Question 1: Car Zoom In this activity, you will examine the horizontal displacement and velocity of a car using Tracker, a free scientific tool available through the Open Source Physics Project.

To begin your investigation, open the Tracker Car Zoom experiment. Click play () to watch the movie. The other video controls allow you to rewind () the video or step forward () or backward () one frame at a time.

Part A

Based on what you saw, how would you describe the car’s velocity? Discuss both its speed and its direction. Mention any change to speed or direction you observe.

ANSWER:The car appears to be traveling at a constant speed from left to right. Since it doesn’t change either speed or direction, velocity is constant.

1 the 4 is sig

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