Question 7 of 10
2 answers:
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Explanation:
It is given that, a stone travel over level ground if it is thrown upward at an angle of 30.0° with respect to the horizontal.
Speed with which it is thrown, v = 11 m/s
We need to find the maximum height above the ground level. The maximum height attained by the stone is given by :
h = 1.54 m
So, the stone will travel a distance of 1.54 meters.
Range of a projectile is given by :
R = 10.69 m
So, the maximum range achieved with the same initial speed is 10.69 meters. Hence, this is the required solution.
This question involves the concepts of induced emf and magnetic field.
The wire has to move at a speed of "20 m/s".
<h3>Speed of Wire</h3>The emf induced in a current carrying conductor when it passes through a magnetic field is given by the following formula:
where,
- v = speed = ?
- E = induced emf = 10 volts
- B = magnetic field = 2.5 T
- l = length of wire = 0.2 m
Therefore,
v = 20 m/s
Learn more about induced emf here:
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