Who discovered electricity
2 answers:
You might be interested in
Answer:
5 mm
Explanation:
Youngs's modulus (Y) is described by the following expression:
Where F is the force exerted on the tendon, L is its length, A is its area and ΔL is its change in length (stretching).
The force in this case is 8 times the weight of the runner:
Therefore, the change in length of the tendon is given by:
the runner's Achilles tendon will stretch by 0.004989 m, which is roughly 5 mm.
Answer:
Explanation:
Parameters given:
Charge of object, q = 5 mC =
Acceleration of object, a =
Mass of object, m = 2.0 g
The Electric field exerts a particular force on the object, causing it to accelerate (Electrostatic force).
We know that Electrostatic force, F, is given in terms of Electric field, E, as:
F = qE
This means that the object exerts a force of -qE on the Electric force (Action with equal and opposite reaction).
The object also has a force, F, due to its acceleration a. This force is the product of its mass and acceleration. Mathematically:
F = ma
Equating the two forces of the object, we get:
-qE = ma
=>
Solving for E, we have:
The magnitude will be:
The electric field has a magnitude of 0.002 N/C.
Answer:
I = 1.944 A
Explanation:
<u>Given the following data;</u>
Charge, Q = 3.5C
Time, t = 1.8 secs
Charge of a substance is given by the formula;
Where;
Q is the amount of charge measured in Colombs.
I is the current measured in Amperes.
t is the time measured in seconds.
Making I the subject of formula, we have
I = 1.944 A
Therefore, the current in the circuit is 1.944 Amperes.