Answer:
Refraction is an effect that occurs when a light wave, incident at an angle away from the normal, passes a boundary from one medium into another in which there is a change in velocity of the light. The wavelength decreases as the light enters the medium and the light wave changes direction.
Explanation:
Answer:
23.3 g/cm3
Explanation:
First of all, this should be in the math section. I just so happen to also be good at math. Cheers!
Using the formula for bodies in projectile
motion, we can calculate for the velocity v:
d = (v^2) * (sin2theta) / g
Substituting the given values:
193 m = (v^2) * (sin(2*44.4)) / (9.8 m/s^2)
v= 50.5 m/s
Calculating for the impulse I,
I = mf * vf – mi * vi
since mf = mi and vi = 0 (the golf ball starts
form rest)
I = m * vf
I = 0.046 kg * 50.5
m/s
I = 2.323 kg m/s
Calculating for the force of impact:
I = F t
<span>F = (2.323
kg m/s) / (6.92 x 10^-3 s)
</span>
<span>F =335.7 kg m/s^2 = 335.7 N</span>
Answer:
8760 N
Explanation:
think this is the right answer :)
Answer:
c) paractically the same weight
Explanation:
The force of gravity acts on all apples on an apple tree. Some apples are twice as far from the ground as others. For the same mass these twice-as-high apples have _________.a) 1/4 weightb) 1/2 weightc) paractically the same weigh
from newton's law of motion
states that
the rate of change in momentum of a body is directly proportional to the force applied on the body
f
=mdv/dt
dv/dt=a
f=kma
f=ma, where k is constant and equal to 1
a=g since the body is falling under gravity
acceleration of the apples become acceleration due to gravity
W=mg
since they all have equal mass, then the weight on the body will be practically and obviously the same