Answer:
Explanation:
Remark
The only thing that might trip you up is what to do with the angle. The vertical component of the 15 degrees does no work against anything. So the 15 degrees limits the horizontal force.
The formula is
Work = F * d * cos(15)
The givens are
F = 2000 N
d = 30 m
Cos(15) = 0.9659
Solution
Work = 2000 * 30 * cos(15)
Work = 57,955
Rounded to two places would be 5.8 * 10^4
C
Answer:
m = 2301.8 [kg]
Explanation:
This problem can be solved in an easy way using the definition of kinetic energy, in this way you can clear the mass, depending on the known variables.
![E_{k}=0.5*m*v^2\\replacing\\\\9023 = 0.5 *m*(2.8)^2\\m = 2301.8[kg]](https://tex.z-dn.net/?f=E_%7Bk%7D%3D0.5%2Am%2Av%5E2%5C%5Creplacing%5C%5C%5C%5C9023%20%3D%200.5%20%2Am%2A%282.8%29%5E2%5C%5Cm%20%3D%202301.8%5Bkg%5D)
Answer:
light potential energy is converted into electrical potential energy.
Explanation:
A solar heat absorbs the light that creates pairs of electron - holes, these free charges when moving create a current, the light energy stored in the radiation is converted into electrical energy within the n-p junctions.
In summary, light potential energy is converted into electrical potential energy.
Responder:
Compruebe amablemente la explicación
Explicación:
¿Qué significa que un automóvil viaje con una rapidez de 45 [(Km.) ⁄ (Hr.)]?
Si se dice que un automóvil viaja a una velocidad de 45 km / h, entonces el automóvil cubre una distancia de 45 km en una hora. 45 km / h es una derivación de la velocidad de desplazamiento obtenida de la relación;
Velocidad = distancia / tiempo
Velocidad = 45 km / 1 h.
Distancia = velocidad × tiempo
Distancia = 45 km / h × 1 h
Distancia = 45 km
Por lo tanto, a esa velocidad, se cubrirá una distancia de 45 km por cada hora que se mueva.
Answer : The electric current of a circuit is, 2.8 A.
Explanation :
Using Ohm's law :
Or,
where,
R = resistance of a circuit = 28 Ω
V = voltage of circuit = 76 volts = 76 V
I = current flowing in a circuit = ?
Now put all the given values in the above formula, we get :
Therefore, the electric current of a circuit is, 2.8 A
