Answer:
Since the net force is to the right (in the direction of the applied force), then the applied force must be greater than the friction force. The friction force can be determined using an understanding of net force as the vector sum of all the forces.
Explanation:
Answer:
C and D
Explanation:
an object that is projected at an angle where gravity is the only force acting on the object
In order to solve this, we will use the formula
where n is the index of infraction, c is the speed of light (3x10^8), and v is the medium in which the velocity is measured
solving for n,
n = (3x10^8)/(2.75x10^8) = 1.09
Answer:
Pressure = 20 MPa
Explanation:
Given:
Force acting on the shoe is, 
Area of shoe on which the force acts is, 
Now, first we convert the area into its standard unit of m².
We have the conversion factor as:
1 cm² = 
Therefore, the area of shoe in square meters is given as:
Now, pressure on the shoe is given as:
Plug in 100 N for 'F', 
for 'A' and solve for 'P'. This gives,
Now, we know that,
Therefore, the pressure acting on the shoe is 20 MPa.
C. diffraction
Diffraction by description is occurrence
where the sound wave is interrupted or interacts with certain obstructions or
barriers. According to Huygens-Fresnel principle, it is where the waves are interfered
by said circumstances during its travel in the confined specific space.
Furthermore, the amount of
size the wavelength is directly proportional to its interacted slit or barrier
thus, these behaviors and amount are positively correlated.
Moreover, it occurs in a variety
of waves –may it be sound waves, water waves or electromagnetic waves.
