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
Alex Ar [27]
3 years ago
13

Which of the following statements is true?

Physics
2 answers:
kupik [55]3 years ago
6 0

Answer: The correct answer is "The freezing and melting temperatures of a substance are the same".

Explanation:

Freezing temperature: It is the temperature at which the liquid becomes the solid.

Melting temperature: It is the temperature at which the solid starts converted into liquid.

The freezing point of a substance is the same as the melting point of the substance. During melting and freezing of the substance, the temperature remains same as the energy is spent in changing the phase of the substance not in changing the temperature.

Latent heat is there. It is a hidden heat. It is required to change phase of the substance without showing temperature on thermometer.

Boiling temperature: It is the temperature at which liquid gets converted into vapors. At this temperature, vapor pressure of the liquid equals to the pressure surrounding the liquid.

xenn [34]3 years ago
4 0

Correct answer choice is :


C) The freezing and melting temperatures of a substance are the same.


Explanation:


Fluids have a particular temperature at which they convert into solids, identified as their freezing point. In theory, the melting point of a solid should be the same as the freezing point of the liquid. In practice, small variations among these measures can be seen. The freezing point of a matter is the same as that substance's melting point. At this distinct temperature, the substance can exist as either a solid or a liquid. At temperatures below the freezing/ melting point, the substance is a solid.


You might be interested in
Jacques is trying to put a screw into a hard piece of wood, but it is too difficult for him to turn. Which of the following woul
solniwko [45]

Answer:

A. It is the only one that makes sense

Explanation:

3 0
3 years ago
How does the vertical component of a projectile’s motion compare with the motion of vertical free fall when air resistance is ne
likoan [24]

Answer:

Explanation:

The vertical component of velocity remains same as the free fall. The vertical motion of the projectile is same as the free fall motion.

5 0
3 years ago
Help me, i don't know the answer ​
8_murik_8 [283]

Explanation:

1)

A) Bb BB

B) 50%

2)

A) 50%

B) <u> </u><u> </u><u> </u><u> </u><u> </u><u>b</u><u>.</u><u> </u><u> </u><u> </u><u>b</u>

B. Bb. Bb

b. bb. bb

4 0
2 years ago
Match each type of wave to the way it moves. transverse wave longitudinal wave electromagnetic wave back and forth at right angl
marta [7]

Transverse wave = at right angles to the direction of the motion of the wave

in transverse wave medium particles will move perpendicular to the direction of motion of medium particles

they all are perpendicular to wave always

Longitudinal wave = back and forth in the direction of the motion of the wave

in longitudinal waves medium particles will move in the direction of wave and the motion is always in back and forth type

electromagnetic wave = alternating waves moving at right angles to each other

electromagnetic waves are combination of electric field and magnetic field which oscillates perpendicular to wave as well as they are perpendicular to each other

8 0
3 years ago
Read 2 more answers
A tennis ball is thrown from a 25 m tall building with a zero initial velocity. At the same moment, another ball is thrown from
Nataly [62]

Answer:

The two balls meet in 1.47 sec.

Explanation:

Given that,

Height = 25 m

Initial velocity of ball= 0

Initial velocity of another ball = 17 m/s

We need to calculate the ball

Using equation of motion

s=ut+\dfrac{1}{2}gt^2+h

Where, u = initial velocity

h = height

g = acceleration due to gravity

Put the value in the equation

For first ball

s_{1}=0-\dfrac{1}{2}gt^2+25....(I)

For second ball

s_{2}=17t-\dfrac{1}{2}gt^2+0....(II)

From equation (I) and (II)

-\dfrac{1}{2}gt^2+25=17t-\dfrac{1}{2}gt^2+0

t=\dfrac{25}{17}

t=1.47\ sec

Hence, The two balls meet in 1.47 sec.

6 0
3 years ago
Other questions:
  • Which of the following best characterizes the free energy change ΔG for an endothermic reaction under physiological conditions?A
    8·1 answer
  • A poundal is the force required to accelerate a mass of 1 lbm at a rate of 1 ft/s2 , and a slug is the mass of an object that wi
    12·1 answer
  • How do you use the SI conversion tool to perfom metric conversions?
    15·1 answer
  • Relate the output of energy from a heat engine to the energy put into the heat engine considering the second law of thermodynami
    7·1 answer
  • The picture shows the inside of an eye.
    11·1 answer
  • 1. _______ magma causes powerful and explosive volcanic eruptions. A. Andesitic B. Rhyolitic C. Basaltic D. Composite
    13·2 answers
  • ___________ have the highest rates of star formation
    6·1 answer
  • EASY QUESTION FOR HIGH SCHOOL TEENS SUPER EASY
    5·2 answers
  • A Formula 1 racing car can accelerate from a stationary position to 25 m/S in 2.1s calculate
    13·1 answer
  • Between the orbits of Mars and Jupiter, several thousand small objects called asteroids move in nearly circular orbits around th
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!