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
laiz [17]
3 years ago
10

A sample of gas in a syringe releases heat to its surroundings while the

Physics
2 answers:
Agata [3.3K]3 years ago
4 0

The answer is D.

-Q +W

blsea [12.9K]3 years ago
3 0

Answer: b

Explanation:

When heat is released by the system i.e. system loses heat. So, we take it as negative -Q

When the work is done on the system then it is considered as negative work on the system i.e. -W  

In this case, the plunger is pulled out, and work is done on the system. So, we take work as negative work -W

Correct option is b

You might be interested in
A large heavy truck smashes into a brick wall totally crumpling the front end. what is the conclusion of this description
Oduvanchick [21]
The person driving the truck was killed
the wall was destroyed
8 0
3 years ago
Why doesn't electric current flow through rubber?
PolarNik [594]
Rubber is a insulator so current cannot pass through it where as metal is a conductor which allows current to pass through it
5 0
3 years ago
Read 2 more answers
A 2.0-kg ball rolls to the right at 3.0 m/s. A 4.0-kg ball rolls to the left at 2.0 m/s . What is the momentum of the system aft
charle [14.2K]

Answer:

Final momentum after a head on collision is -2kgm/s

Explanation:

         One ball moves to the right and the other moves opposite  and momentum is a vector quantity so that considering the direction

Initial momenta are        P₁=2x3=6kgm/s        P₂=4x(-2)=-8kgm/s      

Final momentum is the vector sum of P(final)= 6-8= -2 kgm/s

4 0
3 years ago
A satellite, orbiting the earth at the equator at an altitude of 400 km, has an antenna that can be modeled as a 1.76-m-long rod
ivann1987 [24]

Answer:

The inducerd emf is 1.08 V

Solution:

As per the question:

Altitude of the satellite, H = 400 km

Length of the antenna, l = 1.76 m

Magnetic field, B = 8.0\times 10^{- 5}\ T

Now,

When a conducting rod moves in a uniform magnetic field linearly with velocity, v, then the potential difference due to its motion is given by:

e = - l(vec{v}\times \vec{B})

Here, velocity v is perpendicular to the rod

Thus

e = lvB           (1)

For the orbital velocity of the satellite at an altitude, H:

v = \sqrt{\frac{Gm_{E}}{R_{E}} + H}

where

G = Gravitational constant

m_{e} = 5.972\times 10^{24}\ kg = mass of earth

R_{E} = 6371\ km = radius of earth

v = \sqrt{\frac{6.67\times 10^{- 11}\times 5.972\times 10^{24}}{6371\times 1000 + 400\times 1000} = 7670.018\ m/s

Using this value value in eqn (1):

e = 1.76\times 7670.018\times 8.0\times 10^{- 5} = 1.08\ V

5 0
3 years ago
A 200 kg roller coaster car is located at the top of a hill where the height is 30 m. What is the velocity when it reaches the b
Makovka662 [10]

Answer: 24.2

Explanation:

8 0
3 years ago
Other questions:
  • You find it takes 200 N of horizontal force tomove an unloaded pickup truck along a level road at a speed of2.4 m/s. You then lo
    10·1 answer
  • SP1a.<br> What is the average velocity of a car that travels 30 kilometers due west in 0.50 hour?
    11·1 answer
  • A vertically hung spring has a spring constant of 150. newtons per meter. A
    10·1 answer
  • If you lose control of your vehicle and collide with a fixed object, such as a tree, at 60 m.p.h., the force of impact is the sa
    14·1 answer
  • As demonstrated by the Doppler Effect, why does sound increase in pitch as a sound source approaches you?
    15·2 answers
  • A cross-country skier moves 36 meters eastward, then 44
    7·1 answer
  • Sound is a mechanical wave; therefore, it __________.
    13·2 answers
  • The 360-turn primary coil of a step-down transformer is connected to an ac line that is 120 V (rms). The secondary coil is to su
    12·1 answer
  • Why would an older house have more safety risks then a newer house
    15·2 answers
  • Please help me!!!!!!!!!!!!!!!​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!