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Lyrx [107]
2 years ago
11

•Accordingto the graph, how many dark-colored moths existed in year 8?

Physics
2 answers:
Sunny_sXe [5.5K]2 years ago
6 0
Thw answer is letter a
ch4aika [34]2 years ago
4 0

Answer: Approximately 600

So your answer is C.

Explanation:

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A space vehicle is traveling at 2980 km/h relative to Earth when the exhausted rocket motor is disengaged and sent backward. The
Strike441 [17]

Answer:

3054.4 km/h

Explanation:

Using the conservation of momentum

momentum before separation = 5M × 2980 Km/h where M represent the mass of the module while 4 M represent the mass of the motor

initial momentum = 14900 M km/h

let v be the new speed of the motor so that the

new momentum = 4Mv and the new momentum of the module  = M ( v + 94 km/h )

total momentum = 4Mv + Mv + 93 M = 5 Mv + 93M

initial momentum = final momentum

14900 M km/h = 5 Mv + 93M

14900 km/h = 5v + 93

14900 - 93 = 5v

v = 2961.4 km/h

the speed of the module = 2961.4 + 93 = 3054.4 km/h

8 0
3 years ago
A physical change is a change to the physical properties of a substance. This type of change does
LiRa [457]

Answer:

False

Explanation:

5 0
3 years ago
An experimental tungsten light bulb filament has a length of 5 cm and a diameter of 0.074 cm. The filament is basically just a w
adell [148]

Answer:

power emitted is 1.75 W

Explanation:

given data

length l = 5 cm = 5 ×10^{-2} m

diameter d = 0.074 cm = 74 ×10^{-5} m

total filament emissivity = 0.300

temperature = 3068 K

to find out

power emitted

solution

we find first area that is π×d×L

area = π×d×L

area = π×74 ×10^{-5}×5 ×10^{-2}

area = 1162.3892  ×10^{-5} m²

so here power emitted  is express as

power emitted  = E × σ × area × (temperature)^4

put here all value

power emitted  = 0.300× 5.67 × 1162.3892  ×10^{-5}  × (3068)^4

power emitted = 1.75 W

5 0
3 years ago
Jane is sliding down a slide. What kind of motion is she demonstrating?
Over [174]
When Jane is sliding down a slide, she is demonstrating translational motion. 
5 0
3 years ago
Having more ______________ will make a material a better conductor.
Tasya [4]
I believe the answer is free electrons
6 0
3 years ago
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