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3 years ago

WILL GIVE BRAINLIEST!!!!!

Physics

2 answers:

arsen [322]3 years ago

8 0

I believe it is A,
a female carrier of the disease.

Hope this helps :)

SOVA2 [1]3 years ago

6 0

Answer:

the answer is letter c.

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Newton's law of cooling says that the rate of cooling of an object is proportional to the difference between the temperature of

Feliz [49]

Answer:

$T=T_o+C'e^{-kt}$

Explanation:

Newton's law of cooling

Rate of cooling

$\dfrac{dT}{dt}\alpha(T-T_o)$

Where To is the surrounding temperature

T is object temperature at any time t

now by removing proportionality sign

$\dfrac{dT}{dt}=-k(T-T_o)$

Now by separating variables

$\dfrac{dT}{(T-T_o)}=-k\ dt$

$\int \dfrac{dT}{(T-T_o)}=-\int k\ dt$

$\ln (T-T_o)=- k\ t +C$

Where C is constant

$T=T_o+C'e^{-kt}$

C' is also a constant and it can be find by using boundary conditions.

4 0

3 years ago

Which of the following is an example of the law of conversion of energy

ruslelena [56]

Is there a picture so I can help you

8 0

3 years ago

A 70.0 kg sprinter starts a race with an acceleration of 2.00 m/s2. If the sprinter accelerates at that rate for 29 m, and then

andrey2020 [161]

Answer:

t = 12.82s

Explanation:

F = m×a

= (70)×(2)

= 140 N

during the acceleration, the sprinter cover d = 29 m with time:

d = 1/2×at

29 = 1/2×(2)×t^2

t^2 = 29s

t = 5.39s

and attains the velocity of:

v = a×t

= 2×5.39

= 10.77 m/s

Then,to cover the last x = 80 m with a speed of 10.77 m/s in time:

t = x/v

= 80/10.77

= 7.43s

Therefore, it will take the sprinter 7.43 + 5.39 = 12.82s

6 0

3 years ago

Plot StartRoot 1.5 EndRoot and StartRoot 1.9 EndRoot on the number line to find which inequalities are true. Check all that appl

Vera_Pavlovna [14]

Answer:

A, B, C, E

Explanation:

now gimme thanks please

4 0

3 years ago

Read 2 more answers

Football player 1 has a mass of 80 kg and a velocity of 2 m/s east while player 2 has a mass of 70 kg and a velocity of 3 m/s we

sukhopar [10]

The total momentum of the system is equal to 50 Kgm/s.

Given the following data:

Mass 1 = 80 kg

Velocity 1 = 2 m/s east.

Mass 2 = 70 kg

Velocity 2 = 3 m/s west.

To determine the total momentum of the system:

Mathematically, momentum is given by the formula;

$Momentum = mass \times velocity$

For Football player 1:

$Momentum = 80 \times 2$

Momentum 1 = 160 Kgm/s.

For Football player 2:

$Momentum = 70 \times 3$

Momentum 1 = 210 Kgm/s.

Now, we can calculate the total momentum of the system:

$Total\;momentum = momentum \;2 - momentum \;1\\\\Total\;momentum = 210-160$

Total momentum = 50 Kgm/s.

Note: We subtracted because the football players were moving in opposite directions.

6 0

3 years ago