Answer:
Explanation:
radius of cylinder r₁ = .02 m
radius of safety valve r₂ = .0075 m
force exerted by spring on safety valve = 950 x .0085 = 8.075 N .
Force required on piston of cylinder = F
Applying Pascal's law
8.075 / 3.14 x .0075² = F / 3.14 x .02²
F = 8.075 x .02² / .0075²
= 8.075 x 7.111
= 57.42 N .
Answer:
1.65×10⁻⁶ N
Explanation:
m = Mass of ant = 
r = Radius = 50 m
t = Time taken to complete on rotation = 60 seconds
Angular velocity
Centripetal acceleration is force that is acting outward
The magnitude of the upward force felt by the ant due to the second hand would be 1.65×10⁻⁶ N
Answer:
54 N
Explanation:
We have two positive charges 12uC and 5 uC ,they are kept at a distance of 10cm.
We have a relation for force between two charges q1,q2 as
Value of k is 
On substituting the values into the equation we get,
Hence the force between them is 54 N.
Answer: a. the code name for the Allied invasion of Normandy
Explanation: The operation Overlord is the code name for the invasion of Normandy, an Allied operation that launched the successful invasion of German-occupied Western Europe during WW II. This operation took place in 1944, and started with the Nornamdy landings, that are knowed as the D-day
The correct option is a: the code name for the Allied invasion of Normandy
