Main uses of spring balances are industrial, especially related to weighing heavy loads such as trucks, storage silos, and material carried on a conveyor belt. They are also common in science education as basic accelerators. They are used when the accuracy afforded by other types of scales can be sacrificed for simplicity, cheapness, and robustness.
A spring balance measures the weight of an object by opposing the force of gravity acting with the force of an extended spring. hope you can get some use from this
Opposite attract , this is the magnetic south pole
option (b) ✔
Answer:
The magnitude of the magnetic field is 10.19 T.
Explanation:
Given that,
Charge on the doubly charged molecule, q = 2e
Magnetic force, 
Speed of molecule, v = 207 m/s
The angle to the direction of the field is 74.9 degrees.
We need to find the magnitude of magnetic field. The formula of magnetic force is given by :
B is magnetic field
So, the magnitude of the magnetic field is 10.19 T.
The time taken for Train A to be 39.1 miles ahead of Train B is 2.7 hours
<h3>How to determine the relative speed</h3>
- Speed of Train A = 41.1 mph
- Speed of Train B = 26.5 mph
- Relative speed =?
Relative speed = 41.1 - 26.5
Relative speed = 14.6 mph
<h3>How to determine the time to be 39.1 miles apart</h3>
- Relative speed = 14.6 mph
- Distance = 39.1 miles
- Time =?
Relative speed = distance / time
14.6 = 39.1 / time
Cross multiply
14.6 × time = 39.1
Divide both side by 14.6
Time = 39.1 / 14.6
Time = 2.7 hours
Thus, it will take train A 2.7 hours to be 39.1 miles ahead of Train B
Learn more about speed:
brainly.com/question/14334174
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