The capacitor is changed so that the largest possible current is supplied by the source.
Enter the value of the capacitive reactance when this change is made.
Give your answer in Ohms (Ω). A unit is not required with your answer.
The circuit is powered by...
When the defibrillation shock is applied, the capacitor discharges through the patient as shown in the diagram below:
The fraction of charge remaining on the capacitor 1.00 ms after it begins discharging is 0.300.
Calculate the resistance of the patient. Note: This will...
Defibrillation[/B] is a common treatment for life-threatening cardiac arrhythmias and ventricular fibrillation. The defibrillator applies a current across the heart (shown by the red arrows in the image below) for a short time (a few milliseconds), disrupting the arrhythmia...
Calculate the net charge on a magnesium ion which has lost two electrons.
2. The attempt at a solution
I put 2+ as my answer and this is what I was told, but I don't understand what they mean by the following;
That's a chemist's shorthand, not the amount of charge on the...
You look at yourself in a shiny Christmas tree ball, which has a diameter of 9.63 cm. If your face is 7.81 cm away from the shiny ball, calculate the image distance.
Thinking I would use
magnification = di/d0
di = 0.0781m
d0 = 0.0963m
The Attempt at...
Suppose that you want to take a mirror selfie, standing 3.05 m in front of a plane mirror.
Calculate the distance that the camera will focus to, to get a clearly focused image of your beautiful self.
d0 = di
The Attempt at a Solution
Would I be correct...
A depth sounder on a ship measures the distance between the bottom of the ship and the seabed using a high-frequency pulse of sound (sonar stands for SOund Navigation And Ranging). Sound travels through water at 1.48 km/s.
Calculate the distance to the seabed if the...
A radio transmitter is located 17.5 km away. The broadcast signals travel at the speed of light (c = 3.00 x 108 m.s-1) through the air towards a radio receiver.
Calculate the time it takes the radio signal to travel from the transmitter to the receiver.
A careless farmer sends this sheep out to graze on a very cold winter day when the temperature is -10oC. The sheep's coat has a thickness of 4.7 cm and a surface area 1.3 m2.
Calculate the rate of heat loss from the sheep on this cold day. Assume that heat is lost only...
Calculate the speed of the block in SHM as it moves through equilibrium position.
k= 45.08248265 N/m
m of block = 0.505kg
T = 0.665s
w= the square root of (k/m) ???
The Attempt at a Solution
w = the square root of (45.08248265/0.505)
A freshly-forged iron horseshoe, with a mass of 0.549 kg is dropped into a 0.281 kg iron pot which contains 1.60 kg of water at 21.4 oC.
After the horseshoe, pot and water reach thermal equilibrium they have a temperature of 29.8 oC.
Assuming the pot and the water were in...
A 77.1 kg hiker uses 191 kcal hr-1 (converted to 222.133 J.s ????) of energy whilst hiking. Assuming that 20% of this energy goes into useful work and the other 80% is converted to heat within the body, calculate the temperature change, in units of Kelvin (K), of the hiker's...