Complete Question
The complete question is shown on the first uploaded image
Answer:
The value is
Explanation:
Generally for an n-type semiconductor the current density is mathematically represented as
Here is mathematically represented as
=>
=>
So
From the diagram
=>
So
So from
substitute
for q and
and from the diagram
So
The magnitude of the tension in the string is 9.31 N.
<h3>
Tension in the string</h3>
The magnitude of the tension in the string in the horizontal circle formed by the turn table is calculated as follows;
T = Fcos(θ)
where;
- F is centripetal force
- θ is inclination of the string
Thus, the magnitude of the tension in the string is 9.31 N.
The complete question is below:
A rotating turntable (rt=4.50 m) is rotating at a constant rate. At the edge of the turntable is a mass (m = 3.00 kg) on the end of a 5.00 m - long string (L). If theta = 40.0o,determine the magnitude of the tension in the string.
Learn more about tension in horizontal circle here: brainly.com/question/12803719
Answer:
Increasing speed.
Explanation:
In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.
Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.
Mathematically, acceleration is given by the equation;
In this scenario, an object moves with a positive acceleration. Thus, the object is moving with an increasing speed and as such it has acceleration in the same direction as its velocity with respect to time.
When 2 forces act in the same direction the add together.
Pulleys can be used to lift heavy objects that otherwise may not be able to be lifted. They reduce the amount of force it takes to lift a load.