Answer:
306.4J
Explanation:
Given parameters:
Displacement = 50m
Force = 80N
Angle = 40°
Unknown:
Work done = ?
Solution:
Work done is the force applied to move a body through a certain distance.
Work done = Force x displacement cos Ф
Work done = 8 x 50 cos 40 = 306.4J
Answer:
yes you are totally right
Answer:
A new theoretical design using nanowires provides a way to hide ... But to make things truly disappear before our eyes, a way will need to be ...
Shh! Computer simulations predict that certain materials could allow sound waves to pass by undisturbed, effectively making them acoustically ...
Explanation:
Answer:
200 m
Explanation:
Path difference of waves from A and B = 100m
For destructive interference
Path diff = ( 2n+ 1 ) λ / 2
100 = ( 2n+ 1 ) λ / 2
λ = 200 / ( 2n+ 1 )
For maximum λ , denominator should be smallest which is possible for
n =0
λ = 200 / 1
= 200 m
Even though the mass of the earth stays the same, the force gravity has on us will double because there is less space in the atmosphere for the gravity to pull anything in towards its center. Let me know if I'm correct!