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borishaifa [10]
3 years ago
5

How do seatbelts reduce injury during a collision ?

Physics
1 answer:
RoseWind [281]3 years ago
3 0
Among drivers and front-seat passengers, seat belts reduce the risk of death by 45%, and cut the risk of serious injury by 50%. Seat belts prevent drivers and passengers from being ejected during a crash. People not wearing a seat belt are 30 times more likely to be ejected from a vehicle during a crash.
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Max and Jimmy want to jump on a trampoline. Max begins jumping in a steady pattern, making small waves in the trampoline. Jimmy
mylen [45]

Answer:

x_total = (A + B) cos (wt + Ф)

we have the sum of the two waves in a phase movement

Explanation:

In this case we can see that the first boy Max when he enters the trampoline and jumps creates a harmonic movement, with a given frequency. When the second boy Jimmy enters the trampoline and begins to jump he also creates a harmonic movement. If the frequency of the two movements is the same and they are in phase we have a resonant process, where the amplitude of the movement increases significantly.

         Max

               x₁ = A cos (wt + Ф)

         Jimmy

              x₂ = B cos (wt + Ф)

         

total movement

             x_total = (A + B) cos (wt + Ф)

 Therefore we have the sum of the two waves in a phase movement

8 0
3 years ago
Chemical reactions may occur quickly or slowly true or false
lora16 [44]
The answer is true!!
8 0
3 years ago
Sopranos can sing notes at very high frequencies—over 1000 Hz. When they sing such high notes, it can be difficult to understand
STALIN [3.7K]

Answer: High frequency= High harmonics= Different formants

Explanation:

We are given that sopranos can sing notes at very high frequencies.

Now, when they sing high notes it is difficult to understand their words.

According to the  concept of harmonics, it is the integer multiple of the fundamental frequency. And formants are the different frequencies which in turn give us different vocalizations.

Now, the frequency is over 1000 Hz this implies that the harmonics will be greater and in turn formants will be different. So, this is the reason it is difficult to understand the words of sopranos when they are singing at very high frequencies.

3 0
3 years ago
Standard safety procedures include
tatiyna

Answer:

Wait for

Explanation:

6 0
3 years ago
You are riding a bicycle. You apply a forward forceof 50 N, and you and the bicycle have a combined mass of 100 kg. What is the
stich3 [128]
Use the equation F=ma to solve for the acceleration

Force: 50 N
Mass: 100kg

50=100a

a= .5 m/s/s
8 0
3 years ago
Read 2 more answers
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