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andriy [413]
3 years ago
10

Every living thing needs what to survive

Physics
2 answers:
oksano4ka [1.4K]3 years ago
5 0
Food water and shelter
uysha [10]3 years ago
5 0
Water

hope this helps :)
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As a block falls through the air by 40m it does work equal to 1800J. determine the mass of the block?​
Nookie1986 [14]

Answer:

4.5kg

Explanation:

Work(w)=force(m)×distance(d)

force = mass × acceleration(A)

W=1800J,Mass=m, A=10m/s^2(constant value),distance=40m

1800=m×10×40

1800=400m

divide both sides by 400

m=1800/400

m=4.5kg

8 0
3 years ago
What is your average velocity if you drive a distance of 113 km at a speed of 47 km/h, then the same distance at a speed of 66 k
Sauron [17]

Answer:

V_{avg}=54.90\ km/h

Explanation:

Given that

Drive 113 km at 47 km/h and another 113 km at 66 km/h.

When distance is same then average velocity can be found by using below formula:

V_{avg}=\dfrac{2V_1V_2}{V_1+V_2}

Here

V_1= 47\ km/h

V_2= 66\ km/h

Now by putting the values

V_{avg}=\dfrac{2V_1V_2}{V_1+V_2}

V_{avg}=\dfrac{2\times 47\times 66}{47+66}

So

V_{avg}=54.90\ km/h

8 0
4 years ago
Read 2 more answers
In which situation does the reactive force between two colliding objects cause a physical change? (1 point)
jarptica [38.1K]

Answer:

a baseball player swinging a bat and hitting a baseball, causing the bat to shatter

Explanation

took the test, hope it helps

8 0
3 years ago
Write two different unit in which mass is measured.​
inessss [21]

Answer:

kilograms and grams

Explanation:

kilograms is the stadard unit for mass according to the SI system.

Grams is another unit for mass.

5 0
3 years ago
An earthquake in San Francisco produces a wave with a period of 0.80 seconds and a wavelength of 40 m., How long will it take fo
gtnhenbr [62]

Answer:

A) 3.11 Hrs

Explanation:

Wave speed is given by the formula

Speed = \frac{wavelength}{Time\: period}

now we will have

speed = \frac{40}{0.80}

v = 50 m/s

now the time taken by the wave to move the distance 560 km is given as

t = \frac{distance}{speed}

t = \frac{560\times 10^3}{50}

t = 11200 s

t = 3.11 hours

4 0
3 years ago
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