To look for displacement, just draw a vector from your beginning stage to your last position and settle for the length of this line. So we begin by drawing a line to the north which is 30 ft, since it is north, the line is going up, then it move 5 ft to the south, so put a line going down, so we are in 25 ft, North so that would be the answer.
Answer:
Self-motivation is the surest way to stay focused. Nearly all the most significant tasks in life are tests for our motivation. Facing challenges and achieving success requires focus; this means we need to be responsible for our motivation. People who are motivated towards achieving their goals are focused on success. The following ideas will help you stay focused and motivated in your work and studies.
Explanation:
Answer:
The distance by which the spring stretches is 1.48 cm.
Explanation:
Given that,
An object on a vertical spring oscillates up and down in simple harmonic motion with an angular frequency of 25.7 rad/s, 
We know that angular frequency in SHM is given by :
When the object is allowed to hang stationary from it, the force due to spring is balanced by its weight. Such that :
From equation (1) :
So, the distance by which the spring stretches is 1.48 cm.
Answer: A nanometer-size carrier could be designed to bring the chemotherapy drugs only to cancer cells.
Explanation:
The problem with chemotherapy as noted by the text above, is that the drugs used target both living and cancer cells and kills them regardless.
The solution therefore, would be to find a way to ensure that chemotherapy targeted only the cancer cells.
One way to do that is to design a nanometer sized carrier that would take the drugs to cancer cells alone so that they would kill only the canerous cells and leave the healthy ones.
