Answer:
4.62N
Explanation:
Since the motion covers 1 circle (or 2π rad) per 0.8 seconds, its angular velocity is
Radius of the circular motion is r = 75 cm or 0.75m. We can calculate the centripetal acceleration of this mass
From Newton's 2nd law, we calculate the centripetal force, which is also the tension of the string:
Answer:
the correct answer is A
Explanation:
In a series circuit the current flows through the circuit and when it is opened at some point the current stops throughout the circuit.
In a parallel circuit, the current flows through the different branches of the circuit and when the current in one branch is interrupted, it continues to flow through the others.
In this exercises they indicate that the bedroom lights are turned off (the circuit was opened), but the kitchen lights are still on, therefore it is a parallel circuit with at least two branches, the current that circulates through each one depends on the existence on each branch.
Therefore the correct answer is A
Answer:
Bowling Ball
Explanation:
The potential energy depends on the factors: mass of the object and distance between the two objects. In this case the distance is between the ground and the balls. Here, the bowling ball is heaviest and its center of mass is farthest in comparison to other two balls. Thus, it has the greatest potential energy.