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Eleventh Grade (Grade 11) Science Questions

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Grade 11 :: Fluid Mechanics by tanyamajmudar
The height of the liquid column that is raised in a capillary is independent of
                                         
  1. contact angle
  2. density of liquid
  3. accelaration due to gravity
  4. liquid-air surface tension
  5. depth to which the capillary is submerged
  6. radius of the tube
Grade 11 :: Waves and Sound by kieke
Pulse with Media of Different Densities
In which end of the rope is the wavelength is always greatest?
  1. in the less dense end
  2. in the more dense end
  3. Wavelength is the same throughout.
Grade 11 :: Waves and Sound by kieke
Pulse with Media of Different Densities
In which end of the rope is the wave speed is always greatest?
  1. in the less dense end
  2. in the more dense end
  3. Wave speed is the same throughout.
Grade 11 :: Light and Optics by kieke
When an image is reflected off a convex mirror, how does the image appear to the eye?
Optics - Convex Mirror
  1. The image is magnified because a convex mirror is divergent.
  2. The image is magnified because a convex mirror is convergent.
  3. The image is reduced because a convex mirror is divergent.
  4. The image is reduced because a convex mirror is convergent.
Grade 11 :: Light and Optics by kieke
When an image is reflected off a concave mirror, how does the image appear to the eye?
Optics - Concave Mirror
  1. The image is magnified because a concave mirror is divergent.
  2. The image is magnified because a concave mirror is convergent.
  3. The image is reduced because a concave mirror is divergent.
  4. The image is reduced because a concave mirror is convergent.
Grade 11 :: Forces and Motion by kieke
If a net force diagram is drawn, such as shown below, wherein the [math]F_"norm"" at A "=-(F_g)" at C"[/math], what do you know about the object?
Free Body Diagrams 4
  1. The object is accelerating in the direction of the [math]F_"app"" at B"[/math] because there is no opposing force to B, and [math]F_"app"" at "B>0N[/math].
  2. The object is accelerating in the opposite direction of [math]F_"app"" at B"[/math] because forces act in equal but opposite pairs.
  3. The object is not moving because the [math]F_"net"=F_"norm"+F_g=0N[/math].
  4. The object is accelerating in the direction of the [math]F_"app"" at B"[/math] because the opposing [math]F_"fric"[/math] must be negligible, and [math]F_"app"" at "B>0N[/math].
Grade 11 :: Forces and Motion by kieke
Calculate the net force acting on this object, and determine, if it is moving, in which direction. The normal force is 500N, the force at C is -372N, the resistive force of friction is -32N, and the force at B is 32N.
Free Body Diagrams 2
  1. [math]F_"net"=-95N[/math]; moving to the left
  2. [math]F_"net"=872N[/math]; at rest
  3. [math]F_"net"=+95N[/math]; moving upwards
  4. impossible to determine without knowing the object's mass
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