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2 years ago

The graph represents the reaction 2H20+ 02 2H2O2 as it reaches

Physics

1 answer:

Phantasy [73]2 years ago

3 0

Answer:

C. at point 2 the concentrations of H20...O2... & H2 are all changing

toward their equilibrium concentrations

D. at point 1 more reactants are converted to products than

products are converted to reactants

Explanation:

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While on a weekend trip to New York Cily. You So! Angelina

liubo4ka [24]

Answer:

429.3 m

Explanation:

Speed=Distance÷Time

⇒Speed×Time=Distance

In this case,

Distance=27×15.9

=429.3m

Hope it helps.

6 0

4 years ago

A pendulum built from a steel sphere with radius r cm 5 and density stl kg m S 3 7800 is attached to an aluminum bar with length

Ad libitum [116K]

Answer:

a) I = 0.0198 kg m² , b) I = 21.85 kg m²

Explanation:

For this exercise we will use the definition of moment of inertia

I = ∫ r² dm

For body with high symmetry they are tabulated

sphere I = 2/5 m r²

bar with respect to center of mass I = 1/12 m L²

let's calculate the mass of each body

bar

ρ = m / V

m = ρ V

m = ρ l w h

where we are given the density of the bar rho = 32840 kg / m³ and its dimensions 1 m, 0.8 cm and 4 cm

m = 32820 1 0.008 0.04

m = 10.5 kg

Sphere

M = ρ V

V = 4/3 pi r³

M = rgo 4/3 π r³

give us the density 37800 kg / m³ and the radius of 5 cm

M = 37800 4/3 π 0.05³

M = 19.8 kg

a) asks us for the moment of inertia of the sphere with respect to its center of mass

I = 2/5 M r²

I = 2/5 19.8 0.05²

I = 0.0198 kg m²

b) the moment of inertia with respect to the turning point, for this we will use the theorem of parallel axes

I = I_cm + M d2

where d is the distance from the body to the point of interest

I_cm = 0.0198 kg m²

the distance to the pivot point is

l = length of the bar + radius of the sphere

l = 1 + 0.05 = 1.005 m

I = 0.0198 + 19.8 1.05²

I = 21.85 kg m²

8 0

3 years ago

Lena is studying the properties of light in a laboratory. If she increases the amplitude of the light waves she is studying, wha

zaharov [31]

Answer:

A brighter light

Explanation:

Light waves travel through space via light particles called photons. This particles have in essence 2 properties: 1. Amplitude and 2.Frequency. The first one has to do with the intensity of light we see and the second one has to do with the energy (color). If we change only the amplitude, we will see a lighter or darker light and will keep the same color in all amplitude changes. But if we modify the frequency, the intensity will keep the same and the color changes as we move into the light spectrum.

Thus, increasing the amplitude, we will perceive a brigher light.

4 0

3 years ago

Bro why cant I post this T-T

Leni [432]

Answer: 12.0 m/s^2

Explanation:

Let $\alpha$ be the angular acceleration of the end of the rod

Taking torque about the link, we have:

$\tau = W \times OM\\ or\\ \tau = mg\times \left(\dfrac{L}{2}\right)\sin 55^\circ ....(i)$

Torque is also given in terms of moment of inertia of the rod and its angular acceleration i.e.

$\tau = I_{rod}\ \alpha......(ii)$

From equations (i) and (ii) we have:

$mg\times \left(\frac{L}{2}\right)\sin 55^\circ = \left(\frac{mL^2}{3}\right)\alpha\ \ \ \ \ \ \ (\because I_{rod} = \dfrac{mL^2}{3}) \\ \\ \alpha = \left(\frac{3g}{2L}\right)\sin 55^\circ\\ \\ \alpha = \left(\frac{3\times 9.8}{2\times 2.4}\right)\sin 55^\circ\\ \\ \boxed{\alpha = 5.02\ rad/s^2} }$

The acceleration of the end of the rod farthest from the link is given by:

$a = L\alpha\\ \\ a = (2.4\ m)(5.02\ rad/s^2)\\ \\ \boxed{a = 12.0\ m/s^2}$

7 0

2 years ago

What human process are carbon sources that are upsetting the balance between CO to update via planets and CO2 released by living

Serhud [2]

The combustion of fossil fuels is releasing more co2 into the atmosphere then what would occur naturally

5 0

3 years ago