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zaharov [31]
4 years ago
13

Any help with 2 and 9 would be greatly appreciated. I need it ASAP if possible.

Physics
1 answer:
taurus [48]4 years ago
4 0

Here is for #2.

Answer:

She has a Velocity of 4.0

Explanation:

Δv = ΔM /m

So in our case is is Δ4.000 = Δ220 /55

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Is fire actually hot and why do we call it hot; is it a classification for when something burns you.
rodikova [14]
Yes it is classified as hot
6 0
4 years ago
How is a plant able to cycle matter through the processes of cellular respiration and photosynthesis?
MissTica

The carbon cycle refers to the processes by which carbon in the biosphere is recycled. Photosynthesis sucks carbon dioxide out of the atmosphere, while cellular respiration releases it into the environment. Photosynthesis is the process by which solar energy reaches a plant and is converted into glucose.

<u>How photosynthesis and cellular respiration are similar:</u>

<em>Photosynthesis</em> is a method by which plants and other organisms transform light energy into chemical energy, which is then released to fuel the organism's metabolic activities through<em> </em><em>cellular respiration.</em>

<em></em>

8 0
3 years ago
A hot-air balloon with a mass of 400 kilograms moves across the sky with 3,200 joules of kinetic energy. The velocity of the bal
kotegsom [21]

Answer:

4 m/s

Explanation:

KE =

Velocity of balloon will be 4 m/s.

!! Hope It Helps !!

4 0
4 years ago
Which of the following affects the speed of a seismic wave?
NemiM [27]

Answer:

The answer is B.  composition

Explanation:

  • The speed of a seismic wave is governed by three interrelated factors, viz. the composition of the rock, pressure, and temperature.
  • Seismic waves travel at different speeds in different mediums.
  • This property of the seismic waves tends it to change the speed where the concentration of minerals in the rocks varies.
  • Other than that, the increasing temperature beneath the Earth's surface decreases the speed of the seismic waves, and the speed increases with increasing pressure as the waves go penetrating deep down into the Earth's interiors.
5 0
3 years ago
an object of mass 8 kg is whriled round in a vertical circle of radius 2m with a constant speed of 6m/s .Then the maximum and mi
algol13

Answer:

Maximum Tension=224N

Minimum tension= 64N

Explanation:

Given

mass =8 kg

constant speed = 6m/s .

g=10m/s^2

Maximum Tension= [(mv^2/ r) + (mg)]

Minimum tension= [(mv^2/ r) - (mg)]

Then substitute the values,

Maximum Tension= [8 × 6^2)/2 +(8×9.8)] = 224N

Minimum tension= [8 × 6^2)/2 -(8×9.8)]

=64N

Hence, Minimum tension and maximum Tension are =64N and 2224N respectively

5 0
3 years ago
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