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
77julia77 [94]
3 years ago
8

If energy is conserved, why do people get tired , and why are we running short on “energy supplies?”

Physics
1 answer:
andre [41]3 years ago
3 0
Because energy is being consumed. It takes energy to lift things, walk around, etc. We are transferring our chemical energy from meals to our environment and basic functions. The answer to the second part is probably that so much energy has been transferred and stored in our surroundings, and it's difficult to gather that energy into a useful medium for us to use again.
You might be interested in
Mains electricity is an ac supply. Explain the difference between direct and alternating potential difference.
Gennadij [26K]

Direct current (DC) is the flow of electric charge in only one direction. It is the steady state of a constant-voltage circuit. Most well-known applications, however, use a time-varying voltage source. Alternating current (AC) is the flow of electric charge that periodically reverses direction.

<h2><em>#</em><em>L</em><em>E</em><em>T</em><em>S</em><em> </em><em>STUDY</em></h2>

5 0
2 years ago
Which of the following has zero acceleration? an object...
tangare [24]

Answer:

B object at rest

Explanation:

object at rest means it wouldn't be moving, like a parked car or sleeping person therefore, B is the correct answer

8 0
2 years ago
Plz someone help me Asap​
-Dominant- [34]

Answer:

all I know is C

are there more questions? anyone?

-KARL IS STOOPID

Explanation:

6 0
3 years ago
Except for the nodes on a standing wave, what is the frequency f of the points executing simple harmonic motion?
Katen [24]

Take into account that in a standing wave, the frequency f of the points executing simple harmonic motion, is simply a multiple of the fundamental harmonic fo, that is:

f = n·fo

where n is an integer and fo is the first harmonic or fundamental.

fo is given by the length L of a string, in the following way:

fo = v/λ = v/(L/2) = 2v/L

becasue in the fundamental harmonic, the length of th string coincides with one hal of the wavelength of the wave.

6 0
1 year ago
Out of aluminum,copper,steel,and glass.Which material do you think will be the best thermal conductor?
Nastasia [14]
I believe it is copper

6 0
3 years ago
Other questions:
  • Your annoying little brother is dropping rocks out of his bedroom window on the 2nd floor. You are on the ground floor and watch
    11·1 answer
  • A certain 100W light bulb has an efficiency of 95%. How much thermal energy will this light bulb add to the inside of a room in
    12·1 answer
  • A stuntman of mass 55 kg is to be launched horizontally out of a spring-
    7·1 answer
  • a ball weighing 100 n is shown suspended from a system of cords. what is the tension in the horizontal and angled cords at 50 de
    12·1 answer
  • An automobile tire is filled with air at a pressure of 27.0 lb/in2 at 25°C. A cold front moves through and the temperature drops
    14·1 answer
  • True or False? In the quark era, it was so hot that matter and
    9·1 answer
  • Is 250 g higher than 100 g in science
    8·2 answers
  • Suppose the Helmholtz coil in this experiment is arranged to produce a magnetic field that points east. The current through the
    5·1 answer
  • Helicopters rotor blades, could spin at high speed of 510 rpm. Find the angular displacement in radian for 3 hour(s) operation
    7·1 answer
  • When two identical resistors are connected in series across ideal battery, total power dissipated by them is P. Now both are con
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!