Answer:
a) 
b) 
Explanation:
Given:
- efficiency of the motor,
- voltage of the battery,
- mass of the car,
a)
initial velocity, 
final velocity, 
time taken for the acceleration, 
Now we know by the Newton's second law of motion:
Now the power will be :
<u>According to the question:</u>
0.95 times of the electrical power should yield this mechanical power.
b)
height climbed by the car, 
velocity of climb,
time taken to climb the height, 
force exerted to overcome air and frictional resistances, 
Now the Power required to climb the hill:
<u>Now according to the electrical efficiency:</u>
Answer:
3a^5 - (-a^5) = 3a^5 + a^5 = 4a^5
6a^7 - 2a^7 = 4a^7
-3a^5 - (-2a^5) = -3a^5 + 2a^5 = -a^5
7a^7 - 8a^7 = -a^7
Answer:F = -2.4 * 10¹⁰ N
Explanation:To get the electric force between two charges, we would use Coulomb's law which states that:
F =
where:
F is the force between the two charges
k is Coulomb's constant = 9 * 10⁹ Nm²/C²
q1 is the first charge = 0.0072 C
q2 is the second charge = -0.006 C
d is the distance between the two charges = 0.004 m
Substitute with the givens in the above formula to get the force between the two charges as follows:
F =
F = -2.4 * 10¹⁰ N
Hope this helps :)
Answer:
True; ar = v^2 / R Radial acceleration because it moves in a circular path
at = α R = tangential acceleration because its speed changes
a = at + ar total acceleration equals sum of radial and tangential
Answer:
It was a joke i was getting the answer
Explanation:
Be percent karen
