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4 years ago

Interrelationship between health population and environment education and Science and Technology

Physics

1 answer:

S_A_V [24]4 years ago

8 0

Answer:

Answer: Science and technology are relatively modern developments. For most of the past 50,000 years of civilization, there was religion, dogma, ritual an tradition. These kept civilization safe but prevented growth.

After the modern scientific method was developed during the Rennaisance, civil action took off.

Health, as expressed as life expectancies, has increased massively. Population growth has increased to levels thought impossible before. But yes, the environment has suffered.

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A one-kilogram plate on a shelf has 19.6 J of potential energy. If the plate falls from the shelf, what will its maximum velocit

8_murik_8 [283]

(1/2) m v^2 = 19.6
.5 * 1 * v^2 = 19.6

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3 years ago

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If a person uses about 4 calories to fuel a minute of walking, and it takes about 20 minutes to walk a mile, approximately how m

Lemur [1.5K]

Answer:

43.75 miles must a person walk to utilize the energy in (“burn”) a pound of fat.

Explanation:

3,500 calories are present in 1 pound of the fat.

Thus, given that:

4 calories are burnt in 1 minute of walking.

So,

1 calories are burnt in 1/4 minute of walking.

Or,

1 calories are burnt in 0.25 minute of walking.

Thus,

3500 calories are burnt in 0.25*3500 minutes of walking

Minutes of walking needed to burn 3500 calories = 875 minutes.

Also, given that:

20 minutes of walking covers 1 mile.

1 minute of walking covers 1/20 mile.

So,

875 minutes of walking covers (1/20)*875 mile.

43.75 miles must a person walk to utilize the energy in (“burn”) a pound of fat.

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3 years ago

two denominational motion is not always projectile motion. in two denominational motion that is not a projectile motion, _______

irga5000 [103]

Answer:

a projectile is an object upon which the only force is gravity. Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity.

Explanation:

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4 years ago

How does the mass-energy equation e = mc2 relate to fission

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It relates because the energy of an object to its mass and since fission requires energy to do so, e=mc^2 relates to it.

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4 years ago

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1. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.30 m?

aivan3 [116]

Answer:

1. v = 30 m/s

2. v = 5 m/s

3. f = 40 Hz

4. f = 400 Hz

5. f = 300 Hz

6. λ = 0.772 m

7. λ = 0.386 m

8. λ = 0.625 m

9. v = 100 m/s

10. v = 50 m/s

Explanation:

The relationship between frequency, wavelength, and speed of a wave is given by the following formula:

$v = f\lambda$

where,

v = speed of wave

f = frequency of wave

λ = wavelength

f = 100 Hz

λ = 0.3 m

Therefore,

v = (100 Hz)(0.3 m)

v = 30 m/s

f = 50 Hz

λ = 0.1 m

v = (50 Hz)(0.1 m)

v = 5 m/s

v = 20 m/s

λ = 0.5 m

$f = \frac{v}{\lambda} = \frac{20\ m/s}{0.5\ m}$

f = 40 Hz

v = 80 m/s

λ = 0.2 m

$f = \frac{v}{\lambda}=\frac{80\ m/s}{0.2\ m}$

f = 400 Hz

v = 120 m/s

λ = 0.4 m

$f = \frac{v}{\lambda}=\frac{120\ m/s}{0.4\ m}$

f = 300 Hz

v = 340 m/s

f = 440 Hz

$\lambda = \frac{v}{f}=\frac{340\ m/s}{440\ Hz}\\$

λ = 0.772 m

v = 340 m/s

f = 880 Hz

$\lambda = \frac{v}{f}=\frac{340\ m/s}{880\ Hz}\\$

λ = 0.386 m

v = 250 m/s

f = 400 Hz

$\lambda = \frac{v}{f}=\frac{250\ m/s}{400\ Hz}\\$

λ = 0.625 m

f = 50 Hz

λ = 2 m

v = (50 Hz)(2 m)

v = 100 m/s

10.

f = 100 Hz

λ = 0.5 m

v = (100 Hz)(0.5 m)

v = 50 m/s

6 0

3 years ago

Interrelationship between health population and environment education and Science and Technology​

Interrelationship between health population and environment education and Science and Technology