El movimiento de un bote que se transporta en un rio ocurre en ?

list all the storage forms of energy that forms of energy that you are familiar with. for each storage form, give an example of

ella [17]

Storage form of energy:

Potential energy
Nuclear energy
electrical energy
thermal energy
magnetic energy

Potential energy:

All stationary objects are having potential energy stored in it. This energy can be transferred in form of kinetic energy when it comes in the motion from rest. Example, An object placed at height h having potential energy in it. When it comes in motion from the rest the potential energy is converted into kinetic energy.

Nuclear energy:

Nuclear energy is energy that is stored in nucleus of any element. Example, fusion reaction on sun gives earth solar energy.

Electric energy:

Electrical energy is due to movement of the electrical charges. Example, In elctrical batteries electrical energy is stored.

Thermal energy:

Thermal energy is the internal energy of a substance that is transferred to other substance in the form of heat. Example, on heating water is a beaker stem energy is developed.

Magnetic energy:

Magnetic energy is the potential energy stored in the magnetic field. Example, using magnetic energy electric field is produced according to Faraday's law.

8 0

3 years ago

Sirius A has a luminosity of 26 LSun and a surface temperature of about 9400 K.What is its radius?

wlad13 [49]

Answer

Given,

Sirius A surface temperature,T = 9400 K

Sirius A luminosity,L = 26 L₀

L₀ is the luminosity of sun.

Radius of sun = 695700000 m

Temperature on sun surface = 5780 K

Luminous intensity is given by:-

$L=4 \pi R^{2} \sigma T^{4}$

Now

$\frac{L}{L_{0}}=\frac{4 \pi R^{2} \sigma T^{4}}{4 \pi R_{0}^{2} \sigma T_{0}^{4}}=26$

$\Rightarrow \frac{R^{2} T^{4}}{R_{0}^{2} T_{0}^{4}}=26$

$\Rightarrow R^{2}=26 \times \frac{R^{2} T_{0}^{4}}{T^{4}}=26 \times \frac{695700000^{2} \times 5780^{4}}{9400^{4}}$

$R=1341246640\ m=1.34 \times 10^{9}$

7 0

3 years ago

Two large, flat metal plates are separated by a distance that is very small compared to their height and width. The conductors a

mote1985 [20]

Answer:

E=0

Explanation:

Electric field due to each thin sheet of charge=\sigma/2\varepsilon

let us say the right plate has positive charge density \varepsilonand left sheet has a negative charge density -\varepsilon .

In the region between the plates,the electric field due to each plate is in same direction,

E=\sigma/2\varepsilon-(-\sigma/2\varepsilon)

E=\sigma/\varepsilon

in the region outside the plates, the field due to the plates is in opposite directions

E=-\sigma/2\varepsilon-(-\sigma/2\varepsilon)

E=-\sigma/2\varepsilon+\sigma/2\varepsilon

E=0

4 0

3 years ago

The figure above represents a stick of uniform density that is attached to a pivot at the right end and has equally spaced marks

zavuch27 [327]

Answer:

After 2.0s the angular momentum is $L= 2(4A+3B+2C+D)x$

Explanation:

Let us call forces acting on the rod, A, B, C, and D, and the separation between them $x$ .

Then, the torque due to force A is

$\tau_a = 4Ax$ ,

due to the force B

$\tau_b = 3Bx$ ,

due to force C

$\tau_c = 2Cx$ ,

and the torque due to force D is

$\tau_d = Dx$ .

Therefore, the total torque on the the stick is

$\tau_{tot} =\tau_a+\tau_b+\tau_c+\tau_d$

$\tau_{tot} =4Ax+3Bx+2Cx+Dx$

$\tau_{tot} =x(4A+3B+2C+D)$

Now, this torque causes angular acceleration $\alpha$ according to the equation

$I \alpha = \tau_{tot}$

where $I$ is moment of inertia of the stick and it has the value

$I = \dfrac{1}{3} m(4x)^2$

Therefore the angular acceleration is

$\alpha = \dfrac{\tau_{tot} }{I}$

$\alpha =\dfrac{x(4A+3B+2C+D)}{\dfrac{1}{3}m(4x)^2 }$

$\boxed{\alpha =\dfrac{3(4A+3B+2C+D)}{16mx } .}$

Now, the angular momentum $L$ of the stick is

$L = I\omega$ ,

where $\omega$ is the angular velocity.

Since $\omega = \alpha t$ , we have

$L = \dfrac{1}{3}m (4x)^2 *\dfrac{3(4A+3B+2C+D)}{16mx }* t$

$L= (4A+3B+2C+D)x t$

Therefore, $t = 2.0s$ , the angular momentum is

$\boxed{ L= 2(4A+3B+2C+D)x. }$

5 0

3 years ago

What type of wave would michael produce by shaking his finger back and forth twenty-five times per second?

STatiana [176]

B. a sound wave that he could just barely hear

4 0

4 years ago