item D is independent because it doesnt affect its signal strenght at all but other three factors does.
Decreases because the lower the temperature the less active the particles are
1. is "A"
2. is "A"
3. is "B"
4. is "D"
Answer:
The officer's unit detects this 135-mile-per-hour speed and should subtract the patrol car's 70-mile -per-hour ground speed to get your true speed of 65 miles per hour. Instead, the officer's ground-speed beam fixes on the truck ahead and measures a false 50-mile-per-hour ground speed.
Explanation:
A speedometer or speed meter is a gauge that measures and displays the instantaneous speed of a vehicle. Now universally fitted to motor vehicles, they started to be available as options in the early 20th century, and as standard equipment from about 1910 onwards.
Answer:0.642
Explanation:
Given
initially car is at rest i.e u=0
When car hits the truck it's velocity is 4.5 m/s
it hits the truck after 7 sec
Now average acceleration of car is =
average acceleration of car =
average acceleration of car=
average acceleration of car=
Taking Down hill as positive x axis
average acceleration of car=