That's true.
Magnets attract some metals such as iron, nickel, etc.
Hope this helps~
Answer:
Rolling = Riding a bicycle on a sidewalk
Static = Pushing a car unsuccessfully
Sliding = Pulling your computer across the bed
Fluid = Throwing a soccer ball to your friend
Part A.
To get the acceleration of the system we consider the two blocks as a single mass. For this situation we have, from Newton's second law, that:
where T is the tension in the upper sting and W is the weight of the system. Solving the equation for a we have:
Therefore the acceleration of the system is 2.42 meters per second per second.
Part B.
Now, that we have the acceleration of the system we analyze the lower block individually; for this block the equation of motion is:
where T' is the tension in the lower rope, W' is the weight of the lower block and m2 is its mass. Solving for the tension we have that:
Therefore the tension in the lower rope is 2.93 N
Answer:
Workdone = 40 Nm
Explanation:
Force = 20 Newton
Distance = 2 meters
To find the work done;
Mathematically, work done is given by the formula;
Workdone = force * distance
Workdone = 20 * 2
Substituting into the formula, we have;
Workdone = 40 Nm
Correct Answer: B optionPotential Difference = V = 200 V
Charge on the plate = Q =
C
Capacitance = C
Q, C and V for a parallel plate capacitor are related as:
Q = CV
⇒
C = Q/V
Using the values in the formula, we get:
F
Therefore, B option is the correct answer.