Enable contrast version

Tutor profile: Marshall F.

Inactive
Marshall F.
Private tutor for 3 years
Tutor Satisfaction Guarantee

Questions

Subject: Physics (Newtonian Mechanics)

TutorMe
Question:

A person is pushing a 20kg block on the ground with a force of 200 newtons. The coefficient of friction between the block and the ground is 0.3. What is the horizontal acceleration of the block. assuming the block is just starting to move.

Inactive
Marshall F.
Answer:

1: Find the normal force on the box from the ground. Find the weight of the block(mass*acceleration(gravity): 9.8*20=196 kg*m/s^2=196 N=Fn *note: the normal force equals the weight of the block as it is not on an angle. 2: Find the force of friction Friction=Fn*coefficient of friction=0.3*196=58.8N 3: Find sum of forces Only two forces acting horizontally, friction and the pushing force. These forces are in opposite directions. 200-58.8=141.2N 4: Find the acceleration Acceleration=Force/mass=141.2/20=7.06 m/s^2

Subject: Calculus

TutorMe
Question:

Evaluate the integral of xe^(5x)

Inactive
Marshall F.
Answer:

For this question you must use integration by parts! This is done by defining one component as u, and the other as dv. For this equation, we will set x as u and e^(5x) as dv. So, using simple derivations/integrations we see that du=derivative(x)=1, and v=integral(e^(5x))=e^(5x)/5. From this, we will use the equation Integral(u*dv)=u*v-Integral(du*v). Then, plugging in we get x*e^(5x)/5-Integral(e^(5x))/5*1), which simplifies to xe^(5x)/5-e^(5x)/25!

Subject: Materials Science

TutorMe
Question:

How would you perform a 3D analysis of chemical composition within ~1% accuracy of a conductive material.

Inactive
Marshall F.
Answer:

Using Xray photoelectron spectroscopy. In order to get the depth profile you must bombard the sample with ions with zalar rotation in order to avoid mixing of layers. This will allow an accurate depiction of the materials composition throughout its depth. This is helpful for applications like electronics.

Contact tutor

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

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.
BEST IN CLASS SINCE 2015
TutorMe homepage
Made in California by Zovio
© 2013 - 2021 TutorMe, LLC
High Contrast Mode
On
Off