Answer:
<em>El niño y el trineo se mueven a 3.61 m/s</em>
Explanation:
<em><u>Energía Cinética</u></em>
Un cuerpo de masa m que se mueve con rapidez v, posee una energía cinética de:
Se nos dice que un niño de 35 Kg está sobre un trineo de 5 Kg y ambos viajan juntos. La masa total del conjunto es m=40 Kg.
Además sabemos que su energía cinética es de 260 J y requerimos calcular su velocidad.
Eso lo haremos despejando v de la ecuación anterior:
v = 3.61 m/s
El niño y el trineo se mueven a 3.61 m/s
The second wire has 1/2 the <u>radius</u> of the first wire.
Now the area of a circle is (A =π r²) ... the area changes in proportion to the SQUARE of the circle's radius.
So if you cut both wires exactly perpendicular to their lengths, and look at the circular end where the cut is, the second wire has only 1/4 the cross-section AREA of the first wire. Current in the second wire is trying to squeeze through a pipe that only has 1/4 the space to carry it.
The resistance of a piece of wire-2 is 4 times the resistance of a piece of wire-1 with the same length.
The resistance of wire-2 is (4 x 0.5 ohm) = <em>2 ohms</em> .
I believe the answer is coal
Answer:
The depth and acceleration are 0.1919291 ft and 3.61 m/s².
Explanation:
Given that,
Density of block 
Density of fluid 
We need to calculate the depth
Using balance equation
....(I)
We know that,
The density is
Put the value of m in equation (I)
Put the value into the formula
We need to calculate the acceleration
Using formula of net force
....(II)
Put the value in the equation (II)
Hence, The depth and acceleration are 0.1919291 ft and 3.61 m/s².
As we know the relation between linear speed and angular speed as
we will say
so here we can say that angular speed will be given as
so it is rotating at angular speed 160 rad/s
