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3 years ago

True or False The brachial artery is located in the lateral wrist, just proximal to the thumb?

Physics

2 answers:

Vesna [10]3 years ago

8 0

The answer is false....

wel3 years ago

7 0

It is false. it is near the elbow

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You stand on a bridge above a river and drop a rock into the water below from a height of 25 m. (Assume no air resistance)

Ilia_Sergeevich [38]

PART a)

here when stone is dropped there is only gravitational force on it

so its acceleration is only due to gravity

so we will have

$a = g = 9.8 m/s^2$

Part b)

Now from kinematics equation we will have

$y = v_i t + \frac{1}{2} at^2$

now we have

y = 25 m

so from above equation

$25 = 0 + \frac{1}{2}(9.8 )t^2$

$t = 2.26 s$

Part c)

If we throw the rock horizontally by speed 20 m/s

then in this case there is no change in the vertical velocity

so it will take same time to reach the water surface as it took initially

So t = 2.26 s

Part D)

Initial speed = 20 m/s

angle of projection = 65 degree

now we have

$v_x = vcos\theta$

$v_x = 20 cos65 = 8.45 m/s$

$v_y = vsin\theta$

$v_y = 20 sin65 = 18.13 m/s$

PART E)

when stone will reach to maximum height then we know that its final speed in y direction becomes zero

so here we can use kinematics in Y direction

$v_f - v_y = at$

$0 - 18.13 = (-9.8) t$

$t = 1.85 s$

so it will take 1.85 s to reach the top

5 0

3 years ago

A large turntable with radius 6.00 m rotates about a fixed vertical axis, making one revolution in 8.00 s. The moment of inertia

yanalaym [24]

Answer:

0.8024

Explanation:

From the given question; we can say that the angular momentum of the system is conserved if the net torque is is zero.

So; $I_o \omega _o = I_2 \omega_2$

At the closest distance ; the friction is :

$f_s = \mu_s (mg)$

According to Newton's Law:

F = ma

F = mrω²

From conservation of momentum:

$I_o \omega _o = I_2 \omega_2$

$\omega_2= \frac { I_o \omega _o}{ I_2 }$

$\omega_2=( \frac { I_1+ mr_o^2}{ I_1 + mr^2 })* \omega_o$

However ; since the static friction is producing the centripetal force :

$\mu_s (mg) = mr \omega_2^2$

$\mu _s = \frac{ \omega^2_2 *r }{g}$

The coefficient of static friction between the bottoms of your feet and the surface of the turntable can now be calculated by using the formula :

$\mu _s = \frac{ \omega^2_2 *r }{g}$

= $( \frac { I_1+ mr_o^2}{ I_1 + mr^2 })^2 * \frac{ \omega^2_o *r }{g}$

= $[\frac{1200+(73(6)^2)}{((1200)+(73)(3)^2)} ]^2*[\frac{(\frac{\pi}{4})^2(3)} {9.8}]$

= 0.8024

4 0

3 years ago

While traveling home at dusk, a motorcyclist gets on the highway and increases the combined mass (400 kg

alexdok [17]

The acceleration of one of those bugs is equal to 305mi/s.

<h3>Acceleration calculation</h3>

To calculate the insect's acceleration, the action and reaction force of the impact must be considered.

As the insect will hit the helmet, the force it hits is the same force it receives, so we can make the following expression:

$m_m \times a_m = m_b \times a_b$

$550 \times 0.0027 = 5 \times 10^{-3} \times a_b$

<em>Speed has been converted to miles per second</em>

$a_b = 305 mi/s$

So, the acceleration of one of those bugs is equal to 305mi/s.

Learn more about acceleration calculation: brainly.com/question/390784

8 0

2 years ago

PLEASE HELP ASAP

Kisachek [45]

Answer:

has more energy, has a greater amplitude, has a higher frequency

Explanation:

7 0

3 years ago

Read 2 more answers

A hydrogen atom and a carbon atom move at the same speed. Which has the greater kinetic energy?

koban [17]

Answer:

The carbon atom has greater kinetic energy than a hydrogen atom.

Hope this helps! :)

6 0

3 years ago