Option (c) is correct.
Explanation:
initial velocity along vertical=0
velocity along horizontal Vx
acceleration along the vertical=9.8 m/s²
displacement along vertical,h=40 m
distance along horizontal= 10 m
using the kinematic equation
h= vi*t + 1/2 g t²
40=0(t) + 1/2 (9.8)t²
t²=8.163
t=2.857 s
now the displacement along vertical= x= Vx* t
10=Vx (2.857)
Vx=3.5 m/s
The molecule they all come from is water molecule
get hold of some of her equipment, and throw it away from the craft. she should recoil to the craft ... and hope ???
It depends, What is the balloon filled with? Just air, heilum, water, etc. If its just air then the bowling ball would most likly hit first, but if the balloon is filled with water it would problably hit at the same time, theres also air resistace to think about is there any or it is almost like a vaccum chamber?
Answer:
The width of the strand of hair is 1.96 10⁻⁵ m
Explanation:
For this diffraction problem they tell us that it is equivalent to the diffraction of a single slit, which is explained by the equation
<h3> a sin θ =± m λ
</h3><h3 />
Where the different temrs are: “a” the width of the hair, λ the wavelength, θ the angle from the center, m the order of diffraction, which is the number of bright rings (constructive diffraction)
We can see that the diffraction angle is missing, but we can find it by trigonometry, where L is the distance of the strand of hair to the observation screen and "y" is the perpendicular distance to the first minimum of intensity
L = 1.25 m 100 cm/1m = 125 cm
y = 5.06 cm
Tan θ = y/L
Tan θ = 5.06/125
θ = tan⁻¹ ( 0.0405)
θ = 2.32º
With this data we can continue analyzing the problem, they indicate that they measure the distance to the first dark strip, thus m = 1
a = m λ / sin θ
a = 1 633 10⁻⁹ 1.25/sin 2.3
a = 1.96 10⁻⁵ m
a = 0.0196 mm
The width of the strand of hair is 1.96 10⁻⁵ m
