A transformer is an electrical device that transfers energy between two or more circuits through electromagnetic induction. Transformers are mainly used to increase or decrease voltage in power lines or electric power applications. So your answer would be D. transformer
Explanation:
Weak nuclear force:
The interaction between the subatomic particles is called weak nuclear force.
The weak nuclear force is one of the four fundamental forces.
The weak nuclear force is effective at very short distance.
The range and relative strength of weak nuclear force is 10⁻¹⁸ m and 10²⁵ with respect to gravitational force respectively
Deuterium is formed due to the fusion of protons and neutrons under the action the weak force.
Example : Beta decay
Electromagnetic force:
The interaction between the charged particles is called electromagnetic force.
The electromagnetic force is one of the four fundamental forces.
The electromagnetic force is effective at long range distance.
The range and relative strength of electromagnetic force is infinity and 10³⁶ with respect to gravitational force respectively
Example : light
Answer:
264.7 m
Explanation:
The net force felt by the car travelling along the slope is equal to the component of the weight parallel to the slope, so:
where
m is the mass of the car
g = 9.8 m/s^2 is the acceleration of gravity
and the negative sign is due to the fact the force is opposite direction to the motion of the car
The acceleration of the car is therefore:
Now we can find how far the car went up the hill by using the equation:
where
v = 0 is the final velocity of the car
u = 30 m/s is the initial velocity
g = -1.7 m/s^2 is the acceleration
d is the distance covered
Solving for d,
Let us say that:
1 = 1st player notation
2 = 2nd player notation (the opponent)
a. First let us establish the distance travelled by the 2nd
player:
d2 = 13 m/s * (t + 1.5)
d2 = 13 t + 19.5
Then the distance of the 1st player:
d1 = v0 t + 0.5 a t^2 (v0
initial velocity = 0 since he started from rest)
d1 = 0.5 * 4 m/s^2 * t^2
d1 = 2 t^2
The two distances must be equal, d1 = d2:
2 t^2 = 13 t + 19.5
t^2 – 6.5 t = 9.75
Completing the square:
(t – 3.25)^2 = 9.75 + (- 3.25)^2
t – 3.25 = ±4.5
t = -1.25, 7.75
Since time cannot be negative, therefore:
t = 7.75 seconds
So he catches his opponent after 7.75 seconds.
b. Using the equation:
d1 = 2 t^2
d1 = 2 * (7.75)^2
d1 = 120.125 m
So he travelled about 120.125 meters when he catches up
to his opponent.
The equigravity between two planets is determined from the product and their masses and square of distance between them.
<h3>Gravitational force between two planets</h3>
The gravitational force between two planets is calculated as follows;
F = GM₁M₂/R²
where;
- G is universal gravitation constant
- M₁ is mass of first planet
- M₂ is mass of the second planet
- R is the distance between the two planets
Use the mass ratio of the two planets to determine their individual masses.
Thus, the equigravity between two planets is determined from the product and their masses and square of distance between them.
Learn more about gravitational force here: brainly.com/question/72250
#SPJ1
