Some people say you can tell if someone has HIV by looking at him or her. True or false? Why?
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Answer: 5 units
Let's begin by stating clear that movement is the change of position of a body at a certain time. So, during this movement, the body will have a trajectory and a displacement, being both different:
The trajectory is the path followed by the body (is a scalar magnitude).
The <u>displacement</u> is the distance in a straight line between the initial and final position (is a vector magnitude).
According to this, in the description of the object (figure attached) placed at 0 on a number line and moving some units to the left and some oter units to the right, we are talking about the path followed by the object, hence its trajectory. So, 13 units is its trajectory.
But, if we talk about displacement, we have to draw a straight line between the initial position of the object (point 0) to its final position (point 5).
Now, being this an unidimensional problem, the displacement vector for this object is 5 units.
The direction of the deflection on the screen caused by the vertical component of the Earth's magnetic field, taken as 20.0uT down is 6.3445*10^-16
Given,
E = Accelerating voltage = 2.47×10³ V
m = Mass of electron
Distance electron travels = 33.5 cm = 0.335 cm
By using the formula,
E = mv^2 /2
v =
v =
v = 29455256.08671 m/s
Deflection by Earth's Gravity
Δ = g s^2/v^2 / 2
Δ = 9.81 / 2
Δ = 6.3445 * 10^-16 m
Therefore,
Magnitude of the direction on the screen caused by the Earth's Magnetic field is 6.3445*10-16 m
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