The impact of the material
type with which the slope is made affects the acceleration. Acceleration will
be higher and smoother if the material of the slope surface is smoother as
opposed to a texture which is not smooth. Smoother surface allows more acceleration
because it will have less friction and resistance. Otherwise the friction will
slow the object down for example a grassy ground will have more friction than a
well maintained marble floor.
Answer:
Explanation:
Given
maximum height reached 
suppose Projectile is launched vertically with initial velocity u
applying equation of motion
where v=final velocity
u=initial velocity
a=acceleration
s=displacement
Here final velocity is zero so
for twice initial velocity
D) There will be less available for other living things.
Answer:
Sound Intensity at microphone's position is 
The amount of energy impinging on the microphone is 
Solution:
As per the question:
Emitted Sound Power, 
Area of the microphone, 
Distance of microphone from the speaker, d = 52.0 m
Now, the intensity of sound, 
at a distance away from the souce of sound follows law of inverse square and is given as:
Now, the amount of sound energy impinging on the microphone is calculated as:
If be the Incident Energy/
Then
The amount of energy incident per 1.00 
is:
Answer:
r = 0.664 m.
Explanation:
Let's write the equation of the magnetic force, the blacks syndicate vectors
F = q v x B
From this expression we see that the force is perpendicular to the velocity and the field, so it is a centripetal force, the modulus of the force is
F = q v B sinT
We write Newton's second law
F = m a
a = v² / r
q v B sinT = m v² / r
r = m v / (q B sinT)
Let's calculate
r = 9.1 10-31 2.9 107 / (1.6 10-19 1.7 10-3 sin8.4)
r = 26.4 10-24 / 0.3973 10-22
r = 0.664 m
This is the distance from where the electron penetrates
