# Posts by AfterLife

Total # Posts: 21

**Physics**

A transmission diffraction grating with 600 lines/mm is used to study the line spectrum of the light produced by a hydrogen discharge tube with the setup shown above. The grating is 1.0 m from the source (a hole at the center of the meter stick). An observer sees the first-...

**Physics**

Thank you very much :D

**Physics**

Determine the magnitude and direction of the total electric force on the +q charge by the +Q and -Q charges respectively. it should express and algebraic expression using Q,q,x,d and fundamental constants. -- I am trying to post a graph but it is not willing to so I will try ...

**Physics**

Thanx I will try it out

**Physics**

a 35 g ice cube at 0.0 C is added to 110 g of water in a 62 g aluminium cup. The cup and the water have an initial temperature of 23 C . Find the equilibrium temperature of this system? in Celsius ,, I've been trying to solve this for 2 hours now , and I still can't ...

**Physics**

How do I determine the horizontal distance traveled by water passing through a hole of a punctured water bottle. You must use bernoulli's and Kinematics, and find delta x in term of h and y. ( y = the height of water inside the bottle , h = the height of the hole to the ...

**Physics**

Solved it thank you

**Physics**

The fundamental of an organ pipe that is closed at one end and open at the other end is 261.6 Hz ( middle C ). The second harmonic of an organ pipe that is open at both ends has the same frequency. What are the lengths of the pipe? I tried solving it and I got 0.65 and 0.98 ...

**Physics**

Thanks the answer was right, I related it to the small mass and it made sense ,, I submitted it , and it was right

**Physics**

No I didn't get it right :S ,, I did it like this exactly ( 0.0095 + 1.45 ) sqrt ( 2*9.8*0.124) = 0.0095 vi

**Physics**

I got my mistake ,, thank you very much for the help :)

**Physics**

Thanx ,, but I got something equals to 239.51 m/s .. and I don't think it is right .. I did it like this 1/2 ( 0.0095 + 1.45 ) sqrt ( 2*9.8*0.124) = 0.0095 vi

**Physics**

a 9.50-g bullet. moving horizontally with an initial speed vi , embeds itself in a 1.45-kg pendulum bob that is initially at rest. The length of the pendulum is L=0.745m. After the collision, the pendulum swings to one side and comes to rest when it has gained a vertical ...

**Physics**

I have an experiment in which I drop a tennis ball ,, and measure its rebound height in every bounce. one of the question regarding this experiment is - were the collisions elastic or not ? support with evidence. How do these forces magnitude compare with the weight of the ...

**Physics**

A uniform crate with a mass of 16.2 kg rests on a floor with a coefficient of static friction equal to 0.571. The crate is a uniform cube with sides 1.21 m in length. what is the minimum height where the force F can be applied so that the crate begins to tip before sliding ? I...

**Physics**

Babe Ruth steps to the plate and casually points to left center field to indicate the location of his next home run. The mighty Babe holds his bat across his shoulder, with one hand holding the small end of the bat. The bat is horizontal, and the distance from the small end of...

**Physics**

I know that ,, but I don't think the will give this kind of stupid question to a first year college student. I only know that it is a center of mass equation !

**Physics**

A 63 kg canoeist stands in the middle of her 22kg canoe. The canoe is 3m long, and the end that is closest to land is 2.5m from the shore. The canoeist now walks toward the shore until she comes to the end of the canoe. suppose the canoeist is 3.4 m from the shore when she ...

**Physics**

Derive a function that gives the final speed of the cart as a function of the masses, ramp angle and distance up the ramp that the cart moves. Use conservation of energy to do this-no kinematics or Newton's Laws. I have 3 trials ,, 3 angles and 3 masses ( cart moving up ...

**Physics**

An 8.70 kg block slides with an initial speed of 1.56 m/s **down** a ramp inclined at an angle of 28.4 with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.62. Use energy conservation to find the distance the block slides before coming ...

**arabic**

I know how to speak Arabic, but I don't get your question , if you rephrase it , I may understand what you mean ;)