Given :
Frequency , .
To Find :
The length of a half wavelength dipole .
Solution :
Now , wavelength is given by :
Now , half length is given by :
Therefore , length of a half wavelength dipole is 1.5 cm .
Hence , this is the required solution .
Is a satellite orbiting earth free from earths gravity ? Why or why not
2 answers:
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Answer:
The other angle is 75⁰
Explanation:
Given;
velocity of the projectile, v = 10 m/s
range of the projectile, R = 5.1 m
angle of projection, 15⁰
The range of a projectile is given as;
To find another angle of projection to give the same range;
<u>Check: </u>
sin(2θ) = sin(2 x 75) = sin(150) = 0.5
sin(2θ) = sin(2 x 15) = sin(30) = 0.5
Answer:
20 [N], in the opposite direction of the first force.
Explanation:
We know that newton's second law stipulates that the sum of forces on a body must be equal to the product of mass by acceleration.
The negative sign means that the other force acting on the body must be in the opposite direction to the force of 30 [N]