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Calculate the concentration of dissolved oxygen at 20 degree Celsius if the amount of dissolved O2 is 9.07 mg/L
A capacitor of 652. microfarad is charged to 21. volts. Find the stored charge in the capacitor in coulombs
A power supply has an open-circuit voltage of 43.0 V and an internal resistance of 2.00 ?. What additional resistance should be added in series
Why is the temperature 60 instead of 328K?
In water, every sulfuric acid molecule transfers H+ to water and becomes an HSO4 - ion. Some HSO4 - ions give off another H+ to form SO4 -2 ions. Which statement is true?
At a certain temperature, the equilibrium constant for the following chemical equation is 3.30. At this temperature, calculate the number of moles of NO2(g) that must be added to 2.86 mol of SO2
1. Describe the method you would use to seperate a mixture of water(boiling point=100) can be seperated from ethanol(boiling point= 60c)
The primary coil of a transformer has N1 = 2.00 102 turns, and its secondary coil has N2 = 6.67 101 turns. what rms voltage is developed across the secondary coil
A positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. how fast is the positron moving
An object starting from rest accelerates with a constant acceleration A(none) for a time T(none) after which it moves at a constant velocity for T1 seconds. what is the total distance the object tra
For my class data from reading a value off the buret with water inside my class results are 11.21, 11.23, 11.23, 11.23, 11.23, 11.24, 11.24, 11.25, 11.25, 11.25, 11.25, 11.25, 11.26, 11.28, 11.28
A 1000 kg flat railroad car is rolling to the right at 4.5 m/s. A 60 kg man, is standing on the right end of the cart watching the track in front of the car. What is the final speed of the train ca
A 0.520kg glider on an air track is attached to the end of an ideal spring with force constant 453N/m; it undergoes simple harmonic motion with an amplitude of 4.10×10?2m. Compute the maximum
A uniform disk of radius 0.471 m and unknown mass is constrained to rotate about a perpendicular axis through its center. Find the mass of the disk
A 92.0-kg astronaut and a 1200-kg satellite are separated from the space ship, and are both at rest with respect to the ship without any method of getting to the ship. how far away from the ship is
A sled slides without friction down a small, ice-covered hill. If the sled starts from rest at the top of the hill, its speed at the bottom is 7.50 m/s. What is the speed at the bottom of the hill
What is the pitcher's power output during the pitch and How much work does the pitcher do on the ball
According to contemporary views of emotion, an emphasis on what factor may account for the vast range of emotional reactions that individuals have toward the same event?
A 0.14-kg pinecone falls 16 m to the ground, where it lands with a speed of 13 m/s. What was the average force of air resistance exerted on the pinecone
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A large electromagnet coil is connected to a 118 -Hz ac source. The coil has a resistance 450 ohms, What is the inductance of the coil
A 3100 kg cannon is mounted so that it can recoil only in the horizontal direction. Calculate the magnitude of its recoil velocity when it fires a 14.0 kg shell at 480 m/s at an angle of 20.0° ab
A 1.0--diameter oil droplet (density 900 kg/m^3) is negatively charged with the addition of 28 extra electrons. What is the surface charge density of the plane
An electric heater consumes electrical energy at a rate of P = 350 W, What is the maximum power that could be drawn if the circuit contained a circuit breaker that limited the current to no more than
A battery (V = 2.4 V) contains E = 2.2 kJ of energy. It is connected to a P = 8 W light bulb. Input an expression for the light bulb's resistance