Aplane is flying with an airspeed of 190 miles per hour and heading 155°. the wind currents are running at 40 miles per hour at 160° clockwise from due north. use vectors to find the true course and ground speed of the plane. (round your answers to the nearest ten for the speed and to the nearest whole number for the angle.)

Ground speed: 230 miles per hour.

Course: 156° clockwise from due north.

Explanation:

The plane speed is 190 heading 155° clockwise due north, is east is the horizontal of the coordinate plane (positive x-axis), the angle from the x-axis is:

The 360° is to avoid using negative angles, and the -90° is because the angle given in the data is measured from the north. Now do the same with the speed of the wind current (40 miles per hour at 160° clockwise from due north):

To find the course and ground speed of the plane find the components in x and y for both speeds and add them up.

The ground speed is the magnitude of this new vector:

The course is the angle:

This value of is the angle between the negative y-axis and the speed vector (see the graph). For the angle clockwise due north add 180°.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia