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jek_recluse [69]
3 years ago
12

Back injuries are very common in humans and are often caused by lifting objects with the legs straight while leaning over; also

known as "lifting with the back." Use the concepts learned in this lab to explain why one should "lift with the legs" rather than with the back. Make sure to discuss the forces and torques involved, and how they differ in the two lifting techniques.
Computers and Technology
1 answer:
saveliy_v [14]3 years ago
8 0

Answer:

Back injuries are some of the most common injuries that occur when handling heavy objects, for example, when working in truck loading and unloading jobs, or lifting weights in a gym.

This type of injury is mainly caused by incorrect posture or body position when handling these weights. In essence, it is recommended that the back remain rigid and upright to avoid pressure on the lumbar zone and the cervical discs, transferring the center of force towards the legs (which have a capacity to exert much greater force than the mid-torso and back area). low).

In this way, the torque or upward pushing force that lifts the manipulated weights arises from the hamstrings and quadriceps, rather than directly out of the waist area. This prevents injuries such as herniated disc or low back pain, which are very painful and difficult to treat.

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Answer:

=(A4+B4+C4+D4+E4)/5

Explanation:

If we want to have the average of the passengers, first we must sum all the revenue and then divide it with passenger quantity.

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=(A4+B4+C4+D4+E4+F4)/6

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How many bits does it take to store a 3-minute song using an audio encoding method that samples at the rate of 40,000 bits/secon
blondinia [14]

Answer:

115200000 bits

Explanation:

Given Data:

Total Time = 3 minute = 3 x 60 sec = 180 sec

Sampling rate = 40,000 bits / sample

Each sample contain bits = 16 bits /sample

Total bits of song = ?

Solution

Total bits of song = Total Time x Sampling rate x Each sample contain bits

                             = 180 sec x 40,000 bits / sec x 16 bits /sample

                             = 115200000 bits

                             =  115200000/8 bits

                             = 14400000 bytes

                             = 144 MB

There are total samples in one second are 40000. Total time of the song is 180 seconds and one sample contains 16 bits. so the total bits in the song are 144 MB.

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