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
Sedaia [141]
3 years ago
8

estimate the number of breaths taken by a human being during an average lifetime. (we estimate an average respiration rate of ab

out 10 breaths per minute and a typical life span of 70 years.)
Physics
1 answer:
Vinvika [58]3 years ago
8 0

Answer:

3.679 × 10^{8}

Explanation:

Let's assume that average lifespan for normal human being is 70 years.

In 70 years there are 365 days in each year.

70 years = 70 × 365 days

In one day there are 24 hours.

70 years = 70 × 365 × 24 hours

In one hour there are 60 minutes.

70 years = 70 × 365 × 24 × 60 minutes

we estimate an average respiration rate of about 10 breaths per minute. ... (Given)

Thus, for 70 years number of breath are,

n = 70 × 365 × 24 × 60 × 10

n = 3.679 × 10^{8}

Hence, estimate number of breath over a period of life is 3.679 × 10^{8}.

You might be interested in
I need help please and thanks
asambeis [7]

Answer:

c

Explanation:

6 0
2 years ago
A family car has a mass of 1400 kg. In an accident it hits a wall and goes from a speed of 27 m/s to a standstill in 1.5 seconds
horrorfan [7]

Answer:

The force has been reduced by 8018 N

Explanation:

The impulse exerted on the car during the crash is equal to the product of the force exerted and the duration of the collision, and it is also equal to the change in momentum of the car. So we can write:

F\Delta t = m\Delta v

where:

F is the force exerted on the car

\Delta t is the duration of the collision

m = 1400 kg is the mass of the car

\Delta  v=-27 m/s is the change in velocity of the car

We can re-write the equation as

F=\frac{m\Delta v}{\Delta t}

In the 1st collision, the time is 1.5 seconds, so the force is

F_1=\frac{(1400)(-27)}{1.5}=-25,200 N

In the 2nd collision, the time is increased to 2.2 seconds, so the force is

F_2=\frac{(1400)(-27)}{2.2}=-17,182 N

Therefore, the force has been reduced by:

F_2-F_1=-17,182-(-25,200)=8018 N

4 0
3 years ago
Read 2 more answers
Two protons are released from rest, with only the electrostatic force acting. Which of the following statements must be true abo
ycow [4]

Answer:

(A)

Explanation:

We know , electric potential energy between two charge particles of charges "q" and "Q" respectively is given by kqQ/r where r is the distance between them.

Since the two charged particles are moving apart, the distance between them (r) increases and thus electrical potential energy decreases.

7 0
3 years ago
PLS HELP I NEED IT
irinina [24]

Answer:

<h2>A. a spring & B. a well dried into an aquifer.</h2>

8 0
3 years ago
Read 2 more answers
Katrina is a teen from Australia who participates in curling, a sport in which players slide stones across the ice toward a targ
goldenfox [79]
Personally i would say advertising but I can also see where it could be globalization because the Olympics is about different countries coming together and having friendly competition. 
6 0
3 years ago
Read 2 more answers
Other questions:
  • Please help<br> Right answers please<br> Will mark brainliest
    14·1 answer
  • How could Trevor increase the amplitude of the motion
    7·1 answer
  • Ignoring reflection at the air-water boundary, if the amplitude of a 10 GHz incident wave in air is 20 V/m at the water surface,
    15·1 answer
  • If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it oscillates. Suppose
    12·1 answer
  • What is background radiation?
    6·1 answer
  • How would amperage and voltage affect the power of the fence
    7·1 answer
  • The brakes application to a car produce an acceleration of 6ms2 in the opposite direction to the motion .If the car takes 2 seco
    15·1 answer
  • A a healthy diet and exercise have an impact on the overall health of
    12·1 answer
  • Find the distance traveled by a particle with position (x, y) as t varies in the given time interval. x = 2 sin2(t), y = 2 cos2(
    5·1 answer
  • a car initially at rest can accelerate at 7 m/s^2 how long will it take the car to reach 60 m/s and how far will it travel durin
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!