I'm afraid I'm not familiar with the equation you presented E_t=V_i*E_i+V_r*E_r. What is it for?
Also, I need some help with computing the young's modulus. You see, we conducted 3 tries of putting 1180 grams of weights on the material, and in the 4th try, the material finally gave way. What do...
For our thesis, my friends and I made a pine needle packaging material made of brown pine needle bits about 1 inch in length and cornstarch paste. We attempted to get its Young's modulus to determine its tensile and compressive strength. This is how we did our experimentation:
The packaging...
Oh I see =D. Thank you so much! ^___^
I have another related questions... umm... among our subproblems is this: "Determine the phytochemicals in H. annuus that can destroy the bacteria E. coli." I found a list of the flower's phytochemicals...
Our investigatory project for this year is entitled "The Antimicrobial Effect of Helianthus annuus on Escherichia Coli". I will be needing H. annuus extracts. I understand that there are a number of types of extracts and extraction methodologies. Which type of extract must be used for microbial...
I think it's a free-fall motion problem. You use the UAM (uniformly accelerated motion) formula d = (Vf^2 - Vi^2) / 2g, but make sure that g is negative since the projectile was shot upwards.
During the performance of the Bouglione circus in 1976, John Tailor was fired from a compressed-air cannon whose barrel was 20m long. Taylor emerged from the cannon at 40 m/s. If Tailor's mass was 70kg, find the force on him during the firing of the cannon.
I'm at a loss for what to do. I...
1. A sport car starting from rest can attain a speed of 60 mi/hr in 8s. A runner can do a 100-yd dash in 9.8s. Assume that the runner is moving with a constant speed and that the car starts at the instant he passes it. How far will both travel until the car overtakes the runner? (convert...
A truck traveling east has a velocity of 26 m/s. (a) Calculate its velocity after accelerating at 1 m/s2. (b) The truck then decelerates at -2 m/s2 for 3 s. Now what is its velocity? (c) The truck then takes 8s to change its velocity to 21 m/s. What was its final acceleration?
I tried using...
For our investigatory project, I and my groupmates are going to test the efficiency of water cress in cleaning wastewater. We're going to adapt the concept of the Green Roof Water Recycling system, where the wastewater from kitchen and bathroom sinks gets pumped up to the roof and gets trickled...