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Tcecarenko [31]
2 years ago
10

When a person is standing upright, the weight of anything being lifted and carried in the hands is first reflected onto the:

Physics
1 answer:
hichkok12 [17]2 years ago
8 0

Pelvic girdle

In human anatomy, the pelvis is a complex of bones that connects the trunk and the legs, supports and balances the trunk, and houses and supports the intestines, the urinary bladder, and the internal organ. It is sometimes referred to as the bony pelvis or the pelvic girdle.
One is located on the left side of the body and the other is located on the right. They come together to make the pelvic girdle, a portion of the pelvis. The hip bones are attached to the upper portion of the skeleton at the sacrum.
The pelvic girdle's main function is to support the upper body's weight while seated and transfer that weight to the lower limbs while standing. For the muscles in the trunk and lower limbs, it functions as attachment point.

To learn more about pelvic girdles please visit -
brainly.com/question/24394348

#SPJ4

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A rock thrown straight up takes 4.2 s to reach its maximum height what was its initial velocity
liubo4ka [24]

Consider the upward direction of motion as positive and downward direction of motion as negative.

a = acceleration due to gravity in downward direction = - 9.8 \frac{m }{s^{2}}

v₀ = initial velocity of rock in upward direction = ?

v = final velocity of rock at the highest point = 0 \frac{m }{s}

t = time to reach the maximum height = 4.2 sec

Using the kinematics equation

v = v₀ + a t

inserting the values

0 = v₀ + (- 9.8) (4.2)

v₀ = 41.2 \frac{m }{s}


8 0
3 years ago
According to Newton’s law of universal gravitation, which statement is true?
SIZIF [17.4K]

Option (a) is correct.

Falling objects accelerate as they approach the ground.This is because of the force of gravity acting on the falling objects. so the velocity of these objects increases continuously as they approach the ground. the acceleration acting on the falling objects is a constant ( close to the surface of earth) and is called as acceleration due to gravity denoted by g. value of g=9.8 m/s².

4 0
3 years ago
Read 2 more answers
HELP ASAP!!!! Which of the following is an example of a hypothesis? A) What will happen if a sugar cube in boiling water? B) I t
Maurinko [17]

Answer:

C) If an ice cube is placed into a boiling water, then it will melt in less than 2 minutes.

Explanation:

7 0
3 years ago
12
tensa zangetsu [6.8K]

Answer:

1) Determine the domain of the following functions: d ... 3) If g(x) = x + 3 and f(x)= x² – 2x, find the value of f(g(a)). ... 6) Given the graph of f(x) to the right, determine: ... 8) Given f(x)= x? and g(x)= 2* The inverse of g is a function, but the inverse off is ... -3(x-1)= -5 4 (-3). -3x+ 3 = y. 10) The graph of a function f (x) is given at the.

Explanation:

3 0
3 years ago
In part (a), suppose that the box weighs 128 pounds, that the angle of inclination of the plane is θ = 30°, that the coefficient
morpeh [17]

Answer:

v(t) = 21.3t

v(t) = 5.3t

v(t) = 48 -48 e ^{ \frac{t}{9}}

Explanation:

When no sliding friction and no air resistance occurs:

m\frac{dv}{dt} = mgsin \theta

where;

\frac{dv}{dt} = gsin \theta , 0 < \theta <  \frac{ \pi}{2}

Taking m = 3 ; the differential equation is:

3 \frac{dv}{dt}= 128*\frac{1}{2}

3 \frac{dv}{dt}= 64

\frac{dv}{dt}= 21.3

By Integration;

v(t) = 21.3 t + C

since v(0) = 0 ; Then C = 0

v(t) = 21.3t

ii)

When there is sliding friction but no air resistance ;

m \frac{dv}{dt}= mg sin \theta - \mu mg cos \theta

Taking m =3 ; the differential equation is;

3 \frac{dv}{dt}=128*\frac{1}{2} -\frac{\sqrt{3} }{4}*128*\frac{\sqrt{3} }{4}

\frac{dv}{dt}= 5.3

By integration; we have ;

v(t) = 5.3t

iii)

To find the differential equation for the velocity (t) of the box at time (t) with sliding friction and air resistance :

m \frac{dv}{dt}= mg sin \theta - \mu mg cos \theta - kv

The differential equation is :

= 3 \frac{dv}{dt}=128*\frac{1}{2} - \frac{ \sqrt{ 3}}{4}*128 *\frac{ \sqrt{ 3}}{2}-\frac{1}{3}v

= 3 \frac{dv}{dt}=16 -\frac{1}{3}v

By integration

v(t) = 48 + Ce ^{\frac{t}{9}

Since; V(0) = 0 ; Then C = -48

v(t) = 48 -48 e ^{ \frac{t}{9}}

7 0
3 years ago
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