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
sergejj [24]
4 years ago
15

What must be true about two objects if heat is flowing between them? the objects must be different temperatures. the objects mus

t be the same temperature. the objects must both be over room temperature. the objects must both be under room temperature.
Physics
2 answers:
tester [92]4 years ago
7 0

Heat always flows from high temperature to low temperature and flows until the temperature between the two locations become equal. hence for the two objects having heat flowing between them, the temperature must be different. one object must have higher temperature than the other object.

hence the correct choice is

the objects must be different temperatures

VladimirAG [237]4 years ago
4 0
They must have different temperatures.
You might be interested in
Scientists use laser range-finding to measure the distance to the moon with great accuracy. A brief laser pulse is fired at the
Fofino [41]

Answer:

d = 2,042 10-3 m

Explanation:

The laser diffracts in the circular slit, so the process equation is

      d sin θ= m λ

The first diffraction minimum occurs for m = 1

We can use trigonometry in the mirror

        tan θ = Y / L

Where L is the distance from the Moon to Earth

Since the angle is extremely small

           tan θ = sin θ / cos θ

           Cos θ = 1

           tant θ = sin θ = y / L

We replace

           d y / L = λ

           d = λ L / y

Let's calculate

           d = 532 10⁻⁹ 3.84 10⁶/1 10³

           d = 2,042 10-3 m

5 0
3 years ago
What is the speed of sound in air with temperature of 355.8 k​
nikklg [1K]

Answer:

Explanation:

20.05 √Tk = 20.05 √355.8 = 378.196... ≈ 378 m/s

7 0
3 years ago
Which types of numbers does scientific notation best describe?
Travka [436]
The correct answer is
<span>c) very small and very large

Let's see this with a few examples:
1) if we have a very small number, such as
</span>0.0000000001
<span>we see that we can write it easily by using the scientific notation:
</span>1\cdot 10^{-10}
<span>2) Similarly, if we have a very large number:
</span>10000000000
<span>we see that we can write it easily by using again the scientific notation:
</span>1 \cdot 10^{10}<span>
</span>
4 0
3 years ago
Real springs have mass. How will the true period andfrequency
Ad libitum [116K]

Explanation:

An perfect mass less spring, attached at one end and with a free mass attached at the other end, will have a distinct frequency of oscillation depending on its constant spring and mass. On the other hand, a spring with mass along its length will not have a characteristic frequency of oscillation.

Alternatively, based on its spring constant and mass per length, it will now have a wave Speed. It would be possible to use all wavelengths and frequencies, as long as the component fλ= S, where S is the spring wave size. If that sounds like longitudinal waves, like solid sound waves.

4 0
3 years ago
Please help I literally don’t understand
Veseljchak [2.6K]

Answer:

A= 2

B=3

C=4

D=5

E=7

F=8

H=12

7 0
3 years ago
Other questions:
  • Affirmations and strokes relate to the power of adult
    15·1 answer
  • PLEASE HELP ASAP!! CORRECT ANSWER ONLY PLEASE!!
    5·2 answers
  • . Why are SI units helpful to scientists especially when describing objects?
    13·1 answer
  • Plz help will give brainliest and 85 points and u can answer one at a time if u want
    9·2 answers
  • A source emits a sound and is represented by the red dot in this map. Four people are located around the source, and the circles
    13·2 answers
  • A simple watermelon launcher is designed as a spring with a light platform for the watermelon. When an 8.00 kg watermelon is put
    15·1 answer
  • A kangaroo jumps up with an initial velocity of
    12·1 answer
  • How do velocities combine
    12·1 answer
  • In a series circuit of two resistors, the resistors have the same __________; in a parallel circuit of two resistors, the resist
    9·1 answer
  • Grey heated a cup of cocoa in the microwave. When she removed it from the microwave, the cocoa was too hot to drink, so she left
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!