Enable contrast version

Tutor profile: Tj E.

Inactive
Tj E.
Successful College Student
Tutor Satisfaction Guarantee

Questions

Subject: SAT II Physics

TutorMe
Question:

Which will have greater impact on the electric force of attraction between two charged particles, doubling the distance between the two particles, or doubling the charge in one particle?

Inactive
Tj E.
Answer:

Because electric force is calculated as (K*q1*q2)/(r^2), doubling the charge in one particle will simply double the force, but increasing the distance to double will drop the force to a quarter of the original, having a greater impact.

Subject: Calculus

TutorMe
Question:

Calculate the definite integral of the function 3x^2 + 1 from x=1 to x=5

Inactive
Tj E.
Answer:

First, to find the anti-derivative we can just undo the chain rule so that 3x^2 + 1 becomes x^3 + x + C. Using the first fundamental theorem of calculus, we can then calculate that the definite integral = (5^3)+5+C - ((1^3)+1+C). This simplifies to 5^3+3 or 128.

Subject: Physics

TutorMe
Question:

Consider a 400 N physics student riding a Ferris wheel. She decides to conduct an experiment to see what the difference in her weight is at the top of the wheel versus the bottom. If at the top of the wheel she her scale reads 300 N how much does her scale read at the bottom of the Ferris wheel?

Inactive
Tj E.
Answer:

At the top of the wheel the forces acting on the student in the y-direction can be limited to the force of her scale pushing her up and gravity pushing her down. Because of the motion of the Ferris wheel, part of the force of gravity maintains her circular motion. You can discount this when calculating her weight at the height of the wheel. This situation is mirrored at the bottom of the wheel, but with gravity instead adding to her weight. Therefore, the difference between the reading at the top of the wheel, 300 N, and her normal weight, 400 N is the negative of the difference between the reading at the bottom and her weight. Using this, we can understand that the reading at the bottom of the wheel will be 500 N.

Contact tutor

Send a message explaining your
needs and TJ will reply soon.
Contact TJ

Request lesson

Ready now? Request a lesson.
Start Lesson

FAQs

What is a lesson?
A lesson is virtual lesson space on our platform where you and a tutor can communicate. You'll have the option to communicate using video/audio as well as text chat. You can also upload documents, edit papers in real time and use our cutting-edge virtual whiteboard.
How do I begin a lesson?
If the tutor is currently online, you can click the "Start Lesson" button above. If they are offline, you can always send them a message to schedule a lesson.
Who are TutorMe tutors?
Many of our tutors are current college students or recent graduates of top-tier universities like MIT, Harvard and USC. TutorMe has thousands of top-quality tutors available to work with you.