Answer:
The car exerts the same sized force on the bug as the bug exerts on the car.
Explanation:
Given that
Speed of car = 70 mph
Third law of Newton's
It state that when an object A apply force on the another object B then object B also apply the same force on the object A but in opposite direction .This is known as action reaction .In simple words every action and reaction.
By using the third law of concept,when car and a bug collides then car exerts the same sized force on the bug as the bug exerts on the car.
Answer:
1) Unbalanced
2) Balance
3) Balanced
4) Unbalanced
5) Unbalanced
Explanation:
For 1 and 5, since the objects are not at a constant speed/velocity, their forces must be unbalanced.
For 2 and 3, their speeds are constant so that means the force is balanced. If the bycicle or box started accelerating, that would indicate an unbalanced force
For 4, the speed is constant, but it's direction is not indicating another unbalanced outside force causing it to turn. The force is unbalanced.
3.skull
4.brain
I don’t know the other ones sorry bro
The required increase in temperature is:
Explanation:
When the temperature increases, the area of an object increases according to the equation
where
is the initial area
is the coefficient of linear expansion
is the change in area
is the change in temperature
For the steel ball in this problem, we have:
, so the radius is
Therefore, the surface area is
The coefficient of linear expansion for steel is
And the change in area of the ball is
Therefore, the required increase in temperature is:
Learn more about temperature:
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