An electric generator works on the principle of Faraday's law of electromagnetic induction. Faraday's law of electromagnetic induction states that “whenever a current carrying conductor are placed in the magnetic field, then a flux is induces in the circuit due to which a current start to flow in the rotor also.
Answer:
Answers are below hopefully they're correct and what u need
Explanation:
1. Step 1: Given
The distance is 600 km, since 100(speed) x 6 (time) = 600
2. Step 2: Formula
s = d/t
d = t x s
t = d/s
3. Step 3: Substitue
s = 600/6
d = 100 x 6
t = 600/100
4. Step 4: Solve
600/6 = 100
100 x 6 = 600
600/100 = 6
Step 5: Answer
Therefore, the distance is 600km, the speed or rate is 100 km/hr, and the time is 6hrs.
NUMBER 2
1. Step 1: Given
Distance = 200 m
Rate or speed = 8m/s
Time = ?
2. Step 2: Formula
s = d/t
d = t x s
t = d/s
3. Step 3: Substitue
t = 200/8
s = 200/25
d = 25 x 8
4. Step 4: Solve
200/8 = 25
25 x 8 = 200
200/25 = 8
5. Step 5: Answer
Therefore, the time is 25sec, distance is 200m, and speed or rate is 8m/s
Answer:
a) a = 19.0 m/s²
b) a = 2.9 m/s²
Explanation:
a) We draw the free body diagram of the box. There are 4 forces: the normal force N, the weight mg, the constant force F and the kinetic frictional force μ_kN. We can take the coordinate system which is rotated 55° from the horizontal, to ease the calculations. So, we write the equations of motion in each axis:
Substituting the expression for N in the first equation, we have:
If we plug in the given values, we have:
Since we chose the right-downward direction as positive, the positive sign in this case means that the box is accelerated downwards above the ramp.
b) In this case, the constant force F and the kinetic frictional force μ_kN point to the opposite side. In other words, we can just only change the sign of this two forces in the equations of part (a) and obtain:
Plugging in the given values:
Since we chose the right-downward direction as positive, the negative sign in this case means that the box is accelerated upwards above the ramp.
This means that the magnitude of the acceleration in this case is 2.9m/s².
Answer:
Double the charge to 2Q
Explanation:
The magnitude of a electric field caused by a charge Q at a distance R can be find by the following expression:
Where K is the Coulomb constant.
As the relationship between the charge and the electric fiel is proportional, by simply doubling the charge, you would double the magnitude of the electric field.
Notice that the distance affects the magnitude of the electric field by the inverse square. So if you half the distance, the magnitude of the field will quadruple.
Question 1
Adding an electron has no effect on the mass number but it reduces the atomic number by 1.
So, 234 91 Protactinium plus 0 negative 1 electron results to Thorium234 and
<span>7 4 Beryllium plus 0 negative 1 electron will result to </span><span>Lithium7
</span>Adding a Helium particle increases the mass number of the daughter nuclei by 4 and the atomic number by 2.
So, <span>234 90 Thorium plus 4 2 Helium will results to </span><span>Uranium238 and
</span>222 86 Radon plus 4 2 Helium will result to <span>Radium226.
<span>Question 2
</span>The mass number is the sum of protons and neutrons. If an element has y protons and x neutrons, then its mass number will be (y+x).<span>
</span></span><span>88 38 Strontium. This element has a mass number of 88 and atomic number(number of protons) 38. Neutrons = 88 - 30 = 50.
Doing the same for the other elements we have;
</span>14 6 Carbon ⇒ Neutrons = 14 - 6 = 8
<span> 127 53 Iodine </span>⇒Neutrons = 127 - 53 = 74<span>
4. 39 19 Potassium </span>⇒ Neutrons = 39 - 19 = 20