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3 years ago

How do I solve this problem

Physics

1 answer:

PilotLPTM [1.2K]3 years ago

5 0

Answer:

it is light

Explanation:

the arrow that says light is on the glass it must be near from tungsten

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BIO EST The archerfish (genus Toxotes) preys on land-based insects inhabiting tree limbs above the water. It has the ability to

monitta

Answer:

The initial speed of the water droplets is approximately 14.904 meters per second.

Explanation:

We can describe the water jet from archerfish as part of parabolic motion, which consists of the superposition of two different motions. First, an horizontal motion at constant velocity and, second, a free fall motion. The maximum height is reached when vertical component of speed is zero. The equation of motion is described below:

$v^{2} = v_{o}^{2}\cdot \sin^{2} \theta + 2\cdot g \cdot (y-y_{o})$

Where:

$v_{o}$ - Initial speed of the water jet, measured in meters per second.

$v$ - Current speed of the water jet, measured in meters per second.

$g$ - Gravitational acceleration, measured in meters per square second.

$y_{o}$ - Initial height, measured in meters.

$y$ - Current height, measured in meters.

Now we clear the initial speed within equation:

$v_{o}^{2} =\frac{v^{2}-2\cdot g\cdot (y-y_{o})}{\sin^{2}\theta}$

$v_{o} = \sqrt{\frac{v^{2}-2\cdot g\cdot (y-y_{o})}{\sin^{2}\theta} }$

If we know that $v = 0\,\frac{m}{s}$ , $g = -9.807\,\frac{m}{s^{2}}$ , $y = 10\,m$ , $y=0\,m$ and $\theta = 70^{\circ}$ , the initial speed of the water droplets is:

$v_{o} = \sqrt{\frac{\left(0\,\frac{m}{s} \right)^{2}-2\cdot \left(-9.807\,\frac{m}{s^{2}} \right)\cdot (10\,m-0\,m)}{\sin^{2}70^{\circ}} }$

$v_{o} \approx 14.904\,\frac{m}{s}$

The initial speed of the water droplets is approximately 14.904 meters per second.

3 0

4 years ago

The main difference between speed and velocity involves

AysviL [449]

Direction. Velocity is a vector that describes both speed and direction, while speed is a scalar that describes only speed regardless of direction.

4 0

4 years ago

He has 54 cds and every box has 9 cds.how many boxes are in 54 cds?

Gemiola [76]

Solution:
54 / 9 = 6 boxes.

6 0

3 years ago

Which option is an example of a physical property?

Kitty [74]

B. Density. I hope this helps!

8 0

3 years ago

Read 2 more answers

A wire is oriented along the x-axis. It is connected to two batteries, and a conventional current of 2.4 A runs through the wire

Deffense [45]

Answer:

$\vec{F}=0.40176 N \hat{k}$

Explanation:

To calculate the force we need to use this equation

$\vec{F}=\int\limits^L_0 {i(\vec{dl}\times\vec{B})}$

where L is the total length of the wire

So in this case the small element of current is

$\vec{dl} = dx \hat{i}$

Because x is the direction of the current flow.

As is said in the problem B is such that

$\vec{B} = B \hat{j} = 0.62\hat{j} [ T]$

so to use the equation above we first calculate the following cross product:

$\vec{dl}\times\vec{B}=dx \hat{i}\times B \hat{j} = Bdx\hat{k}$

so the force:

$F = \int\limits^L_0 {i(\vec{dl}\times\vec{B})}=\int\limits^L_0{iBdx\hat{k}}$

So here we use the fact that B=0 in any point of the x axis that is not $x^{'}=0.27 [m]$ , that means that we only need to do the integration between a very short distant behind the point $x^{'}=0.27 [m]$ and a very short distant after that point, meaning: