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
lara31 [8.8K]
3 years ago
8

a system absorbs 500J of heat and at the same time 400J of work is done on the system what is change in internal energy​

Physics
1 answer:
seropon [69]3 years ago
3 0

This is the solution of the problem. The problem is calculated from a closed system energy balance equation

You might be interested in
How can weather be forecast​
Ugo [173]

Answer:

using satellite

Explanation:

mark brainliest

8 0
3 years ago
Ms. Mary Mack walked around her block from her house for 200 meters. She arrived back at her house in 15 minutes. What was her d
inysia [295]

Answer:

d = 0 [m]

Explanation:

Displacement is understood as the length and direction that a body travels to move from an initial point to an endpoint.

This displacement is represented with a vector or straight line that indicates the distance of the displacement and its length.

This displacement in an easier way to understand. It is the distance between the start point and the endpoint of the journey. Since the second point is equal to the first point, since Mary returns to the same place, there is no difference between the displacement.

Therefore the displacement is zero.

5 0
3 years ago
What is non-point source pollution, and why is this kind of pollution hard to monitor and control?
antoniya [11.8K]

The use of pesticides in farming land is example of non-point source pollution. The area of emitting of pollution is very large. That is why, it is difficult to monitor and control this type of pollution.

Americans get their water for everyday use through aquifer. Aquifers can be conserve by avoiding high amount of chemical uses and reducing household waste. Also the sustainable use of water cause conservation of natural resource.

Aquifer are basically underground water present in ground pores. The structure of aquifer just look like sponge. The water moves through the porous surfaces of the ground.

7 0
3 years ago
If a spaceship has a momentum of 30,000 kg-m/s to the right and a mass of
m_a_m_a [10]

Answer:

75m/s

Explanation:

...................

8 0
3 years ago
Some homes that use baseboard heating use copper tubing. hot water runs through and heats the copper tubing, which in turn heats
AlekseyPX
When you heat a certain substance with a difference of temperature \Delta T the heat (energy) you must give to it is
E(=Q) =mc\Delta T
where c is the specific heat of that substance (given in J/(g*Celsius))
In this case
E=645*0.3850*(28.22-13.20) =3729.8 (Joule)

Observation: the specific heat of a substance is given in J/(g*Celsius) or J/(g*Kelvin)  because on the temperature scale a difference of 1 degree Celsius = 1 degree Kelvin
7 0
3 years ago
Other questions:
  • Two​ pulleys, one with radius 2 inches and one with radius 9 inches​, are connected by a belt. If the 2-inch pulley is caused to
    5·1 answer
  • How do astronomers use rocks from the moon to estimate the age of the solar system?
    6·1 answer
  • How many hydrogen atoms are in water, H2O?
    11·1 answer
  • Hydrogen bombs and stars both produce energy with nuclear _____.
    10·1 answer
  • A person exerts a tangential force of 37.7 N on the rim of a disk-shaped merry-go-round of radius 2.75 m and mass 144 kg. If the
    10·1 answer
  • Help me pls I WILL GIVE BRAINIEST I DONT CARE PLS HELP
    6·2 answers
  • How do you think the weight and the lift should not be one of the same magnitude​
    5·1 answer
  • A star has right ascension of 5 hours. Which of these statements is correct about the star?
    6·1 answer
  • Help me frfr I don’t understand
    15·1 answer
  • You need eye drops for your dry eyes. You brought only a few dollars with you to the store. Which is the best method of choosing
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!