a vector is inclined at 45 degree North of east
so here we can say
here we can say that
East direction is along x direction
North direction is along Y direction
so here the given direction in vector form as
so here the given direction is in vector form shown as above
It is an important part of many cells and processes such as amino acids, proteins and even our DNA. It is also needed to make chlorophyll in plants, which is used in photosynthesis to make their food.
Hope this helps! ;)
What is the vertical component of its velocity at launch? v0y = 20*sin(53) = 16 m/s
Its horizontal component of velocity? v0x = 20*cos(53) = 12 m/s Neglect icing air friction, which of these components remains constant throughout the flight path? The horizontal component. (the vertical component is affected by gravity)
Which of these components determines the projectile's time in the air? The vertical component. (because the projectile falls down after t = 2*v0*sin(53)/g, you can see it doesn't depend on the horizontal component)
Answer:
20.4e18 electrons/second ≈ 2e19 electrons/second
Explanation:
Hi!
To solve this problem we are going to use Omh's Law:
V = RI
And the relation ship between the resistance R and conductivity:
R = L/(σA)
*here we are considering a omhic material*
The conductance σ is related to electron mobility and electron density by:
σ = nμ
Replacing all these relations in the omhs law, we get:
V = (LI)/(σA)
We know that both wire are subject to the same electric field, therefore V is the same for both, moreover, since no additional info for the length of the wires is given we are going to consider that L is the same for both. Therefore
This means that:
From the relation of the conductance and electron mobility and density, and the data given to us, we know that:
Also
Therefore:
That is:
Since I_A = 3*10^18 e/s
I_B = 20.4*10^18 e/s
Main answer: 26.78-kg
Supporting answer: Center of mass
Center of mass of a body is defined as the point at which the whole mass of the body is acting upon. Every body, has its own center of mass. For example, a square has its center of mass at the point where the diagonals of it intersect as well as a circle has its center of mass at the point where it got originated.
All 3-dimensional bodies has 3 axes of rotation. They are x, y and z axes respectively. These axes are used to point the center of mass accurately where it is located.
The co-ordinate in z-axes where the center of mass of a body is found is called as z-coordinate of the mass center(∑).
Now,
We are given with 3 units and its mass. They are:
- Circular disk of 2.5-kg
- Round shaft of 2.5-kg
- Square plate of 3.4-kg
We need to find the z-coordinate of the mass center of these units when present in a 3-dimensional plane.
As the round shaft is placed perpendicular to z plane as it is to hold the square plate we have z value to be 90 for round shaft.
Thus, it can be simplified as:
∑=
Therefore, the value of z-coordinate of mass center is 26.78kg.
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