Answer:
The books are displaced to the left due to inertia and ultimately halt when impacted by the car door.
Explanation:
The movement of the books can be understood through Newton's first two laws:
- The first law (Law of Inertia): an object will remain at rest or continue moving in a straight line unless an unbalanced force acts upon it.
- The second law: if unbalanced forces act on an object, it experiences an acceleration that can be described by the formula
where F is the object's net force, m its mass, and a its acceleration.
Now let's relate this to the scenario:
- When Argelia makes a sharp right turn, the books, which are not secured in the car, maintain their straight-line motion due to inertia so they appear to move left as the car shifts right.
- Upon contacting the car door, the books cease moving due to the second law: the door exerts an unbalanced force, causing the books to decelerate and ultimately come to rest.
Before any forces are applied, all cars maintain a constant speed of 2 m/s. Following that, the ranking is as follows:
1. Best: 6th car; Fr = 10 N,
2. 1st car ; Fr = 2.95 N.
3. Next: 2nd, 3rd and 5th car ; Fr = 0 N
4. Least: 4th car ; Fr = -2.04 N.
Answer:
The output power of the circuit is 3 Watts.
Given:
a loss in decibels = 3 dB
Input power = 6 Watts
To find:
What is the output power?
Formula used:
Output power = Input power × loss in ratio
Solution:
3 dB loss corresponds to a ratio of 0.5
Output power can be calculated as follows:
Output power = Input power × loss in ratio
Output power = 6 × 0.5
Output power = 3 Watts
Therefore, the output power of the circuit is 3 Watts.
V = I * R, where V signifies voltage, I represents current, and R is resistance. According to Ohm's law, to determine the current through the wire, resistance is required. In theory, if the wire had zero resistance, it would lead to infinite current, which is not feasible. This negligible resistance could refer to the internal resistance of the battery rather than the wire itself.
Answer:
She exerts a force of 40 N.
Explanation:
The fact that the ring remains stationary indicates that the forces are in equilibrium.
Let’s denote Jo's force as x.
The equation to consider is
140 = x + 100
x = 40
