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
kkurt [141]
3 years ago
14

if a runners power is 400 watts as she runs, how much chemical energy does she convert into other forms in 10 minutes

Physics
1 answer:
AnnZ [28]3 years ago
3 0

Answer:

Energy converted = 240000\,Joules = 240\, kJoules

Explanation:

Recall that Power is the rate at which energy is transferred therefore defined by the mathematical formula: Power\,=\,\frac{Energy\,transferred}{time}

Since the information on the power of the runner is given, as well as the time the energy conversion takes place, we can then use this equation to find how much energy is been converted. Notice that we just need to change the given time *10 minutes) into the appropriate units  (seconds)to get the answer in SI units of energy (Joules). The conversion of 10 minutes into seconds is done by multiplying : 10 minutes * 60 seconds/minute = 600 seconds.

We use this then to find the energy converted by the runner:

Power\,=\,\frac{Energy\,transferred}{time}\\400 \,W = \frac{E}{600\,sec} \\400 \,W * 600\,sec=E\\E=240000\,Joules = 240\, kJoules

You might be interested in
Which are the basic physical sciences?
qaws [65]

Answer:The four main branches of physical science are astronomy, physics, chemistry, and the Earth sciences, which include meteorology and geology.

7 0
2 years ago
Read 2 more answers
If the wavelength of orange light is 6 · 10-7 m, calculate its frequency. f = _______ Hz
11Alexandr11 [23.1K]

<u>Answer:</u>

Frequency of orange light = 5 \times 10^{14} Hz

<u>Explanation:</u>

We are given the wavelength of the orange light and we are to find the value of its frequency.

Wavelength of orange light = 6.0 \times 10^{-7} m

We know that:

Speed of light = Frequency of orange light × Wavelength of orange light

Substituting the values in the above formula:

3 \times 10^8 = Frequency of orange light × 6.0\times10^{-7}

Frequency of orange light = \frac{3 \times 10^8}{6\times10^{-7}} =5 \times 10^{14} Hz

6 0
3 years ago
What is the relationship between the angle of incidence and the angle of refraction when light passes from a medium where its sp
Bogdan [553]

Answer:

This is because the speed of a wave is determined by the medium through which it is passing. When light speeds up as it passes from one material to another, the angle of refraction is bigger than the angle of incidence. For example, this happens when light passes from water to air or from glass to water ❤

5 0
2 years ago
A man standing on a bus remains still when the bus is at rest. When the bus moves forward and then slows down the man continues
Stells [14]
C. inertia.  the man is sent flying off the bus because of his weight and the sudden stop of the bus. this effect is called inertia. an example of gravity would be throwing an apple up and having it come to the ground. an example of weight would be putting a man and an elephant on a scale and having the elephant come down while the man goes up.
6 0
3 years ago
 I will mark you as brainliest if you answer correctly
aleksklad [387]
(A) We can solve the problem by using Ohm's law, which states:
V=IR
where
V is the potential difference across the electrical device
I is the current through the device
R is its resistance
For the heater coil in the problem, we know V=220 V and R=220 \Omega, therefore we can rearrange Ohm's law to find the current through the device:
I= \frac{V}{R}= \frac{220 V}{220 \Omega}=1 A

(B) The resistance of a conductive wire depends on three factors. In fact, it is given by:
R= \rho \frac{L}{A}
where
\rho is the resistivity of the material of the wire
L is the length of the wire
A is the cross-sectional area of the wire
Basically, we see that the longer the wire, the larger its resistance; and the larger the section of the wire, the smaller its resistance.
6 0
3 years ago
Other questions:
  • When you set something down on the ground what kind of work is your arm doing
    10·2 answers
  • If a 40 kg gymnast and a 400 kg sumo wrestler each dropped from 1 m above the trampoline, find the final position of each athlet
    6·1 answer
  • Hw2-2 - show all your work, including the equation, express all answers in base units, (m, m/s, m/s2), unless stated otherwise i
    5·1 answer
  • Application of pressure​
    5·1 answer
  • A gas is compressed from an initial volume of 5.65 L to a final volume of 1.24 L by an external pressure of 1.00 atm. During the
    15·1 answer
  • Drawing conclusions.
    13·2 answers
  • A5 kg box slides 3 m across the floor before coming to rest. What is the coefficient of kinetic friction between the floor and t
    5·1 answer
  • Two large parallel conducting plates are 8.0 cm apart and carry equal but opposite charges on their facing surfaces. The magnitu
    13·1 answer
  • What type of themometer would you use to take your temperature
    11·1 answer
  • In equilibrium, ________. Group of answer choices the ratio of marginal benefits to income should be identical across all goods
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!