abid

What is watt?

What is power?

How to create power?

Hey man you think you could email me the second physics midterm "practice" for free if possible?? Greatly appreciated and you could save me a lot of time.

1. Two Train cars of identical mass (m = 10.0 kg) collide

and move off as shown. The left car was initially traveling at 2.0 m/s right and the right car was initially traveling at a velocity of 3.0 m/s left. After the collision, the left car is traveling at a velocity of 2.5 m/s to the left.

a. What type of a collision is depicted here?

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b. What was the initial momentum of the right car?

c. What was the initial momentum of the left car?

d. What was the final momentum of the left car?

e. What was the final momentum of the right car?

In regards to the Digestive System, describe each of the major anatomical structures of the digestive tract, beginning at the mouth. Be sure to explain the role each structure plays in the digestive process.

In regards to the Digestive System, describe each of the major anatomical structures of the digestive tract, beginning at the mouth (please include related digestive organs as well). Be sure to explain the role each structure plays in the digestive process.

Reference please

Case (IV)
With the suspension point 30cm from the left edge of the meter stick, hang a 200g mass 10cm from the left edge of the stick. Calculate the mass you must hang at a point 40cm to the right of the pivot point such that the stick hangs level and write it on the sketch.

Define Physics 

You throw a 0.5kg hal up down from a roul so your friend blow you When you throw it, it is moving with a speed of 4 mis, but by the time ches your friend, it is moving with a speed of mis. How much onerar was lost to air resistance during the throw?

Talk about the VSe2 compound in terms of its characteristics, its synthesis, and the chemical reactions it participates in?

A 60.0 kgkg crate of tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it, and the crate just begins to move when your force exceeds 313 NN. Then you must reduce your push to 208 NN. to keep it moving at a steady 25.0 cm/scm/s.

A box with mass 15.0 kgkg moves on a ramp that is inclined at an angle of 55.0∘∘ above the horizontal. The coefficient of kinetic friction between the box and the ramp surface is μk�� = 0.300.

The ship you are controlling has landed on a Kuiper Belt Object and collected some samples. It is now time to take off from the object with enough speed that you are able to escape from the body and get positioned for further scientific studies.

Your ship has a mass of 602 kg.

The object the ship is on has a radius of 63 km and has a density of 1993 kg/m^3.

When you are ready to make your prediction, click on the end button.

what  is heat?

What makes physics so cool ? To me, physics is awesome and interesting because it asks the one question no other [ physical ] science does : “How ? ” Physics looks at how things happen-the reason things happen and explains it. The ultimate goal of physics is to understand the universe around us. This ranges from tiny inter-molecular particles to huge things like entire solar systems. Physics has a bad reputation as being one of the hardest sciences you can take in high school. This can be true, but I believe every concept can be broken down and simplified. From the fundamental Newtonian equations to the famous e=mc^2 , together we will embark on a journey to better understand the world around us.

16. A semi-truck (mass = 100000 kg) collides with three cars of equal mass (mass = 2500 kg each). The semi-truck and the first car stick together and move at 40 km/hr. The other two move at =30 km/hr and = 18 km/hr respectively. Find the initial velocity of the semi-truck

4. A typical jogger burns up food energy at the rate of about 40 kJ per minute. How long would it take to run off a piece of cake if it contains 430 Calories? 

______ min

11. 

60 grams of water at 70C are mixed with an equal amount of water at 30C in a completely insulated container. The final temperature of the water is 50C.

1. How much heat is required to raise the temperature of 395 g of water from 20C to 30C?

8.  It takes 250 cal to raise the temperature of a metallic ring from 20C to  30C. If the ring has a mass of 85g, what is the specific heat of the metal? 

   ____ cal/gC

1. The speed of the Moon in its orbit is approximately } 1 km/s and the Earth-Momn distance is 380,000 km. Use these numbers to calculate an acceleration for the Moon. Your answer should be very close to in the text.

   ____  

How to workout gem why this wait training?

When 200 g of Aluminum at 100°C is dropped into an aluminum calorimeter of mass 120g and containing 150 g of kerosene at 15°C, the mixture reaches a temperature of 50° C. What is the specific heat of kerosene?

A converging lens has a focal length of 14.0 cm. Locate the images for object distances of (a) 14.0 cm, (b) 4,67 cm, and (c) 28.0 cm, if they exist. For each case, state whether the image is real or virtual, upright or inverted, and find the magnification.