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
NARA [144]
3 years ago
11

A system initially has an internal energy U of 504 J. It undergoes a process during which it releases 111 J of heat energy to th

e surroundings, and does work of 222 J. What is the final energy of the system, in J?
Physics
1 answer:
Likurg_2 [28]3 years ago
6 0

Answer:

615 J

Explanation:

internal energy (U) = 504 J

heat lost (q) = 111 J = - 111 J (negative sign is because heat is lost)

work done = 222 J

what is the final energy in the system

total energy = final energy - initial energy

final energy = total energy + initial energy

where

initial energy = 504 J

total energy = 222 - 111 = 111 J

final energy = 504 + 111 = 615 J

You might be interested in
How much work is done in holding a 10 newton sack of potatoes while waiting in line at the grocery store for 3 minutes.​
hodyreva [135]

Answer:

Zero

Explanation:

W = F × s

F = 10 N,

t = 3min = 180sec

s = 0( no change in postion)

W = 10 ×0

W = 0

4 0
3 years ago
What are the differences and relationships between speed, velocity, and acceleration
melamori03 [73]

Velocity is the rate of change of position with respect to time, whereas acceleration is the rate of change of velocity. Both are vector quantities (and so also have a specified direction), but the units of velocity are meters per second while the units of acceleration are meters per second squared.

3 0
3 years ago
When an automobile moves with constant speed down a highway, most of the power developed by the engine is used to compensate for
uysha [10]

Answer:

F=5449 N

Explanation:

Work done is a product of force and displacement ie

Work done, W, = Force*Displacement

Power, P, is Work done/Time

P=\frac {W}{t}=\frac {FS}{t} where P is power, W is work done, F is force, S is displacement and t is time

In this case, F is the frictional force. Converting the power from hp to W, we multiply by 746 hence P=746*168=125328  W

Since displacement/time is velocity, then

P=FV where V is velocity in m/s

Making F the subject

F=\frac {P}{V}

F=\frac {125328}{23}=5449.043478  N

F=5449 N

7 0
3 years ago
If it takes you 20 joules of work to move a couch 10 meters in 10 seconds, what is the power?
Debora [2.8K]

Answer:

Power = 2 j/s

Explanation:

Power = Work / Time

= 20/10

= 2 j/s

4 0
2 years ago
at energy can be described by equations. Kinetic energy depends on both mass and velocity, which of following would have the mos
lions [1.4K]
Here for the pointssssssss
6 0
3 years ago
Other questions:
  • When responding to sound, the human eardrum vibrates about its equilibrium position. suppose an eardrum is vibrating with an amp
    5·1 answer
  • You have two identical pure silver ingots. You place one of them in a glass of water and observe it to sink to the bottom. You p
    6·1 answer
  • considere que o calor específico de um material presente nas cinzas seja c=0,8j/gc. Supondo que esse material entre na turbina a
    7·1 answer
  • Can you see an apple in the dark?
    10·1 answer
  • The electric force between electric charges is much larger than the gravitational force between the charges. Why, then, is the g
    14·1 answer
  • It has been suggested that rotating cylinders about 9 mi long and 5.9 mi in diameter be placed in space and used as colonies. Wh
    7·1 answer
  • The force it would take to accelerate a 900-kg car at a rate of 3 m/s2 is
    10·2 answers
  • A 100 Ω resistor is connected in series with a 47 µF capacitor and a source whose maximum voltage is 5 V, operating at 100.0 Hz.
    8·1 answer
  • As compared to developing countries, developed countries have a
    9·1 answer
  • Identify the ways in which carbon is added to the atmosphere?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!