3 years ago

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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The picture shows a device used to produce

lesya [120]

It would be wind energy

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3 years ago

A weightlifter curls a 30 kg bar, raising it each time a distance of 0.50 m .How many times must he repeat this exercise to burn

ludmilkaskok [199]

Answer:

$N = 2141 times$

Explanation:

Each time the work done to raise a given mass is

$W = mgh$

here we know that

$m = 30 kg$

$h = 0.50 m$

now we have

$W = (30 kg)(9.81 m/s^2)(0.50)$

$W = 147.15 J$

since it is just 25% of actual energy consumed as we know its efficiency is 25%

so we have total energy consumed in this way

$E_{total} = \frac{147.15}{0.25}$

$E_{total} = 588.6 J$

now if it took N number of times so burn the fat of a pizza then

$N(588.6) = 1260 \times 10^3$

$N = 2141 times$

4 0

3 years ago

What would people in Florida most likely do if a thunderstorm alert is sounded? They would prepare an emergency kit. They would

nydimaria [60]

Heyy,

I know the answer is They would postpone outdoor activities.

Hope this helpss!!

~Girlygir101~

3 0

3 years ago

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Which type of volcano has more predictable eruptions?

Ludmilka [50]

Shield volcanos have the most predictable eruptions.

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3 years ago

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When a mass rests on a surface, the surface "pushes up" on the object with a force that is equal in

Airida [17]

Answer: 294 N

Explanation:

Since the Normal Force $N$ is equal to the weight $W$ of the dog, we have:

$N=W=m.g$

Where:

$m=30 kg$ is the mass of the dog

$g=9.8 m/s^{2}$ is the acceleration due to gravity on the Earth's surface

Solving:

$N=W=(30 kg)(9.8 m/s^{2})$

$N=294 N$

8 0

3 years ago