Power =(work done) / (time to do the work) = 240 J / 120 sec = 2 watts.
The magnitude of a velocity vector is 60 m/s.
To find the magnitude, the given values are,
x - components = 36 m/s
y - components = 48 m/s
<h3>What is magnitude?</h3>
- The term magnitude can be defined as “ quantity ”.
- For instance, the magnitude can be used for describing about the comparison of speeds.
- It can also be used to explain the distance travelled by an object or to explain the amount of an object in terms of its magnitude.
- Magnitude of the velocity vector is total value which is square root of the value.
The magnitude of the vector can be,
| a | = √ ( x² + y² )
Substituting the values of x component and y component given,
= √ ( 36² + 48² )
= √ ( 1296 + 2304)
= √ 3600
= 60 m/s
The magnitude is found to be 60 m/s.
Hence, Option B is the correct answer.
Learn more about magnitude,
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Hi there!
We can use the equation for the charge of a charging capacitor:
Using Capacitor equations:
Therefore, Cε equals the steady-state charge of the capacitor (the function approaches this value as t ⇒ ∞.
We can plug in the givens and solve.
B. Density. I hope this helps!
Answer:
1. True
2. True
3. False
4. False
5. True
6. False
Explanation:
Acceleration: It refers to the change in velocity/speed of an object with respect to time. When the speed increases with time we call it acceleration and when its decreases it is called as deceleration. Let us analyze each instance individually:
1. When roller coaster starts to roll down the track its speed will increase with time. That means it is accelerating.
2. When the ball reaches at the peak of its trajectory, it comes to a stop for a fraction of a second that means it decelerates.
3. Since the velocity remains constant there is no acceleration.
4. Since the speed is no changing with time, there is no acceleration.
5. Since the moving plane comes to a stop, it is a case of deceleration.
6. Since the truck is moving at a constant speed so the acceleration is zero.
