answer.
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
adell [148]
2 years ago
8

The δe of a system that releases 12.4 j of heat and does 4.2 j of work on the surroundings is __________ j.

Physics
1 answer:
Vedmedyk [2.9K]2 years ago
5 0

The answer for this problem is clarified through this, the system is absorbing (+). And now see that it uses that the SURROUNDINGS are doing 84 KJ of work. Any time a system is overshadowing work done on it by the surroundings the sign will be +. So it's just 12.4 KJ + 4.2 = 16.6 KJ.

You might be interested in
A lever has a 36cm input arm and a 6cm output arm. find MA.
Nady [450]

6

Explanation:

The mechanical advantage is a factor that measures how input force increases using a machine.

A lever is a simple machine with the fulcrum at the center.

To calculate the mechanical advantage M.A of levers we use the expression below;

M. A = \frac{F_{b} }{F_{a} } = \frac{a}{b}

F_{a} = input force

F_{b} = output force

a is the distance of the input force from the fulcrum

b is the distance of the output force from the fulcrum

Given

a = 36cm

b = 6cm

M.A = \frac{36cm}{6cm} = 6

learn more:

Torque brainly.com/question/5352966

#learnwithBrainly

6 0
2 years ago
If Earth were twice as far from the sun, the force of gravity attracting the Earth to the Sun would be
zalisa [80]
If Earth was twice as far from the sun, the force of gravity attracting the Earth to the sun would be only one-quarter as strong. The correct answer will be C. 
6 0
2 years ago
Read 2 more answers
How much heat is released when 432 g of water cools down from 71'c to 18'c?
maria [59]
The heat released by the water when it cools down by a temperature difference \Delta T is
Q=mC_s \Delta T
where
m=432 g is the mass of the water
C_s = 4.18 J/g^{\circ}C is the specific heat capacity of water
\Delta T =71^{\circ}C-18^{\circ}C=53^{\circ} is the decrease of temperature of the water

Plugging the numbers into the equation, we find
Q=(432 g)(4.18 J/g^{\circ}C)(53^{\circ}C)=9.57 \cdot 10^4 J
and this is the amount of heat released by the water.
7 0
2 years ago
A 0.45 Caliber bullet (m = 0.162 kg) leaving the muzzle of a gun at 860
Charra [1.4K]

Answer:139.32kgm/s

Explanation:

Mass(m)=0.162kg

Velocity(v)=860m/s

Momentum=mass x velocity

Momentum=0.162 x 860

Momentum=139.32kgm/s

3 0
1 year ago
the grid in a triode is kept negatively charged to prevent… a. the variations in voltage from getting too large. b. electrons be
Nezavi [6.7K]
D:the electrons from being attracted to the grid instead of the anode
5 0
1 year ago
Read 2 more answers
Other questions:
  • Shutting the fluid discharge of an air-operated reciprocating pump will cause the pump to ?
    9·2 answers
  • The wavelength of the sound is 0.750m. What is the frequency?
    5·1 answer
  • A ray diagram is shown. Which statement best describes the diagram?
    6·1 answer
  • Takumi works in his yard for 45 minutes each Saturday. He works in the morning, and he wears sunscreen and a hat each time he wo
    12·2 answers
  • One of the dangers of tornados and hurricanes is the rapid drop in air pressure that is associated with such storms. Assume that
    6·1 answer
  • A boat of mass 250 kg is coasting, with its engine in neutral, through the water at speed 1.00 m/s when it starts to rain with i
    10·1 answer
  • In 2016 there were 2025 reported collisions between trains and cars that’s resulted in 265 fatalities. Explain the change in kin
    10·1 answer
  • Xander's friend Corey has a skateboard that he rides at Newton's Skate Park.
    15·1 answer
  • Find the work done in pumping gasoline that weighs 6600 newtons per cubic meter. A cylindrical gasoline tank 3 meters in diamete
    7·1 answer
  • A person is nearsighted with a far point of 75.0 cm. a. What focal length contact lens is needed to give him normal vision
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!