B.The surface of the lake is transparent.
C.The surface of the lake is polished.
D.The surface of the lake is rough.
Answer: The correct answer is "The surface of the lake is smooth".
Explanation:
The light gets reflected from the smooth surface at the same angle as it hits that surface. If the light gets reflected in all direction from the rough surface when it hits the surface. Then, there will be diffuse reflection.
In the given problem, Leon sees a poster that shows a lake in front of a snow-capped mountain. The mountain appears upside down in the lake. Here, the water acts like a mirror. The light rays incident on the surface of the water from the mountainthen the reflected rays get reflected back from the smooth surface of the lake. Here, the angle of incidence is equal to the angle of the reflection.
One can see the image of the object on the surface of the lake.
Therefore, the correct option is (A).
Answer:
the answer is a.
Explanation: have a good day loves
I'm assuming you're asking for the elevator's final velocity.
Consider the following equation:
Vf = Vi + aΔt
Vf is the final velocity.
Vi is the initial velocity.
a is the acceleration.
Δt is the amount of elapsed time.
Given values:
Vi = 12.60m/s
a = -3.60m/s²
Δt = 2.97s
Substitute the terms in the equation with the given values and solve for Vf:
Vf = 12.60 - 3.60×2.97
space shuttles
c.
single use rockets
b.
space stations
d.
space probes
The word momentum means mass and velocity taken together.
Mass is an intrinsic basic physical quantity which tells us about the amount of matter contained in a body. It is a scalar quantity and it is measured in kilogram(Kg).
Velocity is the rate of change of displacement . It is defined as displacement per unit time. It is a vector quantity and measured in meter per second (m/s)
The product of mass and velocity is momentum. When a body possesses both mass and velocity we say that it has momentum. It is a vector quantity. Its unit is kg m/s
Mathematically we write momentum as,
P = mv
Mathematically we write momentum a
Where, P = momentum
m = mass
v= velocity.
When a force is applied on a body, it changes its momentum. The relationship between force and momentum is given by Newton's second law of motion which states that the rate of change of momentum is directly proportional to the force applied,
F = Δp /Δt
Where F= force
Δp = change in momentum
Δt = time taken for the change in momentum to occur.
To know more on momentum here
#SPJ2
Answer:
In my mind when I hear the word momentum it comes that it is the product of mass and velocity.
inclined plane AND pulley
B)
lever AND wheel-and-axle
C)
pulley and lever
D)
wheel-and axle AND inclined plane