If the person inserted a nail with a hammer instead of the screw with the screwdriver, the force applied would be greater, but the distance would be shorter. The correct option is A.
The action of push or pull in order to make a body change its state of motion or rest is called Force.
As the force is pressure per unit area. Force is inversely proportional to the area over which force is to applied.
The hammer would take more force to insert the nail. The screw has its helix which is to be inserted and application of force is small.
Thus, the force applied would be greater, but the distance would be shorter. The correct option is A.
Learn more about force.
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t if the person inserted a nail with a hammer instead of the screw with the screwdriver?
Answer:
D. It is no smaller than
Explanation:
The question is incomplete. These are all the options :
A. It is no larger than
B. It is
C. It is
D. It is no smaller than
To solve this problem, we have the data of :
Where ''m'' is the mass of the block
μ = 0.2
Where ''μ'' is the coefficient of static friction
If we want to find the magnitude of the force of static friction we need to use the following equation :
μ. (I)
Where '''' is the normal force that the desk exerts on the block. Its magnitude is equal to the weight (because we suppose that the block rests horizontally on the desk).
The weight '''' can be calculated as :
Where ''m'' is the mass and ''g'' is the acceleration due to gravity.
The value of ''g'' is
The weight of the block is
Now, the weight is equal to the normal force ⇒
Using the equation (I) :
The correct option is D. It is no smaller than
Answer:
The two stars will look like a single point of light.
Explanation:
When the angular separation is smaller than angular resolution, the eye will not be able to resolve the stars thus they will appear like a point source of light.Angular resolution is one of the limit that our eyes can see. Angular resolution describes how much our eyes can distinguish two things apart which depends on the angle created by the incoming light rays from the two object. A smaller angle, very small angle for light rays to enter the eye thus little or no details for the eye to distinguish.
When two stars are closer together than the angular resolution of our eyes, they appear as a single point of light.
When the angular separation of two stars is smaller than the angular resolution of our eyes, they will appear as a single point of light to our eyes. This is because our eyes cannot distinguish the individual stars due to their close proximity. This is similar to how distant stars appear as pinpoints of light.
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When hot water comes in contact with cold water , the hot water from the bottom of the vessel is hot and so reduces its density. So low density ware goes up and cold water from side or above replaces the space. This is how Energy is transferred by the process of convection from the hot water at the bottom of the tank to the cooler water at the top.
The process of heat transfer from one part of a fluid to another part by the actual movement of the particles of the fluid is called convection. Liquid and gases are heated by the process of convection.
When hot water comes in contact with cold water , the hot water from the bottom of the vessel is hot and so reduces its density. So low density ware goes up and cold water from side or above replaces the space. This is how Energy is transferred by the process of convection from the hot water at the bottom of the tank to the cooler water at the top.
learn more about convection
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Potential energy is gained here as he swings.