Top answers

All subjects
All levels

Why is profit maximising at MC=MR?

Mathematically: Profit = TR-TC Maximum profit is when the derivative of the profit function = 0 Differentiating profit: d(TR)/dX - d(TC)/dX = 0 Since the derivatives of TR and TC are MR and MC respectivel...

AP
Answered by Arjun P. • Economics tutor
10996 Views

Car 1 has a of mass 1000kg and is going at 20m/s. Car 2 has the same mass as Car 1 and is stationary. If they collide and travel together as one unit in the same direction as Car 1 was going, calculate the speed of the unit after the collision.

By Conservation of Momentum

Total Momentum Before= Total Momentum After

thus

m1v1+m2v2=(m1+m2)v3

Plugging in the numbers and re-arranging for v3 gives

100020+1000

AH
Answered by Aamir H. • Physics tutor
16068 Views

What's the difference between a eukaryotic cell and a prokaryotic cell?

Eukaryotes have a plasma membrane, nucleus, nuclear membrane, nucleolus, smooth endoplasmic reticulum, rough endoplasmic reticulum, ribosomes, mitochondria, lysosomes, peroxisomes.

Prokaryotes do n...

ED
Answered by Elena D. • Biology tutor
4444 Views

What are the 4 types of schedules of reinforcement, give an example of each.

Fixed interval: The presentation of a reward after a fixed amount of time (e.g., $1 every hour) Fixed ratio: The presentation of a reward after a fixed amount of effort (e.g., $1 every 5 questions answer...

AS
10066 Views

Explain what is meant by 'operant conditioning'.

Operant conditioning is where one is able to change the behaviour of another person or animal using reinforcement and punishment. The term was used by Skinner (1938) who demonstrated that when rats are po...

LW
Answered by Lowri W. • Psychology tutor
6727 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

Company Information

CareersBlogSubject answersBecome a tutorSchoolsSafeguarding policyFAQsUsing the Online Lesson SpaceTestimonials & pressSitemapTerms & ConditionsPrivacy PolicyGender Pay Gap Reporting

Popular Requests

Maths tutorChemistry tutorPhysics tutorBiology tutorEnglish tutorGCSE tutorsA level tutorsIB tutorsPhysics & Maths tutorsChemistry & Maths tutorsGCSE Maths tutors
CEOP logo
CLICK CEOP

Internet Safety

Sagepay logo

Payment Security

Cyber Essentials logo

Cyber

Essentials

MyTutor is part of the IXL family of brands:

IXL

Comprehensive K-12 personalized learning

Rosetta Stone

Immersive learning for 25 languages

Wyzant

Trusted tutors for 300 subjects

Education.com

35,000 worksheets, games, and lesson plans

Vocabulary.com

Adaptive learning for English vocabulary

Emmersion

Fast and accurate language certification

Thesaurus.com

Essential reference for synonyms and antonyms

Dictionary.com

Comprehensive resource for word definitions and usage

SpanishDictionary.com

Spanish-English dictionary, translator, and learning resources

FrenchDictionary.com

French-English dictionary, translator, and learning

Ingles.com

Diccionario ingles-espanol, traductor y sitio de apremdizaje

ABCya

Fun educational games for kids

© 2026 by IXL Learning