3 years ago

Which blood vessels carry oxygen and nutrients directly to the individual cells in tissues and organs?

Physics

2 answers:

dusya [7]3 years ago

7 0

The first one would be C) Capillaries. I'm not sure about the second one, though
xx

Firlakuza [10]3 years ago

6 0

Answer:

The first one is C and the second one is D.

Explanation:

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Refer to the image. Calculate the magnitude of change in velocity of the cue ball.

valkas [14]

Answer:

If you add the 2 velocity vectors you get the velocity of the third vector which is the (change in) velocity of the cue ball after striking the cushion

V * 2 * cos 45 = 4 * cos 45 = 2.83 m/s

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2 years ago

A 62.6-kg skateboarder starts out with a speed of 2.18 m/s. He does 113 J of work on himself by pushing with his feet against th

n200080 [17]

Answer:

a. Wgra=786.09J

b. 1.28m

Explanation:

The change in the potential energy is the work done by the gravitational force.

For this problem you have to take into account that the total work done is given by the change in the kinetic energy

$W_{tot}=\Delta E_k=\frac{m}{2}(v_f^2-v_0^2)\\W_{tot}=\frac{62.6kg}{2}((6.55\frac{m}{s})^2-(2.18\frac{m}{s})^2)=1194.09J$

Furthermore the total work is the contribution of the work done by the skater, the gravitational force and the friction

$W_{tot}=W_{ska}+W_{fric}+W_{gra}$

(a) by separating Wfric you have

$W_{gra}=W_{tot}-W_{fric}-W_{ska}=1194.09J-295J-113J=786.09J$

(b) It is only necessary to use the expression for the work done by gravitational force

$W_{grav}=mgh\\h=\frac{W_{grav}}{mg}=\frac{786.09J}{(62.6kg)(9.8\frac{m}{s^2})}=1.28m$

HOPE THIS HELPS!!

6 0

3 years ago

Scientists have invented the equipment to harness the power of lighting for energy use. True or false

____ [38]

I think it’s false .
Let me know if it’s incorrect .

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3 years ago

Two vectors have magnitudes 20 m and 44 m. Which of the following cannot possibly be the magnitude of the resultant of the two v

Volgvan

Answer:

44M 64M

Explanation:

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3 years ago

Where the hanging wall moves down relative to the footwall, it is an _____________fault

devlian [24]

Tension reverse is the correct answer. im not so sure

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7 0

3 years ago

Read 2 more answers