The correct option is A.
Refraction refers to the process of change in the direction of a wave propagation due to change in the transmission medium. When light travels from air to water, it slows down and this causes it to change direction slightly. The change in direction is called refraction. When light enters a denser medium, it bends more towards the normal line, the amount of bending that will be experienced depend on change in speed and angle of the incident ray.
Fossil fuel is the most abundant type of oil in the world. Natural gas is harder to find/extract and so is biofuel.
Answer:
Explanation:
<u>Center of Gravity
</u>
It refers to a point where all the forces of gravity of a body make a zero total torque. To find the solution we use the fact that the net force acting on the system boat-man is in every moment equal to zero. It's assured by the first Newton’s law, the center of gravity is at rest or in uniform motion in both moments. From an external viewer's point of view, the center of gravity remains unchanged. The formula to compute it is shown below
Originally, the man sits on the stern of the boat. His weight is applied at a distance xm=4.9 m from the pier (assumed as x=0). The boat is assumed to have a uniformly distributed mass applied at its center, i.e. at xb = 4.9 / 2 = 2.45 m. The center of gravity is located originally at
When the man walks to the prow, the boat moves x = 1.2 m from the pier, so its center is located at a distance
The man is located at
The center of gravity is computed now as
Both centers of gravity are equal, thus
Simplifying
Rearranging
Thus
Answer:
310 N
Explanation:
To overcome the force of chihuahua you will need 10 N and to accelerate at a rate of 3 m/s² you will need 100×3 = 300 N. Altogether 310 N.
By Newtons second law, F = ma
and the force required to for the acceleration of your body can be calculated as,
F = 100×3 = 300 N
Also you need to overcome the mighty canine, so you will need 1O N to pull back your leg from it.
The first one accelerate at 2m/s
the second one accelerates at 1.6666m/s
therefore statement b. the 10kg object is your answer
hope this helps :)