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
nalin [4]
3 years ago
9

An engine is designed to obtain energy from the temperature gradient of the ocean. What is the thermodynamic efficiency of such

an engine if the temperature of the surface of the water is 59°F (15°C) and the temperature well below the surface is 41°F (5°C)
Physics
1 answer:
rewona [7]3 years ago
6 0

Answer:

0.035 (3.5 %)

Explanation:

The thermodynamic efficiency is given by:

\eta = 1 - \frac{T_C}{T_H}

where

T_C is the cold temperature

T_H is the hot temperature

In this problem we have

T_C = 5 ^{\circ}C+ 273 = 278 KT_H = 15^{\circ}C+273 = 288 K

So the efficiency is

\eta = 1 - \frac{278 K}{288 K}=0.035

You might be interested in
Why can a bowling ball do work
Karo-lina-s [1.5K]

it cant beacuse its not a person

8 0
3 years ago
An electron is held at a distance from a stationary, positively charged object.
salantis [7]

Answer:

A. Electric potential energy into kinetic energy

Explanation:

The electric potential energy of the charged particles is converted into kinetic energy as the electron is released.

5 0
3 years ago
Read 2 more answers
deon is running at a velocity of 7.9 meters per second. deon has a total mass of 95 kilograms including his helmet, uniform, pad
brilliants [131]

Answer:

712.5 kg m/s

Explanation:

Work out the total momentum before the event (before the collision):

p = m × v

Massof Deon = 95kg

Velocity =7.5m/s

Mass of Chuck = 120kg

Velocity = 0m/s

Momentum of Deon before = 95 × 7.5 = 712.5 kg m/s

Momentum of Chuck before = 120 × 0 = 0 kg m/s

Total momentum before = 712.5+ 0 = 712.5 kg m/s

Working out the total momentum after the event (after the collision):

Because momentum is conserved, total momentum afterwards = 712.5 kg m/s

6 0
4 years ago
An object of mass m travelling at velocity u collides with an identical stationary object of mass m. After collision, both objec
frutty [35]
Hope this helps! If in need of clarification, feel free to ask :)

6 0
4 years ago
15. Using 3 – 4 sentences, explain, in your own words, two ways you could cause an electrical current using only a wire and a ho
never [62]
An electric current will start to form when a part of the wire is within a magnetic field. Using the magnet you could put the whole wire into the magnetic field of the magnet and move it across the magnet so that a current starts to run.

Another way you could do it is to make the wire so that it looks like a coil and stick the magnet in the middle of the coil of wire. This will cause an induced current in the coil of wire.
5 0
3 years ago
Other questions:
  • 1. Is the sequence geometric? If so, identify the common ratio.
    7·1 answer
  • What does a notational analyst do
    5·2 answers
  • Describe factors than can make dishes in restaurants have variable nutritional values
    8·1 answer
  • The distance from the sun to the Earth is 1.5 x 1011 m. How long does it take for light from the sun to reach the earth? Give yo
    7·2 answers
  • What type of system allows matter and energy to enter and exit?
    9·1 answer
  • 1. Study the map. What do you think divergent boundary means ? What about convergent boundary ?
    6·1 answer
  • Ground reaction force acting on carter
    12·1 answer
  • The viscosities of several liquids are being compared. All the liquids are poured down a slope with equal path lengths. The liqu
    11·1 answer
  • HELP PLEASE I NEED ANSWER ASAP!!! THANK YOU (ps sorry if i put the wrong subject)
    13·2 answers
  • A wire long and with mass is positioned horizontally near the earth's surface and perpendicular to a horizontal magnetic field o
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!