What is a disadvantage of using biomass as an energy resource?

Consider a hot air balloon rising vertically from a launch site located on the ground. A person is initially standing 10 m from

abruzzese [7]

Answer:

The distance between the person and the balloon after 2 seconds the person starts walking is changing on 4.47 m/s

Explanation:

The relative position between the balloon and the person is found using Galileo's relativity principle:

$\overrightarrow{r_{b/p}}=\overrightarrow{r_{b}}+\overrightarrow{r_{p}}$ (1)

with Rb the position of the balloon and Rp the position of the person respect with the origin (See Figure 1). Because we don’t have those positions but we know the constant velocities, we can relate the positions (R) with the velocities (v) with the kinematic equation:

$\overrightarrow{R}=\overrightarrow{v}*t$ (2)

So equation (1) is:

$\overrightarrow{R_{b/p}}=\overrightarrow{v_{b}*t}+\overrightarrow{R_{p}}=(v_{b}*t)\,\hat{j}-R_{p\,}\hat{i}$ (3)

with $\hat{j}$ and $\hat{i}$ the unitary vectors on y and x direction respectively.

We see from our initial condition (See figure 2) that:

$R_{p}=(10-v_{p}*t)$ (4)

So if we put this on (3) and divide by time we have:

$\frac{\overrightarrow{R_{b/p}}}{t}=\overrightarrow{v_{b/p}}=\frac{(v_{b}*\cancel{t})}{\cancel{t}}\,\hat{j}-\frac{(10-v_{p}*t)}{t}\hat{i}$ (5)

But we are interested in how fast a distance is changing, and that is a speed so:

$v_{b/p}=\sqrt{v_{b}^{2}+\left(\frac{(10-(v_{p}*t))}{t}\right)^{2}}=\sqrt{4^{2}+\left(\frac{(10-(3*2))}{2}\right)^{2}}\simeq4.47\,\frac{m}{s}$

3 0

3 years ago

A rocket initially at rest accelerates at a rate of 99.0 meters/second ^2.Calculate the distance covered by the rocket if it. At

Pani-rosa [81]

The distance covered is 1000 m

Explanation:

The rocket is moving by uniformly accelerated motion, so we can find the distance it covers by using the following suvat equation:

$s=vt-\frac{1}{2}at^2$

where

s is the distance covered

v is the final velocity

t is the time

a is the acceleration

For the rocket in this problem, we have:

v = 445 m/s is the final velocity

$a=99.0 m/s^2$ is the acceleration

t = 4.50 s is the time

Substituting, we find the distance covered:

$s=(445)(4.50)-\frac{1}{2}(99.0)(4.50)^2=1000 m$

Learn more about accelerated motion:

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brainly.com/question/11181826

brainly.com/question/2506873

brainly.com/question/2562700

#LearnwithBrainly

8 0

4 years ago

The activation energy for the isomerization reaction of CH3NC in Problem 14 is 161 kJ mol 1, and the reaction rate constant at 6

astraxan [27]

Answer:

Explanation:

Below is an attachment containing the solution to the question.

5 0

3 years ago

In the analogy for how a wave travels along a line of dominoes standing on end, each domino represents___________.

Alex777 [14]

Answer:

im 99% sure its initial disturbance

Explanation:

6 0

3 years ago

In a series RLC ac circuit, a second resistor is connected in series with the resistor previously in the circuit. As a result of

AnnyKZ [126]

Answer:

* The first thing we observe is that the frequency response does not change

* The current that circulates in the circuit decreases due to the new resistance at the resonance point,

Z = R + R₂

Explanation:

The impedance of a series circuit is

Z₀² = R² + (X_L-X_C) ²

when we place another resistor in series the initial resistance impedance changes to

Z² = (R + R₂) ² + (X_L - X_C) ²

let's analyze this expression

* The first thing we observe is that the frequency response does not change

* The current that circulates in the circuit decreases due to the new resistance at the resonance point,

Z = R + R₂

8 0

3 years ago