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arlik [135]
2 years ago
8

What system carries food to cells though the blood ?

Physics
1 answer:
irinina [24]2 years ago
5 0
"Circulatory system" does that, as all about transportation of blood within the body comes under it's work

Hope this helps!
You might be interested in
the 200 g baseball has a horizontal velocity of 30 m/s when it is struck by the bat, B, weighing 900 g, moving at 47 m/s. during
Ivanshal [37]

Solution :

Given :

Mass of the baseball, m = 200 g

Velocity of the baseball, u = -30 m/s

Mass of the baseball after struck by the bat, M = 900 g

Velocity of the baseball after struck by the bat, v = 47 m/s

According to the conservation of momentum,

Mv+mu=Mv_1+mv_2

(900 x 47) + (200 x -30)  = (900 x v_1) + (200 x v_2)

36300 =  (900 x v_1) + (200 x v_2)

9v_1 + 2v_2 = 363 ..............(i)

9v_1 = 363 - 2v_2

v_1=\frac{363 - 2v_2}{9}

The mathematical expression for the conservation of kinetic energy is

\frac{1}{2}Mv^2+\frac{1}{2}mu^2 = \frac{1}{2}Mv_1^2+\frac{1}{2}mv_2^2

\frac{1}{2}(900)(47)^2+\frac{1}{2}(200)(-30)^2 = \frac{1}{2}(900)v_1^2+\frac{1}{2}(200)v_2^2    ................(ii)

$(9)(14)^2+(2)(-30)^2 = (9)v_1^2+2v_2^2$  

21681 = 9v_1^2+2v_2^2

Substituting (i) in (ii)

21681= 9\left( \frac{363-2v_2}{9}\right)^2+2v_2^2

(363-2v_2)^2+18v_2^2=195129

(363)^2+18v_2^2-2(363)(2v_2)+(363)^2-195129=0

22v_2^2-145v_2-63360=0

Solving the equation, we get

v_2=96 \ m/s, -30 \ m/s

The negative velocity is neglected.

Therefore, substituting 96 m/s for v_2 in (i), we get

v_1=\frac{363-(2 \times 96)}{9}

     = 19

Thus, only impulse of importance is used to find final velocity.

8 0
3 years ago
A real power supply can be modeled as an ideal EMF of 60 Volts in series with an internal resistance. The voltage across the ter
lara31 [8.8K]

Answer:

5 ohms

Explanation:

Given:

EMF of the ideal battery (E) = 60 V

Voltage across the terminals of the battery (V) = 40 V

Current across the terminals (I) = 4 A

Let the internal resistance be 'r'.

Now, we know that, the voltage drop in the battery is given as:

V_d=Ir

Therefore, the voltage across the terminals of the battery is given as:

V= E-V_d\\\\V=E-Ir

Now, rewriting in terms of 'r', we get:

Ir=E-V\\\\r=\frac{E-V}{I}

Plug in the given values and solve for 'r'. This gives,

r=\frac{60-40}{4}\\\\r=\frac{20}{4}\\\\r=5\ ohms

Therefore, the internal resistance of the battery is 5 ohms.

5 0
3 years ago
Which is the force that slows moving things down?
BlackZzzverrR [31]

i think centripetal Force

7 0
3 years ago
Read 2 more answers
Please help me! I don’t understand how to solve this problem.
skelet666 [1.2K]

What's the weight of the pear ?

Weight = (mass) x (gravity) = (1 kg) x (9.8 m/s²) = 9.8 Newtons.

OK. We know there's a force of 9.8 Newtons acting downwards on the pear.

Is the pear accelerating ? No ! It's just laying there on the table.

If it's not accelerating, then we know that the net force on it must be zero.

So there must be ANOTHER force acting UPWARDS on it, to exactly

cancel out the downward force of its weight. THAT's the "normal" force ...

the upward force that the table exerts on the pear. It must also be 9.8N,

but UPwards, so that if you add it to the weight, the sum is zero.

6 0
3 years ago
Electric current comes from the movement or flow of____ charged
Ivahew [28]

Answer:

negatively ,

That all I can help you.

7 0
2 years ago
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