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Radda [10]
3 years ago
12

If an object is in freefall it will experience air blank which generates a drag force

Physics
2 answers:
kogti [31]3 years ago
5 0

Answer:

Resistance

Explanation:

I believe it is air resistance but I could be wrong.

tia_tia [17]3 years ago
4 0

The question is fishing for "air resistance", but that's a mistake by whoever wrote the question.

"Free fall" means that gravity is the ONLY force on the body. If there's any air resistance, then it's not free fall.

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When frequency division multiplexing (FDM) is used to aggregate several modulated channels together, no separation between chann
zaharov [31]

Answer:

False.

Separation between channel is required when frequency division multiplexing (FDM) is used to aggregate several modulated channels together.

Explanation:

In Frequency Division Multiplexing (FDM), the total bandwidth is divided to a set of frequency bands that do not overlap. Each of these bands is a carrier of a different signal that is generated and modulated by one of the sending devices.

The frequency bands are separated from one another by strips of unused frequencies called the guard bands, to prevent overlapping of signals.

The modulated signals are combined together using a multiplexer (MUX) in the sending end. The combined signal is transmitted over the communication channel, thus allowing multiple independent data streams to be transmitted simultaneously. At the receiving end, the individual signals are extracted from the combined signal by the process of demultiplexing (DEMUX).

6 0
3 years ago
To estimate the distance in kilometers of a flash of lightning, count the number of seconds between seeing the flash and hearing
Triss [41]

Answer:

Divide by 3

Explanation:

In order to estimate the distance traveled by a lightening flash in kilometers, we follow these simple steps:

  1. Make a count of the number of seconds in between the period a flash occur and the thunder accompanied by the lightening flash is heard.
  2. Dive the total number of seconds by 3 to get the distance traveled by the flash. This is because in order to cover 1 km, it roughly takes 3 seconds.
8 0
3 years ago
An objects mechanical energy never changes it simply changes between
tatiyna
Actually moving and not. It is the sum of potential and kinetic energy.
4 0
3 years ago
Three cars (car F, car G, and car H) are moving with the same velocity when the driver suddenly slams on the brakes, locking the
nika2105 [10]

Answer:

a) Option D

b) Option A

Explanation:

a) Option D

Because a massive car will have more inertia which will make the car move faster but a massive car simultaneously will have more friction thereby restricting its movement in the forward direction. Hence, all the three cars will move equal distance.

b) Option A, Car F

Being most massive car, the frictional force required to stop the car will be highest.  

4 0
3 years ago
As a tractor pulls a plow across a field, it exerts a force on the plow in the forward direction. What is the "equal and opposit
Karolina [17]

Answer:

the force of the plow pulling backward on the tractor

Explanation:

7 0
3 years ago
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