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3 years ago

To calculate the dashed orbits from the stellar positions, astronomers had to assume that __________.

1 answer:

3 0

Here is the answer that would best complete the given statement above. To calculate the dashed orbits from the stellar positions, astronomers had to assume that <span>if they observed for many more years, the dots would trace out ellipses. Hope this is the answer that you are looking for. </span>

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A college dorm room measures 14 ft wide by 13 ft long by 6 ft high. What is the air in it under normal conditions?

kirza4 [7]

Complete question:

A college dormitory room measures 14 ft wide by 13 ft long by 6 ft high. Weight density of air is 0.07 lbs/ft3. What is the weight of air in it under normal conditions?

Answer:

the weight of the air is 76.44 lbs

Explanation:

Given;

dimension of the dormitory, = 14 ft by 13 ft by 6 ft

density of the air, = 0.07 lbs/ft³

The volume of the air in the dormitory room = 14 ft x 13 ft x 6 ft

= 1092 ft³

The weight of the air = density x volume

= 0.07 lbs/ft³ x 1092 ft³

= 76.44 lbs

Therefore, the weight of the air is 76.44 lbs

6 0

2 years ago

TRUE OR FALSE- Doing sports activities as your Cardio Training can be just as effective or more effective than running on a trea

vivado [14]

its true

dsdfsddsfsdfdsg

6 0

2 years ago

It has been suggested that a heat engine could be developed that made use of the fact that the temperature several hundred meter

lesantik [10]

Answer:

efficiency = 5.4%

Explanation:

Efficiency of heat engine is given as

$\eta = \frac{W}{Q_{in}}$

now we will have

$W = Q_1 - Q_2$

so we will have

$\eta = 1 - \frac{Q_2}{Q_1}$

now we know that

$\frac{Q_2}{Q_1} = \frac{T_2}{T_1}$

so we have

$\eta = 1 - \frac{T_2}{T_1}$

$\eta = 1 - \frac{273+6}{273+22}$

$\eta = 0.054$

so efficiency is 5.4%

8 0

3 years ago

What is sin for the given right triangle?

Rzqust [24]

Sin of a right triangle is opposite divided by hypotenuse
in this case, that is 5/8.6 = 0.581395349<span>
</span>
you can easily remember the trig functions with this acronym:
SOH-CAH-TOA

S: Sine
O: Opposite
H: Hypotenuse

C: Cosine
A: Adjacent
H: Hypotenuse

T: Tangent
O: Opposite
A: Adjacent

5 0

2 years ago

What is the definition of

marysya [2.9K]

Upper fixed point is a temperature of stem from water boiling and standards atmospheric pressure

Lower fixed point is the temperature of pure melting ice.

8 0

3 years ago