22. Cindy created a solenoid by coiling a copper wire and attaching it to a battery.
2 answers:
You might be interested in
Answer:
E = 420.9 N/C
Explanation:
According to the given condition:
where,
E = Magnitude of Electric Field = ?
v = speed of charge = 230 m/s
B = Magnitude of Magnetic Field = 0.61 T
θ = Angle between speed and magnetic field = 90°
Therefore,
<u>E = 420.9 N/C</u>
The acceleration of the car is upward
Explanation:
We can solve the question by using Newton's Second Law of motion, which states that:
where
F is the net force exerted on an object
m is the mass of the object
a is its acceleration
In this problem, we know that:
F = 900 N is the net force exerted on the car
m = 750 kg is the mass of the car
Solving the equation for a, we find the acceleration of the car:
and it is in the same direction as the force (upward).
Learn more about Newton's second law of motion here:
#LearnwithBrainly
Answer:
Explanation:
Given:
length of the stick,
position of holding the stick that acts as a hinge,
mass of the object,
position of hanging the mass on the meter stick,
new position of hanging the mass,
<u>Now the torque in the initial position:</u>
where:
acceleration due to gravity
Now when the mass is at the new position: