Its because the Earth is spinning and also because the Earth itself is moving around the sun <span />
Answer:
C. 150 N to the left
Explanation:
If we take right to be positive and left to be negative, then:
∑F = -450 N + 300 N
∑F = -150 N
The net force is 150 N to the left.
Answer:
The sides move away because the rod itslef is magnitized so north and north , south and south don´t attract vice versa.
Explanation:
First, we need to fight the weight of the balls instead of their mass. We do this by multiplying their weight it kg by 9.8. This gives us .98 N. To find the potential energy of the rolling ball, we find its kinetic energy. The formula for this is KE=mass*velocity^2*1/2.
Plugging in our numbers, we have Kinetic energy = .1 * 1^2*1/2 which gives us .05 joules.
Now we find the potential energy of the ball on the shelf. For this we do:
Potential energy = .1*9.8*1, and our answer is .98 joules. Clearly, the ball on the shelf has more energy.
Answer:
Size
Explanation:
A vector is a quantity that has both a direction and magnitude.
The direction the arrow is pointing represents the direction of the vector, and how big the arrow is represents the magnitude.
You can remember this as "magnitude" means the exact same thing as size.