Answer:
Explanation:
You can always figure out something to say about a question like this if you have a formula to work with. Likely you do.
There are many ways it can be written
R = k * L / A
So here's the answer.
Resistance = k which depends of the properties of the material used to make the wire * the Length of the wire divided by the cross sectional area of the wire.
309 N is the magnitude of the resultant force formed by two forces of magnitudes 140 and 237 newton respectively, act at a point in the plane.
The resultant vector of two vectors:
P and Q is given by
R= 
where, P and Q are magnitudes of two vectors and θ is the angle between two vectors.
Here θ=73⁰ P=140N Q=237N R=? ( cos 73⁰ = 0.3)+19908
Therefore,
R= 
R = √19600 +56169+19908
R = √95677
R = 309 N
The parallelogram law of vector addition is a method that is used to find the sum of two vectors in vector theory.
We study two laws for the addition of vectors -
- the triangle law of vector addition
- the parallelogram law of vector addition.
The parallelogram law of vector addition is used to add two vectors when the vectors that are to be added form the two adjacent sides of a parallelogram by joining the tails of the two vectors. Then, the sum of the two vectors is given by the diagonal of the parallelogram.
Learn more about parallelogram law of vector addition here : brainly.com/question/26056717
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Answer:
t = 376.99 s
Explanation:
We must solve this problem with the equations and kinematics, let's start by looking for the speed of the vehicle,
v = d / t
v = 7/40
v = 0.175 m / s
Since the speed e remains constant, we must find the length of the circle is
L = 2π r
L = 2π 21
L = 131.95 m
In the problem it does not specify clearly, but in general the curves of the road correspond to half a circle, so the length of the road is
L ’= L / 2
L ’= 131.95 / 2 = 65.97 m
as the speed is constant
t = L ’/ v
t = 65.97 / 0.175
t = 376.99 s
The motion of particles during the transmission of wave energy
is periodic. A periodic wave is a continuous oscillating motion that connects
with simple harmonic motion. It is usual that periodic wave particles also
experiences simple harmonic motion. Additionally, the particles on the surface
of the water travel in circular motions forming a wave across the surface.
Half mv squared equaled mgh
.5(500)power 2=9.8h
h=12755m
plug h in to solve for m
*m's cancel out
