Answer:
the answer is false
Explanation:
A wave travels at a constant velocity through a given material.
hows a 170 g hamster sitting on an 830 g wedge-shaped block. The block, in turn, rests on a spring scale. An extra-fine lubricating oil having μs=μk=0 is sprayed on the top surface of the block, causing the hamster to slide down. Friction between the block and the scale is large enough that the block does not slip on the scale.
The complete question with the scale is missing, so i have attached it.
Answer:
930 g
Explanation:
The block surface is frictionless, therefore, the only force that can possibly be applied to the block from the hamster will be the normal force.
Now, the force of gravity on the hamster acts downward and equals mg. Hence, The normal component will be;
F_n = mgcosθ.
Now, if we Assume that the scale does not respond to horizontal force component, the downward component of the normal force will be expressed as;
F_d = F_n(cosθ)
The scale measures the downward component.
Earlier, we saw that; F_n = mgcosθ
Thus; F_d = mgcosθ × cosθ
F_d = mg(cos²θ)
Now, when the friction was high, the measurement of the scale was;
(m+ M)g
Where ;
m = mass of hamster
M = mass of block
Therefore, when the friction is removed the scale measurement is;
mgcos²θ + Mg or (mcos²θ + M)g
But this is in units of Newton's.
Thus;
Measurement in kg is;
(mcos²θ + M)
We are given;
m = 170 g = 0.17 kg
M = 830 g = 0.83 kg
From the attached scale image,
θ = 40°
Thus;
Measurement = (mcos²θ + M) = ((0.17 cos²40) + 0.83) = 0.93 kg or 930g
what does 1N equal? It happens to be one of the questions on my "Newton's Laws of Motion Exercises" paper.
What are the relationships between the different wave properties (frequency, wavelength, wave speed, period, amplitude)
Ex) As ___ increases, ___ increases/decreases/remains the same.
Answer:
As frequency (cycles per second) increases the wavelength decreases.
As frequency increases the period also decreases
If wave speed or velocity increases, so too does the frequency
Amplitude of a wave is totally independent of frequency, period etc. So it remains the same as frequency shifts. Like FM radio the amplitude remains the same as the frequency of the broadcast modulates.
Explanation:
F= 1/t Frequency is inversely proportional to time (wavelength)
Period is the time it takes for one wave cycle to complete Period is 1/f
++++++++++++++++++++++++++++++++++++
vw=λT Speed of propagation vw= wavelength x T time
vw=fλ Knowing frequency multiply times wavelength to get wave speed.
++++++++++++++++++++++++++++++++
Amplitude varies only as the energy applied varies. Like transmission power, in a 60 hz power feed the amplitude can be 120, 230, 460 volts (note these nominal amplitudes are RMS root mean squared or .707 of the peak of the waveform).
See link below, images are much easier to process, than plain text of course. Hope this helps.
Oops not allowed to post a link, it appears. so try the snippet of URL as attached.
Answer:
Im no expert buh its Wave length. :)
Explanation:
Im taking a test about it hope it helps.
True or False
The ecological niche of a species is the place where its members live.
Answer:
true
Explanation:
A car traveling around a corner
A. position
B. speed
C. velocity
D. acceleration
THE ANSWER IS D THERE YOU GOO
The North American Plate moves at 2.5 cm per year. How many mm does it move in 1 year? Millimeters per day?
The convection currents in the asthenosphere cause the movement of the
A car traveling on 1-96 approached a construction zone and slowed from 65 miles per hour (30 meters/second) to 45 mph (20m/s) in
5 seconds. Calculate the distance the car will take to slow down.
Determine which wave carries the greater
amount of energy. explain
Gizmo seasons why do we have them answer key
If a sprinter accelerates from rest to 12 m/s north , what is their change in velocity ?
Answer: It would be 12 m/s.
Explanation: It would be this because If you go from rest to sprint it would be 12 m/s. Also, I did this the other day.
Which of the following statements is true?
Solar eclipses are safe to look at without special equipment.
The International Date Line runs through Greenwich, England.
New days begin at 180° longitude.
Earth's orbit is a perfect circle.
Answer:
New days begin at 180° longitude.
Explanation:
What is the mass number of a carbon atom which has six protons and
six neutrons.
Answer:
The mass number of carbon atom is 6+6=12
4. Vector A is 7.00 units in length and points along the positive x-axis. Vector B is 5.00 units in length and points along the negative x-axis. find the magnitude and direction of A+2B 1 point
Answer:
Since the two vectors form a right angle, no components need to be found for the resultant vector - we already have them!
Vector R's x-component = 3.00 units
Vector R's y-component = 4.00 units
To solve for the magnitude of the displacement, use the distance formula: Square Root of [(3)^2 + (4)^2], which equals 5 units.
To solve for the direction of the displacement, plug in -4 (remember where it was pointing) for y and 3 for x. Tan-1(-4/3) = -53.13°, or 53.13° south of east.Please Mark as Brilliant
The magnitude of vector C is |C| = 3 and It is directed along the negative x - axis.
What is vector quantity?
A vector quantity is a quantity with both magnitude and direction.
Given is vector A is 7.00 units in length and points along the positive x-axis. and vector B is 5.00 units in length and points along the negative x-axis.
Vector A = 7 a[x]
Vector B = - 5 a[x]
Therefore, the given expression to be evaluated is -
C = A + 2B
C = 7 a[x] + 2(- 5 a[x])
C = 7 a[x] - 10 a[x]
C = - 3 a[x]
So, the magnitude of vector C is -
|C| = 3
It is directed along the negative x - axis.
Therefore, the magnitude of vector C is |C| = 3 and It is directed along the negative x - axis.
To solve more questions on Vectors, visit the link below-
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Typically, people think of a lava flow when they think of volcanoes. However, some eruptions are mostly ash and steam released into the atmosphere. This type of volcanic eruption is blamed for causing what is referred to as a "Little Ice Age" starting in the 13th century. The ash and steam blocked the sun's rays causing extreme cold and agricultural difficulty which lead to massive decreases in populations.
Describe how the energy from the sun is vital to life. In your response, be sure to include:
1. The form(s) of energy that the sun provides to the Earth.
2. How energy from the sun is transformed on the Earth.
3. At least two ways humans depend on the sun's energy for survival.
Answer:
number 2
Explanation:
Which of the following terms represents the debate between genetic and environmental influences on behavior?
A.
stability versus change
B.
continuity versus stages
C.
nature versus nurture
D.
general versus multiple
Answer:
I believe it is nature vs nurture
Explanation:
The term that represents the debate between genetic and environmental influences on behavior is nature versus nurture. Thus, the correct option for this question is C.
What do you mean by Genetic influences?Genetic influences may be defined as the types of concerns that significantly deal with the behavioral and psychological characteristics of an individual which include their intellectual ability, personality, and risk for mental illness with respect to their genetic sequences.
When you talk about the debate between genetic and environmental influences on behavior, the term nature reflects the environmental aspect of the debate while the term nurture reflects the genetic aspects of the debate.
Therefore, nature versus nurture is the term that represents the debate between genetic and environmental influences on behavior. Thus, the correct option for this question is C.
To learn more about Behavior, refer to the link:
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Why is a computer considered technology and not pure science
Answer:
They aren't considered a type of science, they are machine and they are used by produced electricity so they are a type of technology like our cell phones
Explanation:
Question 3 (0.4 points)
What happens to the motion and the distance between atoms in a gas such as air
when it is heated to a higher temperature?
The higher the temperature, the less the particles move, so they move slower
and spread apart.
O Motion and distance of atoms in gas are not related to temperature.
The higher the temperature, the more the particles move, so they move faster
and farther apart.
Please help quickly!
Answer:
As the temperature increases, the molecules and atoms move faster
Explanation:
a class is performing an experiment to keep an ice cube solid as long as possible. Which students actions could be a source of error in this experiment
A. Maria checked her ice cube every half hour and forgot to reseal the container she put the ice cube in
B. Jody used a different experimental design than Carlos used
C. Carey repeated the experiment with three different ice cubes
D. Jerrie measured the ice cube before it started to melt
Answer: the answer Is A. Maria checked her ice cube every half hour and forgot to reseal the container she put the ice cube in
Explanation: I just took the test
Answer:
A
Explanation:
APEX:)
someone help me with this please
Answer: are u single
Explanation:
what are some hack that I can use to heal up my eyes?
Answer:
All 7 Dragonballs
Explanation:
the dragonball Summon shenron which will then grant you a wish
Which two statements describe reasons a solar cell must contain semiconductors?
A. Semiconductors form a path for the electrons that are released by the photoelectric effect.
B. Semiconductors reflect all forms of electromagnetic radiation.
C. Semiconductors serve as a source of electrons to form an electrical current.
D. Current flows from the positively charged semiconductor to the air above the glass covering
Two statements describe reasons a solar cell must contain semiconductors :
A. Semiconductors form a path for the electrons that are released by the photoelectric effect.
C. Semiconductors serve as a source of electrons to form an electrical current.
What is Photoelectric effect?Photoelectric effect, phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation.
When the semiconductor is exposed to light, it absorbs energy and transfers it to the material, due to which energy reaches to negatively charged particle (electron), which allows the electron to flow in the material as electric current .
hence , correct option will be :
A. Semiconductors form a path for the electrons that are released by the photoelectric effect.
C. Semiconductors serve as a source of electrons to form an electrical current.
learn more about photoelectric effect
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APPLYING MAIN IDEAS
How did Bartolomé de Las Casas attempt to help Native Americans?
a.
He petitioned for shortening their workday in the mines.
b.
He convinced Spanish merchants to sell Native American goods around the world.
c.
He asked the king of Spain to enact laws prohibiting their enslavement.
d.
He convinced the Spanish government to grant encomiendas to settlers.
For a substance to change from a liquid to a solid, what must happen to its
particles?
O A. They must lose enough of their kinetic energy that their movement
is influenced by the attractions between them.
B. They must gain enough kinetic energy to allow them to move
freely while still being attracted to one another.
C. They must lose enough of their kinetic energy so that the
attractions between them hold in place as they vibrate.
D. They must gain enough kinetic energy to break out of their rigid
structure and move independently.
Answer:
C. They must lose enough of their kinetic energy so that the attractions between them hold in place as they vibrate.
Explanation:
The "kinetic energy" refers to the energy of an object when it is moving. This is directly proportional to the object's "thermal energy." If the kinetic energy of an object increases, the thermal energy increases and if the kinetic energy decreases, the object's thermal energy decreases as well.
Changing the phase of an object from liquid to solid means that the object will be subjected to low temperature. This means the thermal energy will decrease as well as the kinetic energy. This is known as "freezing." The object needs to lose enough kinetic energy. This results to its particles moving closer together in an attractive force.
So, this explains the answer.
Answer:
Its C
Explanation:
taking the test now
Why is science good for democracy
Answer:
Equitable education in a healthy democracy includes science and engineering learning for every student. Great science and engineering education engage student so that they develop the knowledge and intellectual dispositions to make sense of the natural and designed worlds.
Explanation:
What is the potential energy of a 2 kg plant that is on a windowsill 1.3 m high
Answer:
25.506J
Explanation:
Ep = mgh
given that ,
m = 2kg
h =1.3m
g = 9.81 m/s^2
Ep= 2 × 1.3 × 9.81
Ep= 25.506J
What is the velocity of a plane that took 2 hours to travel 1000 miles north?
A. 500 miles per hour North
B. 500 miles
C. 500 miles North
D. 500 miles per hour
A delivery truck driver's round-trip route from the warehouse takes her 5 km east, then 2 km north, then 5 km west, and then 2 km south. Which of the following statements is FALSE?
they're all right, because he just took a lap and went back to the same starting point,
Drag the tiles to the correct boxes to complete the pairs.
Match the organisms to the descriptions.
scorpion
starfish
octopus
bird
lacks colored blood
had a soft, unsegmented body
is a vertebrate
lacks antennae
The correct matching of the organisms to their descriptions is given below:
Starfish - lacks colored bloodBird - is a vertebrateOctopus - has a soft, unsegmented bodyScorpion - lacks antennaeWhat is an Organism?Any organic, living system that performs as an independent unit is referred to as an organism. Cells comprise all living things. Multicellular mammals, plants, and fungi are examples of multicellular creatures. Unicellular microorganisms include bacteria and archaea.
All kinds of creatures can have the capacity for procreation, growth and development, maintenance, and to some extent, stimulus-response. Multicellular organisms such as beetles, tetrapods, mushrooms, and vascular plants grow a variety of tissues and organs.
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Can someone help me please, thanks.
Answer:
rotation
Explanation:
Im pretty sure. Please heart and mark brainliest
Answer:
cycle
Explanation:
either rotation or cycle. I would think.