A ball travels with velocity given by Error converting from MathML to accessible text., with wind blowing in the direction given
by Error converting from MathML to accessible text. with respect to some co-ordinate axes. What is the magnitude of the velocity of the ball in the direction of the wind
1 answer:
Answer: The magnitude of the velocity = 2/5 m/s
Explanation:
In this question, the magnitude of the velocity is the product of the magnitude of the displacement vector and the magnitude of the component of the velocity that acts in the direction of displacement.
This will be a scalar projection of V onto X
Please find the attached files for the solution
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Answer:1200 kg
Explanation:
Given
Electromagnet can lift a mass of
Magnetic force necessary to hold mass is proportional to Magnetic field
and magnetic field (B) is proportional to NIA
where N=no of turns
I=current in the magnet
A=area of cross-section
When we double the no of turns and triple the current then
N becomes 2 N
I becomes 3 I
therefore magnetic field becomes 6 times
Thus magnetic force becomes 6 times and we can say that electromagnet can hold the 6 times of given weight
i.e.
Answer:
The answer is "1.26".
Explanation:
The refractive index is: