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Question: The number of kilocalories in food is determined by calorimetric techniques in which the food is burned and the amount of heat transfer is measured. How many kilocalories per gram are there in a 3.99-gram macadamia nut if the energy from burning it is transferred to 0.460 kg of water held in a .094 kg aluminum cup, causing a 58.9 degree Celsius temperature increase?
1- If a serving of macadamia nut consists of 18 g, how many kcal is consumed per serving?
I want you to explain the physics in this question.
The drawing shows two positive charges q1 and q2 fixed to a circle. At the center of the circle they produce a net electric field that is directed upward along the vertical axis. Decide the ratio q2/q1.
What is the potential difference
A solid cylinder is mounted above the ground with its axis of rotation oriented horizontally. Determine how many revolutions does the cylinder make in 5 s
a particle of mass 110-5 kg has a negative charge of -10 c. it moves in a clockwise circular pattern of radius 2m at a
The molecular mass of helium is 4 g/mol, the Boltzmann's constant is 1.38066 × 10?23 J/K, the universal gas constant is 8.31451 J/K · mol, What is the average kinetic energy of each helium atom
How far must the spring be compressed. A small remote-control car with a mass of 1.62 moves at a constant speed of = 12.0 in a vertical circle inside a hollow metal cylinder that has a radius of 5.
a glider of 500 gr. is 10 cm. above the table at the beginning of its motion and 6 cm. above the table at the end. what is the theoretical value of kinetic energy at the bottom
A wire runs through a 0.7 T magnetic field as shown. The dashed lines represent the magnetic field, and the solid black line the wire. What is the magnitude of the current through the wire
a carnival ride consists of a vertical cylindar, radius 2 m. When it revolves it pins people to its walls, What is the required period of revolution
Two loudspeakers face each other, vibrate in phase, and produceidentical 441-Hz tones. What is the walking speed
A car starts from rest and accelerates at a rate of 2m/s^2 until it reaches the speed fo 30m/s. find number of revolution each wheel completes up to this point
a car starts from rest on a curve with a radius of 180 and accelerates at 1.80 . how many revolutions will the car have
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