Answer:
10kN
Explanation:
Given data
m1= 50kg
u1= 3m/s
m2= 100kg
u2= 6m/s
v1= 2m/s
time= 0.04s
let us find the final velocity of Bruce v1
from the conservation of linear momentum
m1u1+m2u2=m1v1+m2v2
substitute
50*3+100*6= 50*v1+100*2
150+600=50v1+200
750-200=50v1
550= 50v1
divide both sides by 50
v1= 550/50
v1=11 m/s
From
F= mΔv/t
for Bruce
F=50*(11-3)/0.04
F=50*8/0.04
F=400/0.04
F=10000
F=10kN
for Max
F=100*(6-2)/0.04
F=100*4/0.04
F=400/0.04
F=10000
F=10kN
Answer:
Explanation:
We shall apply Gauss's theorem to calculate the electric flux through a closed surface due to charge contained in side
Total charge inside surface = zero
So total electric flux through closed surface will be zero.
or electric flux going out = electric flux coming in
(a) The electric field is zero everywhere on the surface. True
(b) The electric field is normal to the surface everywhere on the surface. - false
(c) The electric flux through the surface is zero. True
(d) The electric flux through the surface could be positive or negative - false
(e) The electric flux through a portion of the surface might not be zero - True
Cutting and polishing exposed rock
r = distance of moon from earth = 3.84 x 10⁸ m
R = size of the object on moon = 0.67 m
D = diameter of the lens = ?
= wavelength of light = 550 x 10⁻⁹ m
Using the equation for Rayleigh criterion
R/r = 1.22 /D
inserting the values
0.67/(3.84 x 10⁸) = 1.22 (550 x 10⁻⁹) /D
D = 384.6 m
Constructive interference will occur, which means the waves will combine.
In destructive inference, the waves cancel each other out.
Hope this helps :)
