Answer:
If we put pressure on a solid or a liquid, there is essentially no change in volume. ... The kinetic-molecular theory explains why gases are more compressible than either liquids or solids. Gases are compressible because most of the volume of a gas is composed of the large amounts of empty space between the gas particles.
Explanation:
Yo can someone help this question is for 20 points : P pls solve
Answer:
10 points u liar so i wont answer
Explanation:
A concave shaving mirror has a radius of curvature of 25.0 cm. For each of the following cases, find the magnification and determine whether the image formed is real or virtual and upright
or inverted,
(a) an upright pencil placed 46.0 cm from the mirror
(b) an upright pencil placed 5.0 cm from the mirror
(a) The magnification is less than 1, the image is smaller than the object. Therefore, the image is real, inverted, and smaller than the object. (b)The magnification is less than 1 in magnitude, the image is also smaller than the object. Therefore, the image is virtual, inverted, and smaller than the object.
What do you understand by magnification?In mirrors, magnification refers to the degree to which an object's size appears to be larger or smaller when reflected in a mirror. The magnification of a mirror is determined by its curvature and distance from the object being reflected.
We can use the mirror equation and magnification formula to solve the problem:
Mirror equation:
1/f = 1/do + 1/di
Magnification formula:
m = -di/do
where
f = focal length of the mirror
do = object distance from the mirror
di = image distance from the mirror
m = magnification
Given:
Radius of curvature, R = 25.0 cm (since the mirror is concave, R is negative)
focal length, f = R/2 = -12.5 cm
(a) For an upright pencil placed 46.0 cm from the mirror:
do = 46.0 cm
Using the mirror equation, we can solve for di:
1/f = 1/do + 1/di
1/-12.5 = 1/46.0 + 1/di
di = -17.2 cm
Since di is negative, the image is formed behind the mirror, which means it is real. Also, the magnification is:
m = -di/do = -(-17.2 cm)/46.0 cm = 0.374
Since the magnification is less than 1, the image is smaller than the object. Therefore, the image is real, inverted, and smaller than the object.
(b) For an upright pencil placed 5.0 cm from the mirror:
do = 5.0 cm
Using the mirror equation, we can solve for di:
1/f = 1/do + 1/di
1/-12.5 = 1/5.0 + 1/di
di = 3.33 cm
Since di is positive, the image is formed in front of the mirror, which means it is virtual. Also, the magnification is:
m = -di/do = -3.33 cm/5.0 cm = -0.666
Since the magnification is negative, the image is inverted. Since the magnification is less than 1 in magnitude, the image is also smaller than the object. Therefore, the image is virtual, inverted, and smaller than the object.
Learn more about magnification here:
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Read the map key. Predict which location would expect to have the most extremes in average annual temperatures.
A.
B.
C.
D.
Answer:
D is the answer
Explanation:
Which best describes the effect of force on the motion of an object
Answer:
change of speed or direction
Forces between particles increase as the particles move faster and farther apart.true or false
Answer:
True
Explanation:
what are four forms of energy
Answer:
The four forms of energy are:
1. Kinetic Energy
2. Radiation Energy
3. Potential Energy
4. Chemical Energy
Explanation:
Above are listed the four main types of energy. Hope this helps! :)
A 188 W motor will lift a load at a rate of 0.065 m/s. How heavy of a load can the motor
lift at this rate?
Answer:
2892.31 N
Explanation:
Applying,
P = F×v................ Equation 1
Where P = power of the motor, F = Weight of the load the motor can lift, v = velocity
make F the subject of the equation
F = P/v.............. Equation 2
Given: P = 188 W, v = 0.065 m/s
Substitute into eequation 2
F = 188/0.065
F = 2892.31 N
Hence the weight of the load is 2892.31 N
What are 3 procedures of making a cardboard spinner help!! I need help ASAP
Answer:
please give me brainlist and follow
Explanation:
How to Make Paper Spinners
Step 1: Materials. All you really need is a normal sheet of paper. ...
Step 2: Fold Paper in Half. ...
Step 3: Tear/Cut Along the Fold. ...
Step 4: Fold the Half Sheets. ...
Step 5: Fold Down the Corners of Each Piece. ...
Step 6: Attach the Two Pieces to Create the Spinner. ...
Step 7: Shape Spinner for Best Spinning Abilities. ...
Step 8: Customize.
1.
If a force of 40N is applied for 0.2 sec
to change the momentum of a
volleyball, what is the impulse?
Answer:
J = 8 kg-s
Explanation:
Given that,
Force, F = 40 N
Time, t = 0.2 s
We need to find the impulse. We know that,
Impulse, J = F×t
So,
J = 40 × 0.2
J = 8 kg-s
So, the impulse is 8 kg-s.
(show your work)
What is the net force on the box shown below?
30 N
60 N
20 N
30
60 20
< Square >
Answer:
I don't do physics , I'm sorry can't help you
When a charge moves between
two points that have a potential
difference of +12.0 V, its electric
potential energy increases by
0.418 J. What is the amount
of the charge?
Include the correct sign, + or -
(Unit = C)
Answer:
+ 0.07 C
Explanation:
From the question given above, the following data were obtained:
Potential difference (V) = 12 V
Energy (E) = 0.418 J
Charge (Q) =?
The energy (E) , potential difference (V) and charge (Q) are related by the following equation:
E = ½QV
With the above formula, we can obtain the charge as follow:
Potential difference (V) = 12 V
Energy (E) = 0.418 J
Charge (Q) =?
E = ½QV
0.418 = ½ × Q × 12
0.418 = Q × 6
Divide both side by 6
Q = 0.418 / 6
Q = + 0.07 C
Answer:
.0348
Explanation:
right on Acellus
A scooter is moving with a speed of 18 m/s. Its mass is 20 kg. What is the
magnitude of its momentum?
A. 360 kg.m/s
B. 2 kg-m/s
C. 3600 kg.m/s
D. 1.1 kg.m/s
A scooter is moving with a speed of 18 m/s. Its mass is 20 kg. What is the magnitude of its momentum?
A. 360 kg.m/s
B. 2 kg.m/s
C. 3600 kg.m/s
D. 1.1 kg.m/s
Answer:-Given:-Speed (v) of a scooter = 18 m/s
Mass (m) = 20 kg
To Find:-Magnitude of its momentum (p) = ?
Answer:-Since, we know that,
p = mv
So,
p = 20 kg × 18 m/s
p = 360 kg.m/s
[tex] \therefore [/tex] The correct option is (A) 360 kg.m/s The magnitude of its momentum is 360 kg.m/s. [Answer]transformation of energy torch light by a battery
Answer:
electrical energy into light energy.
hope it helps.
Answer:
electrical energy to light energy
is the correct answer
hope it is helpful to you
and the above answer is correct
Name a device that transforms electrical energy to sound energy. ( it may also produce thermal (heat) energy)
the answer is speaker it transform electrical energy into sound energy
Answer:
Lightbulb.
Electric stove element.
Electric space heater.
lightning but it's not a device
Explanation:
Lightning converts electrical energy into light, heat and sound energy
11 points!!!
what happened when glucose reacts with air?
17)
A positively charged ion will bond with
A)
a negatively charged ion.
Elin
B)
a neutral atom.
C)
another positively charged ion.
D)
nothing else.
Answer:
Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... the complete transfer of valence electron(s) between atoms. It is ... The compound is neutral overall, but consists of positively charged ions called cations and negatively ... an ion with net negative charge, having more electrons than protons.
Explanation:
I need the answer please
Answer:
,1) point B
2) point A
I hope it's helps you
Hich type of electromagnetic waves are dangerous enough to be used to kill cancerous cells? gamma rays visible light infrared light microwaves
Answer:
gamma rays
Explanation:
Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.
Gamma rays is a type of electromagnetic waves that are dangerous enough to be used to kill cancerous cells.
In the electromagnetic spectrum, gamma rays are known to have the greatest amount of energy and shortest wavelength among the wave particles. They are generally produced through the disintegration of radioactive elements.
Answer:
A. Gamma rays
Explanation:
Proof:
Mark the correct statement: a) Charges flow through a circuit b) voltage is applied across the circuit c) voltage is the ratio of energy per coulomb of charge d) All of the above e) none of the above
Answer:
The correct option is;
d) All of the above
Explanation:
a) In an electric circuit through which electric current flows, it is due to the electric charges which can be the negatively charged electrons or the positively charged protons
b) Voltage is the potential difference that results in current flowing through the circuit, therefore, the voltage is applied across the circuit through which current flows
c) The voltage which is the electric potential difference is the change in potential energy in joules of a given system due to the movement of a test charge (in Coulombs) between points in the electric field, ΔE, divided by the value of the test charge, 'q'
V = ΔE/q
Therefore, all of the above are correct.
A force of 24 Newtons acts on an object for 2 seconds. What is
the amount of the impulse?
O 26Ns
O 48 Ns
0 22Ns
O 12Ns
explain in 2-3 sentences how a genotype determines a phenotype!
Will give b to the best one
Answer:
Genotypes are determined by tests. Genotype and phenotype sound the same but mean different things. The phenotype is determined by your genotypes and by your genes or traits, like hair color or type, eye shape and color, body and height. Were all unique, even identical twins, based on the way they look or act. Your uniqueness is based on your genetic make-up, that we inherited from our parents.
Is this better?
Brainliest please!
If the needle in the galvanometer is going up, what can you conclude about the motion of the magnet in the diagram?
It is not moving.
It must be moving left.
It must be moving right.
It is being moved in an unknown direction.
If the needle in the galvanometer is going up, the conclusion about the motion of the magnet is it must be moving right.
What is galvanometer?The galvanometer is the device used to detect the small current when moving coil is deflected.
When the magnet is moved towards or into the coil of wire, the magnetic field will change and voltage will be generated into the coil. The coil must be moving to the right when galvanometer going up.
Thus, the conclusion about the motion of the magnet is, it must be moving to the right.
Learn more about galvanometer.
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Neutrons have a
charge______.
Answer here
Answer:
neutral
Explanation:
how important is knowing and understanding the nature of the tasks and the function of a tool to successfully accomplish a specific task?
Explanation:
Management is important in every organization for smooth operation, development, and growth, coordination, optimum use of resources, etc. Functions of management include planning, organizing, staffing, directing and controlling.
What types of evidence are used to support The Big Bang theory?
Answer:
Hubble's Discovery
cosmic microwave background radiation
Answer:
Three main pieces of evidence for the Big Bang theory are the red-shift of light, cosmic background radiation and types of elements.
Explanation:
Two major scientific discoveries provide strong support for the Big Bang theory: • Hubble's discovery in the 1920s of a relationship between a galaxy's distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.
Dos automóviles A y B que inicialmente están separados una distancia de 5 km inician su movimiento simultáneamente con velocidades de 80km/h y 60km/h. Si salen a las2pm. A. ¿A qué hora se producirá el encuentro? B. ¿A qué distancia del punto P se producirá el encuentro?
Answer:
A) t = 900 s, the meeting time is 2 h 15 min p.m, B) x = 15000 m
Explanation:
A) This is an exercise in kinematics, we must assume that car A is behind so that it can catch up with the slower car B.
car A
x = x₀ₐ + v₀ₐ t
car B
x = x_{ob} + v_{oB} t
in this case x₀ₐ = 5 km and the initial position. B is zero
at the bare point the position of the two vile cars is the same.
x₀ₐ + v₀ₐ t = v_{ob) t
x₀ₐ = (v_{ob} - v₀ₐ) t
t = [tex]\frac{x_{oa}}{v_{ob} - v_{oa} }[/tex]
let's reduce the magnitudes to the SI system
x₀ₐ = - 5 km (1000m / 1 km) = -5000 m
v₀ₐ = 80 km / h (1000 m / 1km) (1 h / 3600 s) = 22.22 m / s
v_{ob} = 60 km / h (1000 m / 1 km) (1 h / 3600s) = 16,667 m / s
let's calculate
t = [tex]- \frac{5000}{16.667 - 22.222}[/tex]
t = 900 s
let's reduce to minutes
t = 900 s (1 min / 60 s) = 15 min
Therefore, the meeting time is 2 h 15 min p.m.
B) at what point are they
x = v_{ob} t
x = 16,667 900
x = 15000 m
A car is traveling at 120 kilometers per hour with 35,000 joules of kinetic energy on the freeway when it suddenly applies its brakes and comes to a screeching stop. How much of the original 35,000 joules of energy is left?
Answer:
0 J is left (No amount of the original 35000 J energy is left)
Explanation:
From the question
Kinetic Energy (K.E) = 1/2mv²................... Equation 1
Where m = mass of the car, v = velocity of the car.
make m the subject of the equation.
m = 2K.E/v²..................... Equation 2
Given: K.E = 35000 Joules, v = 120 km/h = (120×3600/1000) = 432 m/s
Substitute these values into equation 2
m = (2×35000)/432²
m = 0.375 kg.
If a brake is suddenly apply,
Then, the velocity of the car = 0 m/s.
Therefore,
K.E = 1/2(0.375×0²)
K.E = 0 J.
From the baove analysis, No amount of the original 35000 J energy is left.
What are the units of radiation?
The radiation dose absorbed by a person is measured using the conventional unit rad or the SI unit gray. The biological risk of exposure to radiation is measured using the conventional unit rem or the SI unit sievert.
I hope this helps!
Why was Roemer's measurement of the speed of light inaccurate?
a) because man's reaction time was much slower than the speed of light
b) because the eclipses of Jupiter's were not regular enough
c) he did not know the accurate diameter of the Earth's orbit
Which actions would INCREASE the potential energy of a cup
placed on a kitchen counter? Choose all of the correct
answer(s). Oh
Answer: Fill the cup with water
Add a handle to the cup
Lift the cup over the counter.
Explanation:
The options given are:
- Slide the cup away from the edge
- Fill the cup with water
- Turn the cup upside down
- Add a handle to the cup
- Move the cup to the floor
- Lift the cup over the counter
Potential energy refers to the energy that's being stored in a particular object. The formula for potential energy is given as:
PE = mgh
where,
m = mass
g = gravitational field.
h = height
The actions that'll increase the potential energy of the cup that's placed on the kitchen counter will be:
1. Fill the cup with water - This increases the weight of the cup.
2. Add a handle to the cup - The mass is increased as well.
3. Lift the cup over the counter - The height is increased.
