intensity = 
A = Area = 
d = Diameter = 7.9 mm
r = Radius = 
Power is given by
t = Time the eardrum is exposed to sound = 1 second
Energy is given by
The energy transferred to the eardrum is
Hi, I crunched some numbers for you and got the following results:
Starting from initial velocity of zero (rest) the sled reached a top speed of 257.3 m/s^2.
Upon slowing down or braking, the sled slowed down very hard to about 76.35 m/s^2.
Acceleration and Gravitational Acceleration were the main interpretations obviously in this problem.
Also, if my math was correct, the speed of the sled slowing down was around 7.7 G's (acceleration due to gravity)! That is about on par with the acceleration of a F-16 Fighter Jet pulling out of a dive!--> (79 m/s^2) The human test subject probably came close to blacking out I would guess as well or very close to!
Velocity = distance / time
So: The time in which the wave propagates through air which is its medium along with the distance the wave travels so a point are needed to give us our velocity.
In this case we only have velocity and time
So lets rearrange our equation to fit what we are solving for: distance
Vt = d
Now plug in our values:
(330)(0.40) = d
d = 132 m
So the distance between you and your neighbor is 132 m as they perceive the sound at time t= 0.4 and a speed of sound of 330 m/s.
Electromagnetic ionizing radiation emitted<span> from the nucleus of an atom when it de-excites. Gamma </span>rays<span> are best thought of as "photons," i.e., packets of pure energy. The energy of a gamma </span>ray<span> is usually between 50 and 2000 keV (0.05 to 2 MeV). Gamma </span>rays<span> can be </span>emitted during radioactive decay.
ANSWER
A convex lens acts a lot like a concave mirror. ... A concave lens acts a lot like a convex mirror. Both diverge parallel rays away from a focal point, have negative focal lengths, and form only virtual, smaller images.
