Answer:
No.
Explanation:
- According to Faraday's law, the induced emf in the circuit is given by :
, it is proportional to the rate of change of magnetic flux.
- In this case, a short piece of wire that is not attached to anything and move it up and down in a magnetic field. It means that the circuit is not completed here. It is an open circuit. For the induction of current, a circuit must be completed.
- Hence, no current will induce.
Answer:
<em>The amount of charge increases.</em>
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Explanation:
For a capacitor that has its plates still connected to a battery, the voltage on the capacitor remains constant. If the distance between the two plates of this capacitor is decreased, the capacitance will increase, and then the charge on the plate will increase in accordance with the relationship
Q =CV
From this relationship, if V is held constant, then Q has to increase for C to increase also.
Answer:
Given: velocity from ( vovo ) 10 m/s to ( vfvf ) 15 m/s after traveling(d) 5 meters.
Use of this equation:
v2f=v2o−2⋅a⋅dvf2=vo2−2⋅a⋅d
152=102+2⋅a⋅5152=102+2⋅a⋅5
225 = 100 + 10a
125 = 10a
a = 12.5 m/s 22
a. distance: 10 km
The distance covered is equal to the sum of the distance of each part of the journey.
In this case, Sarah's trip consists of three parts:
- 2 km north from the house to the grocery store
- 3 km north to grandma's house
- 5 km back to reach home
So the distance covered is the sum of all these parts:
d = 2 km + 3 km + 5 km = 10 km
b. displacement: 0
Instead, displacement is defined as the distance (measured in a straight line) between the final point of the motion and the initial point of the motion. So displacement does not depend on the path taken by the object, but only on the final and initial position.
Here we have:
- Final position of Sarah's journey: home
- Initial position of Sarah's journey: home
So, the displacement is zero, because the final point corresponds to the initial point.
<span>The correct option is: (A) 41 °F (5°C)
Explanation:
As the temperature increases (from 6-7 °C), the tendency of a bacteria to grow also increases. Therefore, it is recommended to keep the temperature of refrigeration units, salad bars and other cold items at 41 °F (5 °C) or colder. Hence, the correct answer is option (A).</span>