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Salmon, swimming up the Fraser river to their spawning grounds, leap over all sorts of obstacles. The unofficial salmon-altitude record is an amazing 3.54 m jump (vertical distance). Assuming the fish took off at 45.0 degrees, what was its speed on emergi...

You are testing a new car in a wind-tunnel for road and wind resistance. At speed of 90.0 km/h you have found that 74.0 % of the total output power of an automobile engine is used in overcoming the resistance of the road and wind against the movement of t...

A trunk of mass m = 1.100 kg is pushed a distance d = 32.0 cm up an incline with an angle of inclination theta = 26.0 ° by a constant horizontal force P = 150. N. The coefficient of kinetic friction between the trunk and the incline is 0.330. a) Calculate...

The coefficient of kinetic friction for a 34.3 kg bobsleigh on a track is 0.150. What external force is required to push it down a 5.60° incline and achieve a speed of 60.12 km/h at the end of 75.2m ?

A box weighing 136. N rests on a table. A rope tied to the box runs vertically upward over a massless frictionless pulley and a weight is hung from the other end. What is the force that the table exerts on the box if the weight hanging the other side of t...

During a violent thunderstorm, hail the size of marbles (diameter = 2.10 cm) falls at a speed of 37.0 m/s. There are estimated to be 175.0 hailstones per cubic meter of air. Assume that, as for ice, 1.00 cm³ of hail has a mass of 0.920 g. What is the mass...

What is the angular momentum (in J*s) of a mass of 1.45 kg which completes an orbit about a point 23.0 meters away every 5.30 seconds.

Taking a decibel to be an increase in pressure of 12.2%, by what factor has the pressure changed when the sound level has fallen by 8.00 decibels?

Question 2 - Liquid vitamin C, (ascorbic acid) C6H8O6 , readily reacts with atmospheric oxygen, O2, to form liquid dehydroascorbic acid, C6H6O6 and water. a) Explain why this is a chemical reaction. b) Write a balanced equation for this reaction. c) How m...

Liquid vitamin C, (ascorbic acid) C6H8O6 , readily reacts with atmospheric oxygen, O2, to form liquid dehydroascorbic acid, C6H6O6 and water. How many mole of oxygen gas is required to react with 1000.0 mg of vitamin C? Chemistry - DrBob222, Wednesday, Ap...

@DrBob222, i am needing assistance for the same questions... i am having trouble understanding the last 3... can i email you or something that would be helpful

Im not sure how to do Using the coefficients in the balanced equation, convert mols vit C to mols to mols O2. that part though

Can someone tell me how to do "Using the coefficients in the balanced equation, convert mols vit C to mols to mols O2." that bit please

ive spent 3 days looking for help in text books and google and past lectures and still cant work it out... next thing is to ask people who know what they're doing