Attraction (right?), so the + charge will try to go to the - charge. Force on + charge will be directed towards left. The magintude is Coulomb's law:
F = k * Q1*Q2/d^2, K = 9*10^9, Q1 = -4*10^(-6), Q2 = 6*10^(-6), and d = 0.45
-9*4*6*10^(-3)/0.45^2 = -1.0633 N, but check it (sign means attractive).
Some teachers prefer to say that magnitude is always positive, like in math, so 1.0633 N but then say attractive and directed to the left of the + charge, to make sure no one can complain you miss anything! Ask your teacher
Answer:
C. The concentration of the copper sulfate is too low
Explanation:
Imagine a crowd of people al jumping around in a room blindfolded. they will bump into each other and the walls. molecules behave the same way as a result of their temperature. the hotter the temperature, the more jumping and the greater the 'pressure' on the walls.
Answer:
The expansion and contraction of materials can also cause problems. For example, bridges expand in the summer heat and need special joints to stop them bending out of shape.A bimetallic strip has two metal strips glued together. One of these metals expands more for each degree temperature rise than that other.
The acceleration of the baseball is:
where
and
are the final and initial speed of the ball, and
is the time interval in which the force acted.
Replacing the numbers, we get
And at this point, we can use Newton's second law F=ma to find the value of the force of the pitching machine: