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
RoseWind [281]
3 years ago
10

A person is in a room whose walls are maintained at a temperature of 17 °C. The temperature of the person’s skin is 32 °C. The s

urface area of the person’s skin is 1.4 m2. Determine the netheat transfer rate leaving the person.
Physics
1 answer:
lbvjy [14]3 years ago
4 0

Answer:

sned me short notes of Physics of all branches (post graduation level) thanks  

+923466867221

Explanation:

You might be interested in
A fire engine is moving south at 35 m/s while blowing its siren at a frequency of 400 Hz.
vodomira [7]

To solve this problem we will apply the concepts related to the Doppler effect. The Doppler effect is the change in the perceived frequency of any wave movement when the emitter, or focus of waves, and the receiver, or observer, move relative to each other. Mathematically it can be described as

f_d= f_s \frac{(v+v_d)}{(v-v_s)}

Here,

f_d=frequency received by detector

f_s=frequency of wave emitted by source

v_d=velocity of detector

v_s=velocity of source

v=velocity of sound wave

Replacing we have that,

f_d = 400(\frac{(343+18)}{(343-35)})

f_d=422 Hz

Therefore the frequencty that will hear the passengers is 422Hz

8 0
3 years ago
Determine the torque<br> produced by a perpendicular force of 75<br> N at the end of a 0.2 m wrench.
trasher [3.6K]

Answer:c

Explanation:

Because I took uty

7 0
3 years ago
Read 2 more answers
A sphere of mass of 1.55 kg is accelerated upwards by a string to which the sphere is attached. Its speed increases from 2.81 m/
Mama L [17]

Answer:

The tension in the string is 16.24 N

Explanation:

Given;

mass of the sphere, m = 1.55 kg

initial velocity of the sphere, u = 2.81 m/s

final velocity of the sphere, v = 4.60 m/s

duration of change in the velocity, Δt = 2.64 s

The tension of the string is calculated as follows;

T =  ma  + mg\\\\T = m(a + g)\\\\where;\\\\a \ is \ upward \ acceleration \ of \ the \ sphere\\\\g \ is \ acceleration \ due \ to \ gravity =9.8 \ m/s^2\\\\a = \frac{\Delta V}{\Delta t} = \frac{v- u}{ t} = \frac{4.6 - 2.81 }{2.64} = 0.678 \ m/s^2

T = 1.55(0.678 + 9.8)

T = 1.55(10.478)

T = 16.24 N

Therefore, the tension in the string is 16.24 N

5 0
3 years ago
Which subgenre would include stories about talking animals or magical powers? Image result for fable animal O fable O realistic
Furkat [3]

Answer:

fable

Explanation:

8 0
3 years ago
Which item is made from an alloy?<br> steel tray<br> glass plate<br> credit card <br> copper wire
SashulF [63]
Steel tray because steel is an iron-carbon alloy

5 0
3 years ago
Other questions:
  • When 10.00 ml of 1.00 m hcl solution is mixed with 115 ml of 0.100 m naoh solution in a constant-pressure calorimeter, the tempe
    5·2 answers
  • A ball is launched from ground level and hits the ground again after an elapsed time of 4 seconds and after traveling a horizont
    5·1 answer
  • What is the difference between scientific law and scientific theory
    7·2 answers
  • As populations in North America grow, so does the need for wood to build houses, stores, and other buildings. Select the stateme
    9·1 answer
  • Bob runs 1800 seconds at an average speed of 1.5 m/sec. How far did he go? 25 Points!!!!
    15·1 answer
  • Someone please help me
    9·2 answers
  • You hear 2 beats per second when two sound sources, both at rest, play simultaneously. The beats disappear if source 2 moves tow
    10·1 answer
  • A cylindrical metal rod has a resistance . If both its length and its diameter are quadrupled, its new resistance will be:______
    14·1 answer
  • A 2.0-kg laptop sits on the horizontal surface of the seat of a car moving at 8.0 m/s. The driver starts slowing down to stop. F
    9·1 answer
  • if the intensity of a person's voice is 4.6 x 10^-7 w/m^2 at a distance of 2.0 m, how much sound power does that person generate
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!