Mass production made technology affordable to the middle class. The automobile industry's effects contributed to such industries as highway building, motels, service stations, used car dealerships and new housing outside the range of mass transit.
Im not really positive on this but if i'm not mistaken i believe it's number 2.
Answer:
B = 4.41 10⁻⁴ T
The direction of the magnetic field is perpendicular to the speed in such a way that if the force is in the clokwise direction
Explanation:
For this problem let's use Newton's second law where the force is magnetic
F = ma
the magnetic force is
F = q v x B
The bold are vectors, as they indicate that the magnetic field and velocity are perpendicular the magnitude of the force is
F = q v B
acceleration is centripetal
a = v² / r
we substitute
q v B = m v² / r
B = m v / q r
Since the velocity modulus is constant, we can use the relation of uniform motion with the time of a lap that we call period (T)
v = d / t
the length of the circle is
d = 2π r
v = 2π r / T
we substitute in the magnetic field equation
B = m /qr (2π r / T)
B = m/q 2π / T
we calculate
B = 2 9.1 10⁻³¹ / 2 1.6 10⁻¹⁹ 2π / 81 10⁻⁹
B = 4.41 10⁻⁴ T
The direction of the magnetic field is perpendicular to the speed in such a way that if the force is in the clokwise direction, for example if the speed goes on the positive axis the field goes up
An object or any location can be represented on a two-dimensional surface like a paper or computer screen. This representation is known as map. Most maps do not take into account the elevation of the object or the location they representing. On the other hand, Topographic maps use contour lines to represent the third dimension and to show elevation change on or below the surface of the earth.
Explanation:
Potential Into Kinetic
Swings work by converting potential energy into kinetic energy, then kinetic energy back into potential energy, over and over again. The kinetic energy is the fast part of swinging; it's the speed you have as you rush back and forth. Potential energy is the high part of swinging.