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Will burns a o.6-g peanut beneath50 g of water, which increases in temperature from 22° C to 50° C.
A) assuming 40% efficiency, what is the food value, in calories, ofthe peanut?
B) what is the food value in calories per gram?
What is the voltage as a function of time accross a capacitor C connected in a single series loop with a resistor R, By what phase angle does current lead voltage
A roller coaster is traveling at 5 m/s at the top of a hill 40 m above the ground. What is the speed of the roller coaster when it is 15 m above the ground
The rms current in an ac circuit with a resistance of 140 is 0.88 A. What is the average power consumed by this circuit
A solid metal sphere with radius 0.590m carries a net charge of 0.300 nC. Find the magnitude of the electric field ata point 0.100 m outside the surface of the sphere.
A ray of light is traveling in a glass cube that is totally immersed in water. What is the refractive index of the glass
A child of mass 47 kg jumps onto the edge of a merry-go-round of mass 155 kg and radius 1.7 m that is initially at rest, What is the angular velocity of the merry-go-round plus child after the child jumps onto the merry-go-round
if 5 capacitors each of 5 micro F are connected in series with 4 capacitors each of 4 uF capacitances in parallel. what is the the net capacitance
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. The intensity level of these sounds can reach 97 dB, measured a distance of 6.0 m from the source.
A 2.3kg cart is rolling across a frictionless, horizontal track toward a 1.5kg cart that is held initially at rest. find the velocity of the first cart when the second cart was still at rest
Find the magnitude and direction of the force on a proton at x = -3.2 m, y = 0.9 m.
You find an unlabeled box of fine needles, and want to determine how thick they are. What is the diameter of the needle
A player bounces a basketball on the floor, compressing it to 80.0 of its original volume. The air (assume it is essentially gas) inside the ball is originally at a temperature of 20.0 and a pressure of 2.00 atm. The ball's diameter is 23.9 .
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