Answer:
the answer would be c I think
The correct volume is dispensed by emptying the contents of the pipet until the liquid reaches the 10 mL mark.
What is a serological pipet?Pipets are made of graduated glass or plastic are used to measure and dispense a certain volume of liquid.
They can be graded class A or class B based on tolerances, labeled "To Contain" or "To Deliver," and can be sterile or nonsterile. The quantity (Metric).
The correct volume is dispensed by emptying the contents of the pipet until the liquid reaches the 10 mL mark.
Hence option C is correct
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a piece of clay with mass m is traveling with an unknown velocity in the positive x-direction, when it collides and sticks to a block of mass 3m, moving with velocity v=-3m/s. after the collision, the block and clay are stuck together and traveling with a velocity of 1 m/s in the negative x-direction. what was the original velocity of the clay mass?
Answer:
13 m in the + x direction.
Explanation:
Givens
m1 = m
m2 = 3m
v1= ? = x
v2 = - 3 m/s
v3 = v4 = - 1 m/s
Equation
Let x be the speed of the lighter object before collision.
Momentum before collision = momentum after collision
Solution
mx - 3m * 3m/s = (m1 + m2)*(-1)
m(x - 3*3m/s) = (m + 3m)(-1)
m(x - 9) = - 4m Cancel the ms
x - 9 = 4 Add 9 to both sides
x = 9 + 4
x = 13 m/s
In scientific terms, which situation does NOT represent work done on a rock?
A. Lifting a rock
B. Holding a rock
C. Throwing a rock
D. Pushing a rock
What is the wavelength associated with 0.113kg ball traveling with velocity of 43 m/s?
Answer:
Wavelength = 1.36 * 10^{-34} meters
Explanation:
Given the following data;
Mass = 0.113 kg
Velocity = 43 m/s
To find the wavelength, we would use the De Broglie's wave equation.
Mathematically, it is given by the formula;
[tex] Wavelength = \frac {h}{mv} [/tex]
Where;
h represents Planck’s constant.
m represents the mass of the particle.
v represents the velocity of the particle.
We know that Planck’s constant = 6.6262 * 10^{-34} Js
Substituting into the formula, we have;
[tex] Wavelength = \frac {6.6262 * 10^{-34}}{0.113*43} [/tex]
[tex] Wavelength = \frac {6.6262 * 10^{-34}}{4.859} [/tex]
Wavelength = 1.36 * 10^{-34} meters
Where is the ((north)) pole of the bar magnet, based on the magnetic field lines shown?
A. On the left end
B. On the bottom edge
c. On the top edge
D. On the right end
Answer:
D
Explanation:
The north field of a magnet is the positive side. Arrows pointing out of a side = positive
What do all magnets have in common? Select all that apply.
magnetic domains are aligned
magnetic domains are not aligned
movement of protons creates a magnetic field
all magnets have opposite poles ( a North pole and South pole)
movement of electrons creates a magnetic field
moving electrons generate magnetic fields
Answer:
all magnets have opposite poles (north and south)
magnetic domains are aligned
moving electrons generate a magnetic filed
movement of electrons creates a magnets field
PlZ help
Why is it advantageous for a boxer to ride with the punch? Why should he avoid moving
into an oncoming punch?
All of the following are characteristics of a laser diode except
Answer:
D
Explanation:
Given that all of the following are characteristics of a laser diode except
Solution.
A laser diode emit light of a single colour. That is, it emits a monochromatic light in which the light emitted monochromatically will definitely be coherent. That is, a light with a single wavelength emitted by a wide wavelength.
Also, all diode have positive and negative junction which is known as pn junction.
The incorrect among all the options is option D which is the answer.
Look for factors that will help you determine what type of economy exists in Country C. What type of economy does Country C have? developed developing transitioning command
Answer:
C.) transitioning
Explanation:
Look for factors that will help you determine what type of economy exists in Country C is a transitioning economy.
What is economy transition?The transition economy or economy in transition is an economy that is changing from centrally planned to free market. These submit to Liberalism, where market forces are prices, rather than a centrally planned organization.
For these reasons we can say that the economy of country C is a transition economy.
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1.Mention two uses of the concave mirror.
1.Discuss the theory of the two methods of determining focal length (f).
Answer:
1. telescope
2.
[tex]f = \frac{r}{2} [/tex]
[tex]f = \frac{r}{2} [/tex]f- focal length
[tex]f = \frac{r}{2} [/tex]f- focal length r- the radius of curvature of the mirror
[tex] \frac{1}{f} = \frac{1}{p} + \frac{1}{l} [/tex]
p-the distance of the object from the vertex of the mirror
l-the distance of the figure from the vertex of the mirror
If the force of gravity changes what will happen and what would cause it to change?
I need help please!!!!!!!!!!!
Answer:
correct answer is rapid city
An organism is composed of several organ systems. Often, the different organ systems work together towards a common purpose. For example, going for a run requires the use of several different organ systems. List two systems below and describe how they are used while running. *
Answer:
Skeletal system, muscular system
Explanation:
Skeletal system:
bones
Muscular system:
muscles
Together, they work together and create the musculoskeletal system.
Answer:
A number of body systems are used when we are running. These systems include the nervous system, skeletal system, muscular system, respiratory system and the circulatory system. When we decide to run, a signal is sent from our brain to our muscles through the nervous system. Once the signal is received, our muscles starts to contract and we start running using our legs. The process of running uses a lot of energy and this energy is provided to us by cellular respiration. We use the respiratory system to bring oxygen into the body, where it interacts with food and generates energy. The carbon dioxide produced is removed by the respiratory system. The gases are transported throughout the body by our circulatory system. Thus, a number of body systems work in conjunction to enable a simple activity like running.
Hope this helps.
*please help fast**15 points*
How is laser light different from the light produced by a flashlight?
A. The crests of laser light waves align with one another.
B. Lasers produce multiple wavelengths of light.
C. Lasers produce light that is incoherent
D. Flashlights use reflecting mirrors and lasers do not.
Answer:
B.
Explanation:
Laser light is different from normal light in other ways as well. First, its light contains only one wavelength (one specific color). ... Whereas a laser generates a very tight beam, a flashlight produces light that is diffuse. Because laser light is coherent, it stays focused for vast distances, even to the moon and back
What are the features of nanotechnology?
Answer:
Characteristics of Nanotechnology
Explanation:
Nanotechnology deals with putting things together atom by atom and with structures so small they are invisible to the naked eye. It provides the ability to create materials, devices and systems with fundamentally new functions and properties
what is the main cause of the seasons
What is Compression?
Answer:
Compression, decrease in volume of any object or substance resulting from applied stress. Compression may be undergone by solids, liquids, and gases and by living systems.
Explanation:
| Britannicahttps://www.britannica.com
what is motion wave?
Answer:
Wave motion is the transfer of energy and momentum from one point of the medium to another point of the medium without actual transport of matter between two pointsxplanation:
PLEASE ILL GIVE BRAINLIST Which term describes the high point of a transverse wave?
O A. Crest
O B. Compression
O C. Rarefaction
O D. Trough
Answer:
I belive that the answer is the A
Crest describes the high point of a transverse wave. Therefore, the correct option is option A.
Transverse waves are those which oscillate in directions that are opposite to the wave's forward motion. Electromagnetic radiation, seismic waves, or water surface ripples are all examples of transverse waves.
A simple transverse wave can be represented by a sine or cosine curve because any point's amplitude—that are, its distance from the axis—is proportional to the sine (or cosine) associated with that angle. Crest describes the high point of a transverse wave.
Therefore, the correct option is option A.
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The definition that best describes invention is:
Your answer:
Invention is the first product produced on an assembly line
Invention is having a desired goal to achieve something
Invention is changing the size of an existing product
Invention is a process of turning ideas into devices or systems
Answer: Invention is a process of turning ideas into devices or systems.
Explanation:
Invention is a process of turning ideas into devices or system. Invention, simply has to do with bringing of ideas together so as to create something unique.
It should be noted that without creativity, invention can't take place. Examples of invention include the light bulb, fans etc. They are products that were designed based on the ideas that someone had Wich was turned into a device.
a force acting on a body of mass 24 kg produces an acceleration of 12ms ^-2 . what acceleration will the same force produce in a body of 10 kg
please give answers if they are right and you know how to do it
Answer: a = 28,8
Explanation:
[tex]F = ma[/tex]
m = 24 , a = 12
[tex]F=ma\\\\F = 24 x12\\\\F=288[/tex]
Same force :
m = 10
a = ?
F = 288
[tex]F = ma \\\\288 = 10xa \\\\28,8=a[/tex]
mc2
Describe the process of nuclear fission and how the famous equation E
relates to this process.
frfyuegffffjhAnswer:
frjhgfjgresjytgfejygfjse
Explanation:
did you guys get this : The x-component of motion of an object is given by x(t) = Axcos(ωxt + φx) and the y-component of motion of the object is given by y(t) = Aycos(ωyt + φy). What relationships between the A,ω, and φ parameters must be true so that the motion of the object is on a circle?
Answer:
Aₓ = A_y = A
wₓ = w_y = w
Фₓ = Ф_y = Ф
Explanation:
For a movement to be circular it must meet the exception of the circle
R² = x² + y²
in the exercise indicate the expressions of the movement in the two axes
x (t) = Aₓ cos (wₓ t + Фₓ)
y (t) = A_y cos (w_y t + Ф_y)
we substitute
R² = Aₓ² cos² (wₓ t + Фₓ) + A_y² sin² w_y t + Ф_y)
for this expression to be a circle it must meet
Aₓ = A_y = A
wₓ = w_y = w
Фₓ = Ф_y = Ф
with these expressions
R² = A² [cos² (w t + Ф) + sin² (wₓ t + Фₓ) ]
use the trigonometry relationship
cos² θ + sin² θ = 1
R² = A²
Therefore, it is fulfilled that it is a circle whose radius is equal to the amplitude of the movement
what Sport is similar to Ulama
Why can’t human males be carriers for sex linked (x-linked) disorders?
Answer:
This is because the X chromosome is large and contains many more genes than the smaller Y chromosome. In a sex-linked disease, it is usually males who are affected because they have a single copy of X chromosome that carries the mutation.
Explanation:
Fossil fuels can be replaced.
Yet, they are considered
nonrenewable. Why?
A. Fossil fuels only take a few years to
replenish.
& Dirt
al
B. Fossil fuels take millions of years to
replenish.
C. Fossil fuels can never be replenished.
Silt
What are supernovae?
A. stars that have reached the end of their lifetimes because their nuclear fuel is exhausted
B. stars that suddenly brighten by 100 to 10,000 times in a day
с. stars that have just been born
D. galaxles that have binary systems
Answer:
A
Explanation:
AAAaaaaaaaaaaaaaaaaaaaaaaaaa
Answer:
A. Stars that have reached the end of their lifetimes because their nuclear fuel
Explanation:
plato
How are longitudinal and transverse waves alike? How are they different?
Answer:
Longitudinal and transverse waves have many similarities and differences.
Explanation:
Similarities:
Mechanical waves can be transverse and longitudinal waves.
Transverse and longitudinal waves both have wavelengths and frequencies.
They both have amplitudes
Both waves can travel through a medium or not, but it depends on whether is an electromagnetic or a mechanical wave.
Differences:
Electromagnetic waves can only be transverse.
The particles of the medium in a longitudinal wave move parallel to the direction (motion) of a wave. It is in this back and forth motion.
The particles of the medium in a transverse wave move perpendicular to the direction (motion) of a wave. This means that there would be right angles showing that they are perpendicular.
Longitudinal waves have rarefactions and compressions.
These rarefactions and compressions are used to measure the wavelength of a wave. For instance, a wavelength in a longitudinal wave is measured from rarefaction to rarefaction
Transverse waves have troughs and crests.
Amplitude in a transverse wave is measured from the midline to the crest of trough.
Amplitude in a longitudinal wave is measured based on how closely packed the particles of the medium are
I hope this helps
Answer:
Longitudinal and transverse waves are mechanical waves, so both carry energy through particles of matter. Longitudinal waves transfer energy parallel to the direction of wave motion, and transverse waves transfer energy perpendicular to the direction of wave motion.
Explanation:
trust me youll get it right :D
What is the impulse required to stop a 4.8 kg mass traveling at 18.9 m/s?
Report your answer to 1 decimal place.
Answer:
MASS=4.8KG
VELOCITY= 18.9
Put into the formula.
Explanation:
Impulse= Mass* change in velocity, it gives you everything you need to input it into the formula
g Two identical toy cars are held at rest on top of identical ramps. Car A rolls down the ramp, through a loop and then moves along a horizontal surface. Car B starts from rest at the same height, but it does NOT complete the loop. It is found that Car B has a faster speed at the finish line than Car A. What is the BEST explanation for why
Answer:
The kinetic energy of Car B is greater than the kinetic energy of Car A at the finish line.
Explanation:
Both objects have the same kinetic energy at the bottom of the ramp since the ramps are identical. Since Car A passes through the loop, it losses kinetic energy before it gets to the horizontal road and thus decreasing its speed. Car B does not go through the loop so its speed as it gets to the horizontal surface is its speed at the bottom of the ramp.
As both cars move on the horizontal surface, their speed decrease further but since Car B starts with a greater speed than Car A on the horizontal surface, it will end with a greater speed than Car A at the finish line.
This is because, the kinetic energy of Car B is greater than the kinetic energy of Car A at the finish line.
equivalent resistance:
What is the equivalent resistance between points P & Q?
(None of the resistors are the same and the wires are without resistors.)
Answer:
equivalent register what is the equivalent resistance between points P and Q no knows registers are the same and the virus faila