Answer:
A) Three hole punch and either a layered plastic or paper
B) Identify the lengths involved ,
Length of input arm / length of output arm = L1/ L2
Explanation:
<u>a) Materials involved includes :</u>
Three hole punch and either a layered plastic or paper
Identify the forces acting on the three-hole punch which are Input and output forces
Identify the points where they act
<u>B) procedures involved </u>
The mechanical advantage = output force / input force
step one: Identify the lengths involved
assuming no friction or relatively small friction \
mechanical advantage can be calculated as : Length of input arm / length of output arm = L1/ L2
Answer:
The mass of the volleyball is 0.32 kg.
Explanation:
Given that,
Initial speed of the ball, u = 4.2 m/s
Final speed of the ball, v = -24 m/s
The impulse delivered to the ball by the player is -9.3 kg-m/s.
To find,
Mass of the volleyball.
Solution,
The change in momentum of the volleyball is equal to the impulse delivered to the ball. It is given by :
m = 0.32 kg
So, the mass of the volleyball is 0.32 kg.
Answer:
Explanation:
= Refraction index of water = 1.333
= Refraction index of air = 1
= Angle of sunlight = 30°
From Snell's law we have
The angle measured from the vertical does the sunlight strike thesurface of the water is