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3 years ago

The __________ eventually becomes the muscles, skeleton, circulatory system, and other internal organs.

Physics

1 answer:

never [62]3 years ago

4 0

Answer:

Mesoderm.....

Explanation:

Endoderm becomes internal organ

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2075 Set A Q.No. 106 A Carnot engine has 40% efficiency with a sink at 10°C. By how many degrees should the temperature of the s

Anni [7]

Answer:

Explanation:

Efficiency of a Carnot engine = 1 – (T2/T1) ;

where T1 = source temperature and T2 = sink temperature

T2 = 10⁰C = 273+10 = 283K

The initial efficiency = 40%

So 0.4 = 1 - (283/Initial T1)

Initial T1 = 283/(1-0.4) = 471.67 K

To raise efficiency to 65%

0.65 = 1 - (283/Increased T1)

Increased T1 = 283/(1-0.65) = 808.57 K

The source temperature must be increased by 808.57 - 471.67 = 336.9 K or 336.9°C.

8 0

3 years ago

Read 2 more answers

3. Two spherical objects at the same altitude move with identical velocities and experience the same drag force at a time t. If

Daniel [21]

Answer:

Object 2 has the larger drag coefficient

Explanation:

The drag force, D, is given by the equation:

$D = 0.5 c \rho A v^2$

Object 1 has twice the diameter of object 2.

If $d_2 = d$

$d_1 = 2d$

Area of object 2, $A_2 = \frac{\pi d^2 }{4}$

Area of object 1:

$A_1 = \frac{\pi (2d)^2 }{4}\\A_1 = \pi d^2$

Since all other parameters are still the same except the drag coefficient:

For object 1:

$D = 0.5 c_1 \rho A_1 v^2\\D = 0.5 c_1 \rho (\pi d^2) v^2$

For object 2:

$D = 0.5 c_2 \rho A_2 v^2\\D = 0.5 c_2 \rho (\pi d^2/4) v^2$

Since the drag force for the two objects are the same:

$0.5 c_1 \rho (\pi d^2) v^2 = 0.5 c_2 \rho (\pi d^2/4) v^2\\4c_1 = c_2$

Obviously from the equation above, c₂ is larger than c₁, this means that object 2 has the larger drag coefficient

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3 years ago

Concave mirror ______the rays of light

Step2247 [10]

Answer: A concave mirror focuses rays of light

Explanation:

3 0

3 years ago

What is Otter's average velocity over his entire trip when it takes him 2 minutes to walk 100 meters north and another 1 minute

Leya [2.2K]

Answer:

0.50m/s

Explanation:

Average velocity is the change in displacement of a body with respect to time.

Velocity = ∆S/∆t

∆S = 100m - 70m

∆S = 30m

∆t = 2min - 1 min

∆t = 1min = 60secs

Substitute the given parameters into the formula for velocity

Velocity = 30m/60s

Velocity = 1/2 m/s

Average Velocity = 0.5m/s

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3 years ago

An airplane is flying at a constant speed in a positive direction. It slows down when it approaches the airport where it's going

olga nikolaevna [1]

(D) Negative acceleration (less and less speed)

7 0

4 years ago