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
Furkat [3]
3 years ago
12

A doctor counts 68 heartbeats in 1.0 minute. What are the corresponding period and frequency of the heart rhythm

Physics
1 answer:
sergejj [24]3 years ago
8 0

Answer:

f=1.13s^{-1}=1.13Hz

Explanation:

Hello,

In this case, a frequency stands for a rate in which some action is done per unit of time. In this case, for the heartbeat, since 68 actions (heartbeats) occur in 1.0, the frequency turns out:

f=\frac{68}{1.0min}=68min^{-1}

Or as most commonly used in Hz (s^{-1}):

f=68\frac{1}{min} *\frac{1min}{60s}=1.13s^{-1}=1.13Hz

Best regards.

You might be interested in
Is it possible for a circuit to be connected both in series and in parallel?
marshall27 [118]
Hello There!

Well, technically no. It has to be one or the other, it can't be both.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
4 0
3 years ago
One litre of crude oil weighs 9.6N. Calculate its specific weight, density and specific gravity.​
Zepler [3.9K]

Answer:

The answer is "\bold{9600 \frac{N}{m^3}, 978.59 \frac{kg}{m^3}, and \ 0.978}"

Explanation:

Given:

\to v=1\ liter= 10^{-3} \ m^3\\\\\to  w= 9.6 \ N\\

calculation:

Specific \ weight =\frac{w}{v}=\frac{9.6}{10^{-3}}=9600 \frac{N}{m^3} \\\\w=mg\\\\m= \frac{w}{g}=\frac{9.6}{9.81}=0.9785\ kg\\\\\rho\ (density)=\frac{m}{v}=\frac{0.9785}{10^{-3}}=978.59 \frac{kg}{m^3}\\\\specific \ gravity = \frac{\prho \ obj}{\rho w}=\frac{978.54}{1000}=0.978

4 0
2 years ago
A block-and-tackle pulley hoist is suspended in a warehouse by ropes of lengths 2 m and 3 m. the hoist weighs 430 n. the ropes,
ICE Princess25 [194]
Refer to the diagram shown below.

For horizontal equilibrium,
T₃ cos38 = T₂ cos 50
0.788 T₃ = 0.6428 T₂
T₃ = 0.8157 T₂                (1)

For vertical equilibrium,
T₂ sin 50 + T₃ sin 38 = 430
0.766 T₂ + 0.6157 T₃ = 430
1.2441 T₂ + T₃ = 698.392        (2)

Substitute (1) into (2).
(1.2441 + 0.8157) T₂ = 698.392
T₂ = 339.058 N
T₃ = 0.8157(399.058) = 276.571 N

Answer:
T₂ = 339.06 N
T₃ = 276.57 N

7 0
2 years ago
Which of the following is a derived unit?<br><br> ampere<br> newton<br> second<br> kilogram
Soloha48 [4]

Newton is your answer.

ampere, second, kilograms, are all base units.

hope this helps

5 0
2 years ago
A sound wave can cause the particles in a medium to vibrate slowly or quickly what is this rate of vibration called?
stealth61 [152]

Answer:

FREQUENCY

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Gasoline burns in the cylinder of an automobile engine. During the combustion reaction, the production of gas forces the piston
    10·1 answer
  • A woman who weighs 500 N stands on an 8.0-m-long board that weighs 100 N. The board is supported at each end. The support force
    5·1 answer
  • What is the pathway of sound through fluids starting at the oval window through to dissipation of the sound waves at the round w
    7·1 answer
  • Could magnets absorb electricity?
    14·2 answers
  • Average speed is the total distance divided by the
    8·1 answer
  • A watt is a unit of<br><br>light<br>power<br>force<br>motion<br>energy
    6·1 answer
  • In the following diagram, the voltage is 1.5 volts and the resistance is 3.0 ohms. Use Ohm's law to determine the current in the
    13·2 answers
  • What are two characteristics of transverse waves that are not found in longitudinal waves
    7·1 answer
  • Which of these best describes the relationship between the incident ray, the reflected ray, and the normal for a curved mirror?(
    12·1 answer
  • The thermal energy of what system does change
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!