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
Vlad [161]
3 years ago
5

Two objects are maintained at constant temperatures, one hot and one cold. Two identical bars can be attached end to end, as in

part a of the drawing, or one on top of the other, as in part b. When either of these arrangements is placed between the hot and the cold objects for the same amount of time, heat Q flows from left to right. Find the ratio Qa/Qb.
Physics
1 answer:
irina1246 [14]3 years ago
7 0

Answer:

Qa/Qb = k/2×2k = 1/4

Explanation:

a situation is series and b situation is parallel.

let conductance of each plate = k

so net conductance in series = k/2

net conductance in parallel = 2k

so Qa/Qb = k/2×2k = 1/4

You might be interested in
The change in the wind patterns on the earth that causes an increase in ocean temperatures is
sergejj [24]
The answer is el nino
5 0
3 years ago
A transfer of charge is actually a gross movement of
son4ous [18]
A transfer of charge is actually a gross movement of electrons. Charged objects have a normal or "balanced" state. This state is balanced in a sense of positive charges (protons) and negative charges (electrons). When an object has an excess of deficiency of electrons, it will try to regain its balance by releasing or accepting electrons. 
5 0
3 years ago
Read 2 more answers
A natural atom can be negatively charged by
svet-max [94.6K]

Answer:

By Gaining Electrons

Explanation:

A nuetral atom is negative when it gains electrons, and it can be positive when it loses electrons.

4 0
2 years ago
Read 2 more answers
As scientists research, they often find information that does not fit with current theories. What happens when new, contradictor
timofeeve [1]
The correct answer is "C". 'Old theories are adjusted to incorporate all old new information.' This makes the most sense, regarded the old and new information should be taken into consideration.

I hope this helped you!

Brainliest answer is always appreciated!
8 0
3 years ago
Read 2 more answers
During a baseball game, a batter hits a high .
Harman [31]

Answer: Due that we don't know the initial speed after hitting the ball, we are going to accept that the ball goes up for half of the time and then falls during other half part, that is 3.0 seconds each. Then we know that ball's movement is ruled by the acceleration of gravity formula, as follows: H = Vi * T + 1/2 * g * T^2 V = Vi + g * T where: H is height, Vi initial speed, g gravity acceleration and T time When we only consider the second half of the trajectory, we have that initial speed at the top of that movement is zero, because ball goes up till top, where stops and starts to go down, so : H = 0 * 3 + 1/2 * 32 * 3^2 = 144 ft. So the height of the pop-up is 144 feet.

7 0
3 years ago
Other questions:
  • A 1500-kg car accelerates from rest to 25 m/s in 7.0 s. what is the average power delivered by the engine? (1 hp = 746 w)
    15·2 answers
  • Which statements are true about the periodic table apex
    12·1 answer
  • Peter throws a snowball at his car parked in the driveway. The snowball disintegrates as it hits the car. By Newton’s third law,
    10·2 answers
  • A load of 500 N is placed 8 N from the pivot what is the turning moment of the load
    15·1 answer
  • Neptune is approximately 4.5 billion kilometers from the sun. What is this distance in AU?
    13·1 answer
  • A car slams on its brakes, coming to a complete stop in 4.0 s. The car was traveling south at 60.0 mph. Calculate the accelerati
    14·2 answers
  • A copper rod has a length of 1.3 m and a cross-sectional area of 3.6 10-4 m2. One end of the rod is in contact with boiling wate
    6·1 answer
  • my bf coming over after school and i still have no idea what to cook or make for him i can make almost everything but i have no
    5·1 answer
  • A man weighing 490 N on earth weighs only 81.7 N on the moon. His mass on the moon is ____ kg. (Use g=9.8 m/s²)
    15·1 answer
  • Aranza is 17 years old. What is her Target Heart Rate at 70%? I will give brainliest ​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!