Answer:
Explanation:
Newton's Law of Universal Gravitation:
- F = force of gravity (N)
- G = gravitational constant
= mass of Object 1 (kg)
= mass of Object 2 (kg)- r = distance between the center of mass (m)
Let's convert our given information to scientific notation:
Now using the gravitational force and the distance between centers of mass that are given, we can plug these into Newton's law:
Remove the units for better readability.
Divide both sides of the equation by the gravitational constant G.
Distribute the power of 2 inside the parentheses.
If we evaluate the left side of the equation, we get:
Multiply both sides of the equation by r.
In order to find the mass of one asteroid, we can use the fact that both asteroids have the same mass, therefore, we can rewrite 
as 
.
Square root both sides of the equation.
Since m is in units of kg, we can state that the mass of each asteroid is 2.79 * 10⁵ kg.
Complete Question
The complete question is shown on the first uploaded image
Answer:
The distance which the car skid is 
Explanation:
From the question we are told that
The initial velocity of the car is 
The coefficient of kinetic friction is 
According to the law of energy conservation
The initial Mechanical Energy = The final Mechanical Energy
The initial mechanical energy is mathematically represented as
where KE is the initial kinetic energy which is mathematically represented as
And PE is the initial potential energy which is zero given that the car is on the ground
Now
Where 
is the work which friction exerted on the car which is mathematically represented as
Where 
is the distance covered by the car before it slowed down
=>
Answer:
2
Explanation:
BRAINLIEST?? AND THANK ME LATER!!! HOPE THIS HELPED!!!
Answer: a. both reliable and valid
The parameters used to describe a particular trait or characteristic in a human behavior should be reliable and valid, in order to determine the response of the population with respect to a particular stimulus.
