Recent content by letsfailsafe

Homework Statement An object with a mass of m = 4.80 kg is attached to the end of a string wrapped around a reel of radius R = 0.230 m and mass M = 3.00 kg. The reel is a solid disc. The suspended object is released from rest 1.90 m above the floor. http://imgur.com/ElfqPSX a) Determine the...

I have realized patterns throughout talking to people about: movie genres, movie quotes and actors. From my school, people with high academic achievements, broad general knowledge and good thinking skills tends to like more 'artistic', highly rated and 'award winning' movies. I will call these...

I have always interested in psychology and never properly studied psychology in my life. But over the years I have learned about many things by learning about famous psychology experiments. However I cannot seem to get sufficient enough information to ‘understand’ human’s fundamental social...

Thank you I've finally got and understood the first question. I still don't know how to solve the second question... :/

Sorry, I really do not know how to do these questions...

Homework Statement The diagram shows a proton moving with Ek of (0.178)(10-12)J towards a stationary nucleus X. The proton hits X and is absorbed. The resulting nucleus splits into two alpha particles, which move off in the directions shown with equal Ek of (1.481)(10-12)J 1. Calculate the...

α = 0.001 / ((0.015)(0.06)2) = 18.5185 is not right...

Homework Statement First question: "A DVD player can exert a torque on a DVD of 10−3 N⋅m. What is the DVD’s angular acceleration in rad/s2? Details and assumptions The DVD has a mass of 0.015 kg and a radius of 0.06 m. A DVD can be modeled as a thin uniform cylinder. " Second question: "A...

The answer says its 1.1m...

Oh man... stupid mistake... please help me do the question 12!

Using point X as the pivot point then: Total clock wise t = total anti clock wise t (Fb x 1.5) + (10 x 3) = (28 x 2) 1.5 Fb + 30 = 56 1.5 Fb = 56 -30 Fb = (56-30)/1.5 = 17.3333 17.33N The answer says 52N...

For question 11. Total clockwise t = total anti clock wise t (10 x 3) = (28 x 2) (Fb x ??) Total tension will be: 28N + 10N + Beam weight force (?) Problem here is that I don't know the weight force of the beam... That was my attempt before I post this online...For question 12. Total support...

Homework Statement Questions are included in the photo Homework Equations The Attempt at a Solution

The question: "In each circuit the lamps are identical. Calculate the current through, and voltage across, each lamp." Answers: For first problem (question 5). A: 18V, 6A B,C: 4V 2A D,E,F,G: 2V 1A For second problem (question 6). A: 12V 6A B: 8V 4A C,D: 4V 2A E,F,G,H,I,J: 4V 2AI've got most...

Sorry for my notations... DEFG| 2V means D, E, F, G, all have 2V of course CD| 8V means that C and D both have 8V Thought I should save some time and space by putting them all together...