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babunello [35]
3 years ago
8

Which action would be most likely to cause hearing loss?

Physics
2 answers:
Archy [21]3 years ago
4 0
If you dont wear protection while shooting a rifle it will damge your hear
MatroZZZ [7]3 years ago
4 0
A.shooting a rifle,rifles produce up to 140db and it only take about 140db to permanently damage one's hearing severely also it depends how close it is fired to one's ear.
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Starting from rest near the surface of the Earth, a 25-kg beam slides 12 m down a vertical pine tree, and has a speed of 6 m/s j
Mamont248 [21]

Answer:

The frictional force acting on the bear during the slide is 207.5 N

Explanation:

Given;

mass of beam, m = 25-kg

vertical height, h = 12 m

speed of fall, v =  6 m/s

Change in potential energy of the beam:

ΔP.E = -mgh = - 25 x 9.8 x 12 = -2940 J

Change in kinetic energy of the beam:

Δ K.E = ¹/₂mv² = ¹/₂ x 25 x (6)² = 450 J

Change in thermal energy of the system due to friction:

ΔE = - (ΔP.E  + Δ K.E)

ΔE = - (-2940 J + 450 J)

ΔE = 2940 J - 450 J = 2490 J

Frictional force (in N) acting on the bear during the slide:

F x d = Fk x h = ΔE

Where;

Fk is the frictional force

Fk = ΔE/h

Fk = 2490J / 12m

Fk = 207.5 N

Therefore, the frictional force acting on the bear during the slide is 207.5 N

3 0
3 years ago
Is the study of muscle movement in the human body and example of biology and physics
Thepotemich [5.8K]
Yes, in broader terms for people who actually study this, this is called biomechanics. Bio refers to the human body and it moving, while the physics part comes in when a ball is thrown for example and you want to know how far it is thrown.
3 0
4 years ago
What does not affect the gravitational potential energy of an object
natta225 [31]
Anything really like velocity? as long as its not mass, gravity, and height

Ep = mgh

Those are the only variables that affect potential energy
8 0
3 years ago
Read 2 more answers
What is power?
Xelga [282]

Answer:

b- how much work can be done in a given time

7 0
3 years ago
Read 2 more answers
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats faci
olasank [31]

Answer:

r = 2.93 m

Explanation:

mass of the person = 64.8 kg

speed v = 3.44 m/s                  

Force F = 261 N

using formula                        

F = \dfrac{mv^2}{r}

the radius of the chamber is given by

r = \dfrac{mv^2}{F}                  

r = \dfrac{64.8\times 3.44^2}{261}

r = 2.93 m                                      

so, the radius of a chamber is equal to 2.93 m

6 0
3 years ago
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