1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Veronika [31]
3 years ago
8

A defibrillator is a device used to shock the heart back to normal beat patterns. To do this, it discharges a 15 μF capacitor th

rough paddles placed on the skin, causing charge to flow through the heart. Assume that the capacitor is originally charged with 5.0 kV .
Part A

What is the charge initially stored on the capacitor?

a. 3×10−9 C
b. 7.5×104 C
c. 7.5×10−2 C
d. 7.5×10−5 C

Part B

What is the energy stored on the capacitor?

a. 1.9×108 J
b. 380 J
c. 190 J
d. 1.9×10−4 J

Part C

If the resistance between the two paddles is 100 Ω when the paddles are placed on the skin of the patient, how much current ideally flows through the patient when the capacitor starts to discharge?

a. 5×105 A
b. 50 A
c. 2×10−2 A
d. 5×10−2 A

Part D

If a defibrillator passes 17 A of current through a person in 90 μs . During this time, how much charge moves through the patient?

If a defibrillator passes 17 {\rm A} of current through a person in 90 {\rm \mu s} . During this time, how much charge moves through the patient?

a. 190 mC
b. 1.5 C
c. 1.5 mC
d. 17 C
Physics
1 answer:
Mama L [17]3 years ago
5 0

Answer:

Part A: Q = 0.075C

Part B: E = 187.5J

Part C: I = 50A

Part D: ΔQ 1.53C

Explanation:

Part A

Q = C×V

Given

C = 15μF = 15×10‐⁶ F, V = 5kV = 5000V

Q = 15×10‐⁶× 5000 = 0.075C

Part B

Energy = E = 1/2 ×CV² = 1/2 × 15×10‐⁶ × 5000² = 187.5J

Part C

Given R = 100Ω

V = IR, I = V/R = 5000/100 = 50A

Part D

I = ΔQ/Δt

Given Δt= 90ms = 90×10-³s, I = 17A

ΔQ = I × Δt = 17×90×10-³ = 1.53 C

You might be interested in
The winter solstice, the shortest day of the year in the Northern hemisphere, occurs when the Earth is in which position?
Alexus [3.1K]

Answer:

A

Explanation:

7 0
3 years ago
If a car travels 600m west in 25 seconds, what is its velocity?
Elena L [17]

v =  \frac{ \:the covered distance}{time} \\

v =  \frac{600}{25} =  \frac{6 \times 100}{25} = 6 \times 4 = 24 \:  \\

v = 24 \:  \frac{m}{s} \\

_________________________________

If west means the west of the axis x the velocity equal :

- 24 \:  \frac{m}{s} \\

4 0
3 years ago
Match each term with the appropriate definition​
tatiyna

Answer:

opaque = 4

malleable = 3

ductile = 2

lustrous (or whatever the bottom word is) = 1

6 0
3 years ago
What is the answer? Explain best and I will mark brainliest!
iVinArrow [24]
I would say B because it is near the ocean which can cause a tsunami but also because of the wind coming from the ocean (it might cause hurricanes and lots of storms) I’m not sure though but that’s what I think makes sense. Good Luck!
5 0
3 years ago
Read 2 more answers
4. A trolley of mass 2kg rests next to a trolley of mass 3 kg on a flat
nydimaria [60]

Answer:

a. The total momentum of the trolleys which are at rest before the separation is zero

b. The total momentum of the trolleys after separation is zero

c. The momentum of the 2 kg trolley after separation is 12 kg·m/s

d. The momentum of the 3 kg trolley is -12 kg·m/s

e. The velocity of the 3 kg trolley = -4 m/s

Explanation:

a. The total momentum of the trolleys which are at rest before the separation is zero

b. By the principle of the conservation of linear momentum, the total momentum of the trolleys after separation = The total momentum of the trolleys before separation = 0

c. The momentum of the 2 kg trolley after separation = Mass × Velocity = 2 kg × 6 m/s = 12 kg·m/s

d. Given that the total momentum of the trolleys after separation is zero, the momentum of the 3 kg trolley is equal and opposite to the momentum of the 2 kg trolley = -12 kg·m/s

e. The momentum of the 3 kg trolley = Mass of the 3 kg Trolley × Velocity of the 3 kg trolley

∴ The momentum of the 3 kg trolley = 3 kg × Velocity of the 3 kg trolley = -12 kg·m/s

The velocity of the 3 kg trolley = -12 kg·m/s/(3 kg) = -4 m/s

3 0
3 years ago
Other questions:
  • 22. A race car accelerates from 0.0 m/s to 5 m/s with a displacement of 2.5 m. What is the
    15·1 answer
  • Please please help i have to turn in
    15·1 answer
  • Who were Socrates and Plato
    8·2 answers
  • An object is placed so that the image formed is a real image of the same size as the object. What is the position of the object?
    7·1 answer
  • Multiply the number 4.48E-8 by 5.2E-4 using Google. What is the correct answer in scientific notation?
    8·1 answer
  • How does a Freebody diagram tell you about the net force an object?
    9·1 answer
  • Give the method of heat transfer and give it application in a thermoflask​
    11·2 answers
  • A balloon will stick to a wooden wall if the balloon is charged
    5·1 answer
  • When starting a foot race, a 64 kilogram sprinter exerts an average force of 693 newtons backward on the ground for 0.59 seconds
    14·1 answer
  • A 1,103 kg car traveling at 18 m/s to the south collides with a 4,919 kg truck that is initially at rest at a stoplight. The car
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!