When a charged particle—such as an electron, proton or ion—is in motion, magnetic lines of force rotate around the particle.
Answer:
because microscope is used to look bacteria
Answer:
Explanation:
<u>Net Force
</u>
According to the second Newton's law, the net force exerted by an external agent on an object of mass m is:
Fn = m.a
Where a is the acceleration of the object. The net force is the sum of the individual vector forces applied to the object.
The m=1500 Kg car has two horizontal forces applied: the forward force of 5000 N that causes the movement and the air resistance force of 1250 N that opposes motion.
The net force is Fn = 5000 N - 1500 N = 3500 N
To find the acceleration, we solve the equation for a:
The car's acceleration is
Answer: from charge.
Explanation:
Given
The magnitude of the first charge is
The magnitude of the second charge is
charge must be placed in between the two charges to establish equilibrium
The electrostatic force is given by
Equilibrium will be established when force by both the charges balance out each other. Suppose is placed at a distance of cm from . So, we can write
Canceling similar terms
Thus, the equilibrium position is from charge.
Answer:
I = 0.75 A
Explanation:
The question is not to calculate the resistance, but to calculate the current. (The resistance is already given by the value of 2 Ohm).
U = I * R
I = U / R
with U = 1.5 V and R = 2 Ohm
I = 1.5 / 2
I = 0.75 A