This object is located 13.0 cm to the left of the lens and the image forms at 20.8 cm to the right of the lens.
What is the focal length of the lens?
Answer:
0.125 cm
Explanation:
1/f = 1/d¡ + 1/d。
Find the focal point
(13.0^-1 + 20.8^-1) = 0.125 m
Focal point = 0.125 m
The object placed in front of mirror forms an image on the opposite side of the mirror. The focal length of the lens is 0.125 m.
What is focal length?Focal length is the distance between the lens and the image sensor when the object is in focus.
The focal length can be find out by using lens maker formula.
1/f = 1/d¡ + 1/d。
1 / 13.0 + 1 / 20.8
f = 0.125 m
Thus, the focal length of the lens is 0.125 m.
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Describe the movement of molecules in an ice cube at the temperatures shown, and indicate whether the ice cube will change state.
Answer: The ice molecules expand and become stuck since the water is frozen and start to vibrate
Explanation:
According to the concept of thermal energy, as the temperature rises thermal energy increases and molecules start vibrating faster and ice changes it's state to water that is from solid to liquid.
What is thermal energy?Thermal energy is defined as a type of energy which is contained within a system and is responsible for rise in temperature.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.
Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance containing molecules or atoms are vibrating faster.
These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the number of collision of particles , higher is the thermal energy.
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The sound wave passes from the sea-water into the air. State what happens to; the speed of the waves
The speed of sound wave in water is much more greater than its speed in air, so when the sound wave passes from sea water to air, then it's speed decreases.
A force is acting on a 3-kg object during 5 seconds. If the object initially has a speed of 1.5m/s and after applying the force its speed is 4 m/s
Answer:
1.5 N
Explanation:
You've left us to guess what the question is. I will Assume it is what's the force?
Givens
m = 3 kg
vi = 1.5 m/s
vf = 4 m/s
t = 5 seconds
Formula
F = m * (vf - vi)/t
Solution
F = 3 * (4 - 1.5) / 5
F = 1.5 N
a rock of mass of 540 g in the air is found to have an apparent mass of 342 g when submerged in water (a) calculate the weight of the Rock given that the acceleration of the air g 10 m / s² to ignore the air resistance
Answer: 5.4 N
Explanation:
Given
mass of rock in the air is 540 g
Apparent mass of 342 gm when submerged in water
Weight of the rock is the product of mass and accleration due to gravity
[tex]\Rightarrow W=mg\\\Rightarrow 0.540\times 10=5.4\ N[/tex]
Which action would not speed up erosion in a Texas ecosystem?
A
High winds
B
Flash flooding
C
Acid rain
D
Large waves
What is the gamma factor for an object moving at 0.5c?
A. 0.866
B. 0.707
C. 1.15
D. 1.41
Answer:1.15
Explanation:
Answer:
C. 1.15
Explanation:
We can calculate the gamma factor for an object moving at 0.5c, using the formula:
γ = 1/√(1 - v^2/c^2)
--------
where v is the velocity of the object and c is the speed of light.
Substituting v = 0.5c, we get:
γ = 1/√(1 - 0.5^2) = 1/√(1 - 0.25) = 1/√0.75 ≈ 1.155
--------
Therefore, the gamma factor for an object moving at 0.5c is approximately 1.155.
PLEASE HELP! An object is placed at a distance of 18.0 cm to the left of a thin converging lens of focal length -10.0 cm. Where does the image form
Answer: 6.4
Explanation:
A pendulum is in a spacecraft to measure
acceleration during lift off. Before the launch, its period
is 6.5 X 10-3 s. At a point during lift off, its period is 3.1
X 10-3 s. What is the acceleration at this point?
Answer:
For small angles (✓ < 30 degrees), the period of a simple pendulum4can be approximated by: 3A radian is an angle measure based upon the circumference of a circle C =2⇡r where r is the radius of the circle. A complete circle (360 ) is said to have 2⇡ radians. Therefore, a 1/4 circle (90 )is⇡/2 radians.
Explanation:
how are the process of melting and freezing similar?
a. they are both processes where heat is released by a substance.
b. they are both processes that physically change a substance.
c. they are both processes that chemically change substance
d. they are both pressure where heat is absorbed by a substance.
Si la rapidez lineal de un móvil que se desplaza con MCU se triplica y el radio se mantiene constante, entonces la fuerza centrípeta:
Answer:
F' = 9 F
Explanation:
The question says that, "If the linear speed of a mobile moving with MCU is tripled and the radius remains constant, then the centripetal force:"
The formula for the centripetal force is given by :
[tex]F=\dfrac{mv^2}r{}[/tex]
Where
m is the mass of the object
v is the velocity
r is the radius of path
If the linear speed us tripled, v' = 2v, r = constant, then the new centripetal force is given by :
[tex]F'=\dfrac{mv'^2}r{}\\\\F'=\dfrac{m(3v)^2}{r}\\\\=\dfrac{mv^2}{r}\times 9\\\\F'=9F[/tex]
So, the new force becomes 9 times of the initial force.
can anyone else finish the parts?
Answer:
2. wavelength
3. Crest
4. Rest
5. Trough
6. Amplitude
Explanation:
1. Which types of planets are more dense: terrestrial or
Jovian?
2. What is a light year?
Answer:
1. terrestrial
2. The distance light travels in one year
Explanation:
Do you want robot referees in your favorite class?
Answer:
Sounds cool.. but what do they do?
Explanation:
If a person applies the same amount of force to an object what would
accelerate faster? *
1. A rock
2. A basketball
3. Bouncy ball
4. House
Answer:
A rock because
Explanation:
Answer: HERE IS THE ANSWER SIR
Explanation: SO I BELIEVE IT WOULD BE A BASKETBALL THINK ABOUT WHEN YOU TRY TO PUSH A TABLE THATS PUTTING EXTRA FORCE BUT IF YOU WERE TO DO THAT TO A BASKETBALL IT WOULD ACCELERATE MUCH RAPIDLY THEN ALL THE OTHER OBJECTS I CONSTANTLY DO THE PROCESS OF ELIMNATION WITH ALL THE CHOICE AND I FIGURED OUT IT WAS A BASKETBALL. I HOPE THIS HELPED HAVE A NICE DAYY!!
Which one of the following temperatures (in °C) is equivalent to 294 K?
A. 21 °C
b. - 312 °C
c. 39 °C
d. 585 °C
Answer:
21
Explanation: its actually 20.85 but i guess they round to 21
Hola puntos gratis !!!!!!!!!!!!!!!!!
Answer:
gracias
Explanation:
Hello.
Brainly points can be used for better situations, brainly points are experience that you receive by answering well.
The duration between the emission of the sound from the echo reception is: t - 1.5 s. the distance between the observer and the sound receiver knowing that the speed of sound in the air is worth
V - 340 m/s is:
Answer:
. tt tt t t t t t t tt t tt t t jk j k j k j k j k jk k j k jk
Which of the following is not a region of the brain?
Cerebellum
Cortex
Diencephalon
Brain Stem
20 points and brainlist!!!
Write about a situation where it might be more useful to describe motion using velocity instead of speed.
Answer:
If you are going someplace, you might want to tell which way you were going and how fast for traffic.
Explanation:
The equation of a displacement time-curve of a particle is given as x=〖10t〗^2, the instantaneous velocity at t= 1s is *
please find ur answer in the attached image, mark as brainliest if it helps.
what type of galaxy Andromeda is??
Answer:
a spiral
Explanation:
It's the largest member of the Local Group of galaxies
Answer:
Barred spiral galaxy
A 6.00 volt battery is in a circuit with two resistors, A and B, connected in parallel. If the current flowing
out of the battery is 90.0 mA, what is the value in ohms of B if A is 100 ?
Answer: [tex]200\Omega[/tex]
Explanation:
Given
The battery used is 6V in magnitude
The current flow is 90 mA
If the resistance of A is [tex]100\Omega[/tex]
Net resistance of the circuit is
[tex]R_{net}=\dfrac{V}{I}\\\\\Rightarrow R_{net}=\dfrac{6}{90\times 10^{-3}}\\\\\Rightarrow R_{net}=\dfrac{200}{3}\Omega[/tex]
If A and B are in parallel then their net resistance must be [tex]\frac{200}{3}[/tex]
[tex]\dfrac{1}{\frac{200}{3}}=\dfrac{1}{100}+\dfrac{1}{R_b}\\\\\Rightarrow \dfrac{1}{R_b}=\dfrac{3}{200}-\dfrac{1}{100}\\\\\Rightarrow \dfrac{1}{R_b}=\dfrac{3-2}{200}\\\\\Rightarrow R_b=200\Omega[/tex]
Erosion and physical weathering is a ________________ force that affects land formation
Answer:
Any choices for the blank?
HOW DOES A GRAPH HELP YOU SEE ANOMALOUS DATA?
Answer:
Anomalies consist of one or more modifications, insertions or deletions. As was described in Section 3.1, there are only three types of changes that can be made to a graph. Therefore, anomalies that consist of structural changes to a graph must consist of one of these types. Assumption 4.
Explanation:
Is bio, chem, or physics better?
Two numbers are in the ratio 8 : 5. If 6 is added to each number, the ratio becomes
3:2.
Let the numbers be 8x and 5x
ATQ,
= 8x + 6/5x + 6 = 3/2
= 2(8x + 6) = 3(5x + 6)
= 16x + 12 = 15x + 18
= 16x - 15x = 18 - 12
= x = 6
Now, the numbers are:
8x = 8 × 6 = 485x = 5 × 6 = 30what effect does the earth's surface have on solar radiation?
A. The ground absorbs half the solar radiation and stored it as infrared radiation for centuries
B. Half of the solar radiation is absorbed and converted to infrared (heat)
C. Nearly all solar radiation is reflected back into space by the ground
Answer:
B.
Explanation:
Solar radiation that is not absorbed or reflected by the atmosphere (for example by clouds) reaches the surface of the Earth. The Earth absorbs most of the energy reaching its surface, a small fraction is reflected. In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth’s surface while around 30% is reflected back to space and does not heat the surface. The Earth radiates energy at wavelengths much longer than the Sun because it is colder. Part of this longwave radiation is absorbed by greenhouse gases which then radiate energy into all directions, including downwards and thereby trapping heat in the atmosphere.
Hope this helps, sorry if it is incorrect. Have a great day/night!
Solar radiation that is not absorbed or reflected by the atmosphere (for example by clouds) reaches the surface of the Earth. The Earth absorbs most of the energy reaching its surface, a small fraction is reflected
What is solar radiation?Solar radiation, often called the solar resource or just sunlight, is a general term for the electromagnetic radiation emitted by the sun.
Solar radiation can be captured and turned into useful forms of energy, such as heat and electricity, using a variety of technologies
Solar radiation that is not absorbed or reflected by the atmosphere (for example by clouds) reaches the surface of the Earth.
The Earth absorbs most of the energy reaching its surface, a small fraction is reflected. In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth’s surface while around 30% is reflected back to space and does not heat the surface.
The Earth radiates energy at wavelengths much longer than the Sun because it is colder.
Part of this longwave radiation is absorbed by greenhouse gases which then radiate energy into all directions, including downwards and thereby trapping heat in the atmosphere.
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Identify the vibrating media in three different
types of musical instruments.
Explanation:
Hole. Hole. Different notes can be played on the flute by blocking holes. ...
Drum skin. Drum skin. Hitting the bongo drum makes its tight elastic skin vibrate.
String. String. ...
Sound. hole. ...
Bow. Bow.
Convert the following into radians 90°, 30°, 45°, 180°
Answer:
90 degress -> radians= π/2
30 degress -> radians= π/6
45 degrees -> radians= π/4
180 degress -> radians= π
Explanation:
To convert degrees to radians, multiply the degree by π/180 and simplify.