Answer:
1) Force on top face
2)Force on the side face
Explanation:
a)
We know that
Pressure shall be calculated at a depth of (1-0.45) meters from the top of the water surface
Thus force is calculated as under
b)
The force on one of it's sides is calculated in the same manner except that the pressure is obtained at the centroidal level of the face of cube
Thus
Answer:
4
Explanation:
Given parameters:
Force input = 30N
Force output = 120N
Unknown:
Mechanical advantage of the lever = ?
Solution:
The mechanical advantage is the quantity that describes how much a simple machine is able to multiply force.
This is expressed as:
Mechanical advantage = Force output / Force input
Mechanical advantage = = 4
Explanation:
Distance travelled by bus(s)=15 miles
Time taken(t)=18 minutes
=18/60 hours=0.3hours
now
average speed=distance travelled /time taken
=15/0.3 =50 miles per hour
Answer:
450m
Explanation:
You would use the equation x-x0=0.5(v0+v)t as you have the time and velocities. x-x0(Change in position/displacement)=0.5(0+30)30. The distance will be 450m.
Answer:
I'm guessing it could either be C it B
Explanation:
the weight of a penny is 2.500 gram so I'm guessing the one with the lowest plus the weight of the penny might add up to why it reaches the ground so fast