13 days ago

Nanotechnology and microtechnology devices are both very tiny. However, one property of nanotechnology distinguishes it from mic

rotechnology. What is this unique property? Nanotechnology can create new products. Nanotechnology is not affected by gravity. Nanotechnology travels at the speed of light if needed. Nanotechnology can display wave-particle duality.

Physics

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A fire hose held near the ground shoots water at a speed of 6.5 m/s. At what angle(s) should the nozzle point in order that the

inna [3103]

The velocity of water can be decomposed into its vertical and horizontal components:
$v_x = 6.5 cos \theta \\ v_y = 6.5 sin \theta$

The vertical component will exhibit a parabolic trajectory due to gravity, while the horizontal component will be linear:
$y(t) = -4.9t^2 + (6.5sin \theta) t \\ \\ x(t) = (6.5 cos \theta) t$
To determine when the water reaches the ground 2.5m away, set y= 0 and x = 2.5
$-4.9t^2 + (6.5sin \theta) t=0 \\ \\ t = \frac{6.5}{4.9} sin \theta \\ \\(6.5 cos \theta)(\frac{6.5}{4.9} sin \theta) = 2.5 \\ \\ sin \theta cos \theta = 0.29 \\ \\ sin 2\theta = 0.58 \\ \\ 2\theta = 35.4, 144.6 \\ \\ \theta = 17.7,72.3$

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3 months ago

9. A 2 liter bottle of Coke weighs about 2 kilograms. If that bottle were combined with an equal amount of anti-Coke, how many J

Maru [3345]

Answer:

The energy expected to be released is calculated to be 4182 Joules.

Explanation:

The total mass of coke is 2 kg, which is equivalent to 2000 g

1 calorie per gram corresponds to 4.184 Joules of energy

4.184 J/gC * 2000g results in 8368 J

1 food calorie approximates to 4186 J

By subtracting, we find 8368 - 4186

Hence, the total energy that will be released amounts to 4182 Joules.

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3 months ago