Explanation:
9420 km/hr is the correct answer
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Answer:
D) selective
Explanation:
The selective placement in the adoption studies refers to practice by which the adoption agencies tend to match some definite characteristics of the adopted child's adopted parents than that of child's biological parents.
It results in the correlation of the environments between the biological relatives raised in two different homes.
<u>For example, when the child is placed in a home which is similar to the home of the biological parents.</u>
Answer:
Positron emission tomography. Positron emission tomography (PET) is an imaging technique that uses radioactive substances to visualize and measure metabolic processes in the body.
FRICTION is the most important consideration in stopping a vehicle. Stopping a vehicle involves three elements which are brake, tires and the surface with which the car is in contact. Frictional forces between the car tires and the surface contact when the brake is applied stop the car.
Acceleration = (change in speed) / (time for the change)
Change in speed = (speed at the end) minus (speed at the beginning.
The cart's acceleration is
(0 - 2 m/s) / (0.3 sec)
= ( -2 / 0.3 ) (m/s²) = -(6 and 2/3) m/s² .
Newton's second law of motion says
Force = (mass) x (acceleration) .
For this cart: Force = (1.5 kg) x ( - 6-2/3 m/s²)
= ( - 1.5 x 20/3 ) (kg-m/s²)
<span> = </span>- 10 newtons .
<span>The force is negative because it acts opposite to the direction </span>
<span>in which the cart is moving, it causes a negative acceleration, </span>
<span>and it eventually stops the cart.</span>
