Answer:
The magnitudes of the speed and acceleration of the Earth are approximately 66,661.217 miles per hour and 47.782 miles per square hour, respectively.
Explanation:
Given that the Earth has a circular orbit and make a revolution at constant speed around the Sun. Then, the kinematic formulas for the speed and acceleration of the planet are, respectively:
Speed
(1)
Acceleration
(2)
Where:
- Speed of the planet, measured in miles per hour.
- Acceleration of the planet, measured in miles per square hour.
- Radius of the orbit, measured in miles.
- Period of rotation, measured in hours.
If we know that and , then the magnitudes of the speed and acceleration of the planet is:
The magnitudes of the speed and acceleration of the Earth are approximately 66,661.217 miles per hour and 47.782 miles per square hour, respectively.
The answer to that question is C
1. A) In chemical equilibrium
The sign between the reactants and products is used to represent a chemical equilibrium. In a chemical equilibrium, the rate at which product is being produced is the same as the rate at which the product is being consumed to form the reactant again.
2 B) More products form
This is in accordance to Le Chatelier's principle, which basically states that a reaction mixture at equilibrium will resist any change that is produced in it. Therefore, if the temperature is increased, the mixture will move towards the products side, which has a lower temperature due to it being an endothermic reaction.
3 A) Saturated
<span>When a solution is saturated, it is no longer able to dissolve any more solute within it. A crystal of solute sitting at the bottom is an indicator that no more solute can be dissolved, meaning the solution is saturated.</span>
Answer:
to the left
Explanation:
The gravitational force exerted between two objects is given by:
where
G is the gravitational constant
m1, m2 are the masses of the two objects
r is their separation
And the force is always attractive.
Let's call
the mass on which we are calculating the net force.
The mass on the left is
and it is a distance of
r = 0.500 m
So the gravitational force exerted by this mass on the 10.0 kg mass is
And the direction is to the left.
The other mass is
and its distance is
r = 1.25 m
to the right, so the force exerted by this other mass on the 10.0 kg mass is
And the direction is to the right.
Now, to find the net force, we just have to calculate the algebraic sum, taking into account that the two forces have different directions; taking right as positive direction, the net force is:
And the negative sign means the direction of the net force is to the left.
If an object is traveling at the same constant speed AND
IN A STRAIGHT LINE, then it's demonstrating Newton's
1st and 2nd laws of motion.
If its speed or direction is changing, then it's demonstrating
Newton's 2nd law of motion.