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Sliva [168]
3 years ago
9

Chemical reactions may occur quickly or slowly true or false

Physics
1 answer:
lora16 [44]3 years ago
8 0
The answer is true!!
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A 730-N man stands in the middle of a frozen pond of radius 5.0 m. He is unable to get to the other side because of a lack of fr
STatiana [176]

Answer:62.11 s

Explanation:

Given

weight of man =730 N

mass of man m_1=\frac{730}{9.8}=74.48 kg

radius of pound r=5 m

mass of book m_2=1.2 kg

velocity of book v_2=5 m/s

let v_1 be the velocity of man

conserving momentum

0=m_1v_1+m_2v_2

0=74.48\times v_1+1.2\times 5

v_1=\frac{6}{74.48}=0.0805 m/s

time taken by man to reach south end

t=\frac{5}{0.0805}=62.11 s

5 0
4 years ago
All of the planets stay near the ecliptic as they move on the Celestial Sphere
stellarik [79]

Answer:

True

Explanation:

As the Earth goes around the Sun, it will appear that Earth is stationary and Sun is going around it. One can observe the same in real life as well. This apparent path followed by the Sun is called Ecliptic. The plane consisting Ecliptic is called as Ecliptic plane which is same as the orbital plane of Earth.

All the planets of the Solar system are also going around the Sun. Their orbital plane has negligible tilt with respect to Ecliptic plane. Due to this the planets will always appear near to the Ecliptic as they move on the celestial sphere.

3 0
3 years ago
In one hour Earth receives enough solar energy to meet the energy needs of the world for
erastova [34]
I have read that it is enough energy to power the needs of civilization for an entire year.
3 0
3 years ago
The heating of groundwater forms
KIM [24]
The appropriate answer is c. geysers. A geysers a hot water fountain that spouts intermittently with great force, frequently accompanied by a thunderous roar. The world famous Old Faithful is located in Yellowstone National Park. This geyser erupts every 65 min sending a jet of water almost 60 meters into the air. Sinkholes and caves are formed by the action of groundwater on carbonate rocks which causes them to colapse and former these structures.
6 0
3 years ago
Read 2 more answers
1. A car’s velocity increases from 4.0 m/s to 36 m/s over a 4.0 second time interval. What is its average acceleration?
Finger [1]

Explanation:

36-4/4= 9 m/squared. meter per squared.

acceleration unit is meter per second Square.equation is velocity by time.for average final(36) minus initial(4)

7 0
3 years ago
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