Answer:
control of friction can be done with the help of lubricants
Explanation:
A common isotope of Carbon has an atomic number of 6 and a mass number of 13. How many neutrons are in an atom of this isotope?
A. 6
B. 7
C. 12
D. 13
Answer:
D. 13
Explanation:
For most elements other than hydrogen, isotopes are named for their mass number. For example, carbon atoms with the usual 6 neutrons have a mass number of 12 (6 protons + 6 neutrons = 12), so they are called carbon-12. Carbon atoms with 7 neutrons have an atomic mass of 13 (6 protons + 7 neutrons = 13).
HOPE IT HELPSmark me in brainliest answers please please pleaseCAN SOMEONE PLEASE DO THIS FOR ME. ILL GIVE YOU BRAINLIEST!!!! I NEED A STORY. (If you answer the question and it's not a real answer I'll report you)
Phases of Matter Activity
Now it is your turn to show what you know about phases of matter and thermal energy transfer! Your task is to create a presentation to explain the transformation of a substance as it changes phases. You may choose to write a story or create a comic strip. For your story or comic, you will create a main character and detail the adventure as your character is exposed to thermal energy, causing it to undergo phase changes from a solid, to a liquid, to a gas. You may create your own comic strip using drawings, presentation software, or this comic strip template.
Your presentation must include the following:
title and introduction of your character, including what substance the character is made of
source of thermal energy your character encountered (conduction, convection, and/or radiation)
detailed description and/or diagram of the particle transformation from solid to liquid phase
detailed description and/or diagram of the particle transformation from liquid to gas phase
Answer:
ok, This will be a story. (comic can also be done with this. In fact it is better)
The title is the journey of the ice cube. (change it if you want)
Main character - ice cube
There was an ice cube made by the water from the freezer in an ice shop.
The ice cube, with a bunch of other ice cubes, were taken to be packed and sold to a restaurant. The ice cube was excited to where he was going while the other ice cubes are just meh. Now that the ice cubes arrived, a restaurant worker stores the ice cubes in a cooler and later used to put ice in a lemonade. While the lemonade in a glass cup was carried outside the porch of the restaurant by the waiter, the ice cube was fascinated by the environment of the restaurant. The waiter finally serves the thirsty customer and the customer drank almost half of the lemonade but the ice cube did not get in the man's mouth. Instead the other ice cubes went. The ice cube feared the person. Shortly after checking his phone, the customer was about to reach on to the glass until the hands accidentally pushes the glass over and falls. The ice cube and the remaining ice cubes spread away with the wasted lemonade liquid. No one bothered cleaning up the ice cubes, only the glass shards because the floor is a smooth concrete. Outside was really hot from the sun anyways so it would melt the ice cube and sooner evaporate. As it was in liquid form, the "ice cube" was feeling relaxed because it was just chilling on the floor. And when it evaporates, the ice cubes becomes more fascinated since it goes up to the sky while having a sky-view from above.
That is the end.
You can add, edit or even not consider this one. But this is just an example to spark up your ideas. Sorry if I made some English mistakes.
Hope that helped! God Bless you!!!
Explanation:
Which of these materials is permeable?
Which type of radioactive decay produces the highest-energy radiation?
A. Beta decay
B. Alpha decay
C. Electromagnetic decay
D. Gamma decay
SUBMIT
Help
Answer:
gamma decay
Explanation:
Answer: gamma decay
Explanation: I took the test
The technique called ____ uses a high-speed computer to monitor atmospheric distortion and adjust the optics of a telescope to partially compensate for the seeing. The technique called ____ uses a high-speed computer to monitor atmospheric distortion and adjust the optics of a telescope to partially compensate for the seeing. adaptive optics photometry interfermometry chromatic aberration spherical aberration
Answer:
adaptive optics.
Explanation:
Light wave can be defined as an electromagnetic wave that do not require a medium of propagation for it to travel through a vacuum of space where no particles exist.
A lens can be defined as a transparent optical instrument that refracts rays of light to produce a real image.
A telescope can be defined as an optical instrument or device which comprises of a curved mirror and lenses used for viewing distant objects i.e objects that are very far away such as stars and other planetary bodies.
The technique called adaptive optics uses a high-speed computer to monitor atmospheric distortion and adjust the optics of a telescope to partially compensate for the seeing.
Basically, adaptive optics is used by astronomers to correct the distortions caused by the turbulence of the atmospheric conditions of the Earth in real-time, so as to have an image that is as sharp as anyone taken in space.
Explain how a star's absorption spectrum and the concept of red shift help support the Big Bang Theory.
Answer:
Red shift supports the big bang theory. ... The light from distant galaxies is red shifted (this tells us the galaxies are moving away from us) and the further away the galaxy the greater the red shift (this tells us that the more distant the galaxy the faster it is moving). Constellations look like they are moving because earth is rotating on it's axis.
May I have brainliest, please?
What change will have the least effect on solubility of a solid? O A. increase in temperature O B. increase in surface area O C. decrease in pressure O D. decrease in temperature
Answer:
increase in surface area
Explanation:
The string at the right is 6.0 meters long and is vibrating as the third harmonic. The string vibrates up and down with 45 cycles in 10 seconds.
Determine the frequency, period, wavelength, and speed for this wave
Answer:
L = 6 m n = 3 f = 45/10 = 4.5 Hz → T = 1/f = 0.22 s
wavelength = 2L/n = 2×6÷3= 4 m
speed(v) = wavelength × f = 4×4.5 = 18 m/s
Explanation:
second solution for frequency:
f= speed(v) / wavelength = nv/2L = 3×18÷(2×6) = 4.5 Hz
Jenny and Anne wanted to see who could throw a ball the hardest. They decided to each throw a ball against a wall as hard as they could and measure how far the ball rolled away from the wall
Answer:
The answer is below
Explanation:
Jenny and anne wanted to see who could throw the ball the hardest. they decided to each throw a ball against the wall as hard as they could and measured how far the ball rolled away from the wall. what might be the variables in this experiment;
Solution:
There are different type of collisions. In an inelastic collision, momentum is conserved and there is loss in kinetic energy while in an elastic collision, momentum is not conserved and there is no loss in kinetic energy.
During inelastic collision, the objects stick together while during an elastic collision, the objects separate.
When the ball is thrown against the stationary wall, there is momentum due to the force of impact. The distance at which the ball is rolled away from the wall depends on:
a) mass of the ball, b) velocity of the ball, c) mass of the wall d) type of collision (elastic or inelastic)
Actual mechanical advantage and ideal mechanical advantage are not equal.
True or False
!!PLEASE I NEED HELP ASAP!!
As the kinetic energy of the molecules in a substance increases, the
a. temperature of the substance increases.
b. temperature of the substance decreases.
c. potential energy of the substance changes.
d. temperature remains the same.
Answer:
a. temperature of the substance increases.
Explanation:
Temperature is defined as a measure of the average kinetic energy of a substance, so as one rises, so will the other. They are directly proportional.
As the kinetic energy of the molecules in a substance increases, the temperature of the substance is also increases because kinetic energy and temperature is proportional to each other.
Relation of kinetic energy and temperatureKinetic energy is directly related to temperature which means if kinetic energy is increased, the temperature of the solution is also increased and vice versa.
So we can conclude that As the kinetic energy of the molecules in a substance increases, the temperature of the substance is also increases because kinetic energy and temperature is proportional to each other.
Learn more about energy here: https://brainly.com/question/13881533
pls help will mark brainliest
Answer: a!! Bc 10x2=20!
Explanation:
Answer:
20N
Explanation:
F=m*a
F=10*2
F=20N
.....
Why are very high temperatures and pressures required for fusion to occur?
to generate the neutrons that are needed to break the nuclei
to overcome the repulsion between the protons in the nuclei that join
to maintain the proper conditions to keep the chain reaction going
to keep the uranium fuel separate from the control rods
Explanation:
to overcome the repulsion between the protons in the nuclei that join
Answer:
bBBBB
Explanation:
to overcome the repulsion between the protons in the nuclei that join
Which diagram represents a wave that changes speed
Answer:
Option D is correct answer of this question
Explanation:
=> Because in it sound is going from one
media to another media
=> so, this will change it's speed
hope it helps
Identify all the items James Naismith used to create the game of basketball. Selected:a. A basketballThis answer is incorrect. b. A peach basket c. A soccer ball d. A ten foot pole
Answer:
A & B
Explanation:
He used 2 peach basket and a soccer ball
A negative charge of -2.5 C and a positive charge of 2.0 C are separated by 100 m. What is the force between the two charges?
Explanation:
F = k |q1| |q2| / r^2
k = 9 * 10^9
q1 = - 2.5 C
q2 = 2 C
r = 100
r^2 = (10^2)^2 = 10^4
F = (9*10^9) * ( 2.5 ) ( 2) / ( 100)^2
F = 45* 10^9 / 10^4
F = 45 * 10^9 * 10 ^ -4 = 45 * 10^5 N
F = 45 * 10 ^ 5 N
on a distant planet a freely falling object has an acceleration of 20 m/s.^2 what speed will a body dropped from rest on his planet avquire in 1.5s
Answer:
30 m/s
Explanation:
Vf = ?
Vi = 0 m/s
a = 20 m/s^2
t = 1.5 s
Plug those values into the equation: Vf = Vi + at
Vf = 0 + (20)(1.5)
Vf = 30 m/s
Stephen Strasburg throws out the opening pitch at Nationals Park. The ball starts at rest, but
accelerates to 42 m/s (approximately 95 mph) in the 0.02 seconds it takes to throw. If the ball
has a mass of 0.145 kg, how much force did Strasburg throw with?
Answer:
Force = 304.5 Newton
Explanation:
Given the following data;
Initial velocity, u = 0m/s (since it started from rest).
Final velocity, v = 42m/s
Time, t = 0.02 secs
Mass = 0.145 kg
To find the force;
First of all, we would have to determine the acceleration of the ball;
Acceleration = (v - u)/t
Acceleration = (42 - 0)/0.02
Acceleration = 42/0.02
Acceleration = 2100 m/s²
Now, we solve for the force;
Force = mass * acceleration
Force = 0.145 * 2100
Force = 304.5 Newton
A girl with a mass of 60 kg can sprint at 8 m/s. What is her kinetic energy?
a.240J
b.240
c.1920 J
d.1920
what is a transverse wave
Answer:
a wave vibrating at right angles to the direction of its propagation.
Explanation:
Answer:
In Physics, a transverse wave is a moving wave whose oscillations are perpendicular to the direction of the wave. A simple demonstration of the wave can be created on a horizontal length of the string by securing one end of the string and moving the other up and down. Light is another example of a transverse wave, where the oscillations are electric and magnetic fields that are at right angles to the ideal light rays that describe the direction of propagation.
Explanation:
In Physics, a transverse wave is a moving wave whose oscillations are perpendicular to the direction of the wave. A simple demonstration of the wave can be created on a horizontal length of the string by securing one end of the string and moving the other up and down. Light is another example of a transverse wave, where the oscillations are electric and magnetic fields that are at right angles to the ideal light rays that describe the direction of propagation.
Transverse waves commonly occur in elastic solids, oscillations, in this case, are the displacement of solid particles from their relaxed position, in the direction perpendicular to the propagation of the wave. Since these displacements correspond to local shear deformation of the material, the transverse waves of this form are known as a shear wave. In seismology, shear waves are also known as secondary waves or S-waves.
Examples of Transverse waves
Some examples of transverse waves are listed below:
The ripples on the surface of the water
Electromagnetic waves
Stadium or a human wave
Ocean Waves
The secondary waves of an earthquake
(I hope this was helpful) >;D
A bowling ball rolls down a lane of length 19.2 m in a time of 3.0 s.
What will be the ball's average velocity?
Answer:
6.4 m/s
Explanation:
19.2/3=6.4
A laser produces light at 5.32x10-7 m.
What is the frequency of the light?
A. 1.77x10-6 Hz
B. 1.60x1011 Hz
C. 1.88x107 Hz
D. 5.64x1014 Hz
Answer:
D
Explanation:
speed = frequency x wavelength
speed of light in vacuum is 3.0 x 10^8
wavelength = 5.32 x10 ^-7
3.0 x 10 ^ 8 = 5.32 x 10^-7 x frequency
frequency = 5.63909 x 10^14
round it off = 5.64 x 10^14 Hz
thus the answer is D
hope this helps please mark it
Which two characteristics determine the setrength of the gravitational force between two objects ? a. Th distance between the objects near edges
Answer:
Product of masses and square of the distance them.
Explanation:
The gravitational force between two objects is given by :
[tex]F=\dfrac{km_1m_2}{r^2}[/tex]
The two characteristics that determine the strength of the gravitational force between two objects are :
1. The product of masses of two objects
2. The distance between the charges
Brady chucks a water balloon at Russell in the lunchroom. Running for his life, Russell travels 147m in 9.8s. What was his speed?
The2 archer uses a force of 120 N. The force acts on an area of 0.5 cm2 on the archer's fingers. . Calculate the pressure on the archer's fingers.
Answer:
Pressure = 24000 N/m²
Explanation:
Given the following data;
Force = 120N
Area = 0.5cm² to meters = 0.5/100 = 0.005 m²
To find the pressure;
Pressure= force/area
Pressure= 120/0.005
Pressure = 24000 N/m²
Therefore, the pressure on the archer's fingers is 24000 Newton per meters square.
The pressure on the archer's finger will be [tex]P=240 \ \frac{N}{cm^2}[/tex]
What will be the pressure?Pressure is defined as the normal force applied to the particular area. The formula is given as
[tex]P= \dfrac{F}{A}[/tex]
Here
F= Force applied
A= Area at which the force is applied
Now it is given that
F= 120 N
A= 0.5 [tex]cm^2[/tex]
Now by putting the values in the formula we get
[tex]P=\dfrac{120}{0.5} =240\ \frac{N}{cm^2}[/tex]
Thus the pressure on the archer's finger will be [tex]P=240 \ \frac{N}{cm^2}[/tex]
To know more about Pressure follow
https://brainly.com/question/991185
Regina is making observations of waves from different sources. She wants to classify the waves as either mechanical or electromagnetic. Which question will BEST help Regina to classify the waves?
A.
Can the wave transfer matter?
B.
Can the wave transfer energy?
C.
Can the wave travel through a vacuum?
D.
Can the wave travel through a liquid?
Answer:
A. Can the wave transfer matter?
Explanation:
EMW is made by vibrations of the charged particles and they work on a mechanical waveform. The energy is transferred through a vacuum and thus they need a medium to pass the energy. Thus in order to transport the energy from one place to another, such as a sound wave. Hence first she should have knowledge about the chemical and physical properties of the waves such as can they transfer matter.Q
1 On the Moon, the force of gravity on an object is only
about one sixth of its value on Earth. Decide whether
each of the following would give an accurate
measurement of mass if used on the Moon
a A beam balance like the one in the diagram at the
top of the page
b A balance like the one in the photograph above
Answer:
There aren't any attachments.
Explanation:
Answer:
i don't know
what is the formula for calculating the magnitude of kinetic frictional force
This means that measuring the pulling froce F is like measuring the force of static friction fs . Uk = FK . here
f= FK. FK = force of kinetic friction uk = coefficient of kinetic friction and N= normal to the contacting surfaces.
an ocean current moving from the equator toward a pole is
Answer:
A warm current
Explanation:
Answer:
A warm current is moving away from the equator towards the poles. The water in a warm current is warmer than the surrounding water.
What is the mass of a body?
Explanation:
The mass of a body is its inertia or resistance to change of motion. Mass can therefore be measured either by the amount of force necessary to impart to the body a given motion in a given time or by the acceleration produced by a given force. ...
