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4 years ago

Where do cardiac muscles cause movement in? -bone -tendon -ligament -organ

Physics

2 answers:

faust18 [17]4 years ago

8 0

Answer:it the tendon

Explanation:

galina1969 [7]4 years ago

8 0

Answer: The answer would be bone... I mean organ

Explanation:

Look in the defenition In edunuity

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A glass is half-full of water, with a layer of vegetable oil (n 5 1.47) ﬂ oating on top. a ray of light traveling downward throu

leva [86]

The critical angle is the angle of incidence which gives 90 degrees refraction of light. If the incident angle is less than the critical angle, the ray of light will penetrate the second medium and if the incident angle is more than the critical angle, the ray will not penetrate and total internal reflection will occur.

So, to decide whether the ray will penetrate or not, we need to calculate the critical angle and compare it with the incident angle.

critical angle is calculated using the following rule:
critical angle = arcsin (n2 / n1) where
n1 is that of the oil = 1.47
n2 is that of the water = 1.33
therefore,
critical angle = arcsin (1.33 / 1.47) = 64.79 degree

Since the incident angle is greater than the critical angle, therefore the ray will not penetrate and will undergo total internal reflection.

6 0

4 years ago

Does anyone know how to do this pleaseeeee

anzhelika [568]

Answer:

See the answer below.

Explanation:

The latent heat of fusion is defined as the amount of energy needed to make a phase change from solid to liquid. And it can be calculated by means of the following expression:

$Q_{fusion}=m*Dh$

where:

Qfusion = Heat Energy [J]

m = mass = 0.65 [kg]

Dh = latent heat fusion = 330000[J/kg]

$Q_{fusion}=0.65*330000\\Q_{fusion}=214500[J]$

We know that energy can be calculated from power, where power is defined as the relationship between energy over time.

$P=E/t$

where:

P = power = 60 [w]

E = energy [J]

t = time = 5 [min] = 300 [s]

$E=P*t\\E=50*300\\E=15000[J]$

The mass change due to the process is equal to:

$m=282-274\\m=8[g]=0.008[kg]$

Now using the following equation for the latent heat of Fusion, we can calculate this value:

$Q=m*Dh\\Dh =Q/m\\Dh=15000/0.008\\Dh=1875000[J/kg]$

8 0

3 years ago

While you are studying for an upcoming physics exam, a lightning storm is brewing outside your window. Suddenly, you see a tree

vovikov84 [41]

Blahbsnansjsjsjsisisisisiskskssk

7 0

3 years ago

If<br> f(x) = 5x - 20<br> find f(y +2)

olga2289 [7]

Answer:

f(y)=2

Explanation:

5x/5-20/5

x=4

f(y+2)=4

-2 -2

f(y)=2

8 0

4 years ago

as an aid in understanding this problem. The drawing shows a positively charged particle entering a 0.61-T magnetic field. The p

miv72 [106K]

Answer:

E = 420.9 N/C

Explanation:

According to the given condition:

$Net\ Force = 2(Magnetic\ Force)\\Electric\ Force - Magnetic\ Force = 2(Magnetic\ Force)\\Electric\ Force = 3(Magnetic\ Force)\\qE = 3qvBSin\theta\\E = 3vBSin\theta$

where,

E = Magnitude of Electric Field = ?

v = speed of charge = 230 m/s

B = Magnitude of Magnetic Field = 0.61 T

θ = Angle between speed and magnetic field = 90°

Therefore,

$E = (3)(230\ m/s)(0.61\ T)Sin90^o$

3 0

3 years ago