True or False? Sound travels faster through metal than air
2 answers:
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Answer:
the list of forces from greatest to least is Y, W, X, Z
Explanation:
Given data:
5 pairs of charged plates with force between each pair as : F, W, X,Y, Z
Also given are the charges q1 and q2 of plates in each pair and the distances between them (refer attachment)
To find: to arrange the force from greatest to least.
Initial step is to calculate the force value using the given data of charges and distance between plates.
We know that the force between two charged plates is given by the formula:
F =
where,
q1 and q2 are charge of the two plates
r is the distance between two plates
k is coulomb constant
Since the problem involves comparison of forces, the k values is not necessarily discussed.
Now we have to calculate force values
F =
W =
X =
Y =
Z =
Assume values of q = 1 and d = 2, we get
F = 0.5k
W = 0.5k
X = 0.0625k
Y = 0.75k
Z =0.025k
F and W are though same, the calculated force value shows W = 2F
Hence W is greater than F.
Therefore, the list of forces from greatest to least is Y, W, F, X, Z
Hence answer is : Y, W, X, Z
The kinematics of the uniform motion allows us to find the final position vector
r = (-41.575 i + 42.253 j) m
Given parameters
- the starting position x = -17.5 m y = 23.1 m
- jump time t = 10.7 s
- The average velocities vₓ = -2.25 m / s and v_y = 1.79 m / s
to find
- the final position
The uniform motion occurs when the velocity of the bodies is constant, in this case the relationship can be used for each axis
v =
x = x₀ + v t
Where vₓ it is the velocity, x the displacement, x₀ the initial position and t the time
Let's set a reference system with the horizontal x-axis. Regarding which we carry out the measurements
X axis
we look for the final position
x = x₀ + vₓ t
x = -17.5 -2.25 10.7
x = -41.575 m
Y Axis
we look for the final position
y = y₀ + v_y t
y = 23.1 + 1.79 10.7
y = 42.253 m
In conclusion, using the kinematics of uniform motion, find the final position vector
r = (-41.575 i + 42.253 j) m
learn more about uniform motion here:
Answer:
Explanation:
