Answer:
is there a picture? so I can understand it more and it will be easier for me to answer. thank you
Answer:
The second one is more accurate because we were able to draw more precisely and accurately, the first picture was more of a general idea of the picture and the second picture was more of a detailed version.
Explanation:
I just did this assignment and this is what I turned in so yeah I hope this is good enough, if you need more of an explanation though ill try to lengthen it. =]
If the temperature of water in which the sound wave travels
decreases from 90°C to 50°C, then what will happen to the
velocity of the wave?
till
The sound wave travels faster at higher temperatures and slower at lower temperatures.
What will happen to the velocity of the wave if the temperature decreases?At a lower temperature, particles of the medium are moving more slowly as compared to higher temperature. Due to lower temperature, longer time is required to transfer the energy of the sound waves.
So we can conclude that sound travels faster at higher temperatures and slower at lower temperatures.
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Answer:
It will travel slower
Explanation:
how are the four chambers in the heart connected by it
Answer:
I think it is atrioventricular valves
Explanation:
hope this helps
a. How far does a 100-newton force have to move to do 1,000 joules
of work?
b. An electric hoist does 500 joules of work lifting a crate 2 meters. How
much force does the hoist use?
c. An athlete does one push-up. In the process, she moves half of her body
weight, 250 newtons, a distance of 20 centimeters. This distance is the
distance her center of gravity moves when she fully extends her arms. How
much work did she do after one push-up?
d. You decide to push on a brick wall with all your might for 5 minutes. You
push so hard that you begin to sweat. However, the wall does not move. If
you end up pushing with a force of 500 newtons, how much work did you
do?
Work done by a force is given as the product of force and the distance moved by the force.
What is work done?Work done is the product of force and the distance moved by the the force.
Work done = Force × distanceThus, distance required by the 100 N force is given as:
Distance = work done/forceDistance = 1000/100 = 10 m
Distance to be moved is 10 m.
Force applied = work done/ distance
Force applied by the hoist = 500/2
Force applied by the hoist = 250 N
Distance moved in one push-up = 25 cm = 0.25 m
Work done by the athlete after one push-up = 250 × 0.25 m
Work done by the athlete = 62.5 J
Distance moved by the force = 0 m
Work done = 500 × 0 = 0 N
Therefore, for work to be done, force has to move a distance.
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Magnetism is due to the movement of ______.
Answer:
electrons
Explanation:
Brainliest
[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]
Magnetism is due to the movement of charge
Both magnetic fields are caused due to attraction and repulsion of charges, where electric fields is caused by stationary charges, while magnetic fields are caused by moving charges
why didn't the geologists include dates in the notes for the sedimentary rock layers?
Answer:
To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.
1. When a net force F acts on an object of mass M, the object accelerates at 16 m/s². An equal net force F acts on a second object of mass 2M. What is the acceleration of this second object?
Use the formula KE = 0. 5 mv2. What is the velocity of a platform diver if her kinetic energy is 12,000 J and her mass is
40 kg?
[tex]\text{Kinetic energy,}\\\\~~~~E_k = \dfrac 12 mv^2\\\\\implies v^2 = \dfrac{2 E_k}m\\\\\implies v = \sqrt{\dfrac{2E_k}m}\\\\\implies v = \sqrt{\dfrac{2 \times 12000}{40}}\\\\\implies v = 24.49~~ \text{ms}^{-1}\\\\\text{Velocity of the platform diver is 24.49 m/s}[/tex]
What is the overall energy transformation in a coal-fired power plant?.
Answer: thermal energy, mechanical energy and, finally, electrical energy.
Explanation:
As a type of thermal power station, a coal-fired power station converts chemical energy stored in coal successively into thermal energy, mechanical energy and, finally, electrical energy. The coal is usually pulverized and then burned in a pulverized coal-fired boiler.
A brick is sitting motionless on top of a wall. What type of energy does it have? (1 point)
A) geothermal energy
B) electromagnetic energy
C) potential energy
D) kinetic energy
The block that is sitting motionless on top of a wall contains potential energy.
What is energy?Energy is the ability to do work. There are several forms of energy. For the block that is sitting motionless on top of a wall, the block contains potential energy.
The potential energy is the block is used to do work when the block falls. The block can break a piece of glass on the floor due to the energy that it contains.
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What is the definition of a surface wave?
Answer:
A surface wave is a wave that travels on the crust of the earth after an earthquake; surface waves cause the destruction of an earthquake
Explanation:
A surface wave is a wave that travels on the crust of the earth after an earthquake; surface waves cause the destruction of an earthquake
How long would it take a machine to do 5000 joules of work if the power rating of the machine is 100 watts?
A. 0.2 s
B. 10 s
C. 50 s
D. 5 000 s
Answer:
hope this he;ps
Explanation:
power = work ÷ time
time = work ÷ power
time = 5,000 J ÷ 100 W
time = 50 s
Who should be the cert team leader's first concern?
Answer:
to ensure the safety of those in need
Explanation:
Suppose that a sound wave has a wavelength of 12 meters and a frequency of 100Hz. What is the speed of sound
Answer:
1200Hz
Explanation:
You would have to multiply 12 by 100 to get the answer.
12 • 100 = 1200 Hz
I hope it helps! Have a great day!
Anygays-
A diesel engine has an efficiency rating of 50%. One gallon of diesel contains 146,520,000 Joules of energy. A dodge 1 ton truck gets 24km per gallon, fuel economy. With that information, calculate how much Force it requires for a dodge 1 ton truck to drive 2 km.
PLEASE HELP!
Sally and sam were building simple circuits in science class. they used d-cell batteries as an energy source. what kind of energy is found in batteries? question 1 options: potential light energy potential elastic energy potential chemical energy potential electrical energy
Answer:
option 3 potential chemical energy
acceleration can occur when a car is moving at a constant speed. what must cause this acceleration?
Need help asap
Describe the subatomic particles of an atom and where they are located.
↪Nucleons include protons and neutrons. All the positive charge of an atom is contained in the nucleus, and originates from the protons. Neutrons are neutrally-charged. Electrons, which are negatively-charged, are located outside of the nucleus.
☆...hope this helps...☆
_♡_mashi_♡_
The nucleus of an atom of any chemical element comprises three (3) distinct subatomic particles and these are:
ProtonsNeutronsElectronsWhat is an atom?An atom simply refers to the smallest, basic (fundamental) and indivisible unit which comprises the matter that forms all chemical elements.
The subatomic particles of elements.Based on scientific information, the nucleus of an atom of any chemical element comprises three (3) distinct subatomic particles and these include the following;
Protons: they are positively charged and located within (inside) the nucleus of an atom.Neutrons: they are neutrally charged and located within (inside) the nucleus of an atom.Electrons: they are negatively charged and located outside the nucleus of an atom.Read more on atoms here: brainly.com/question/377844
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whay happen to your eyes when you suddenly exit out of s cinema hall?why?
Answer:
They take a little bit to adjust to the light.
Explanation:
Because being in the dark cinema for so long, out eyes had gotten used to it being that dark while watching the movie. When we leave or go outside from it, it is a lot brighter out and our eyes arent adjusted.
What is the SI (metric) unit of FORCE?
A. meter
B. newton
What is the SI (metric) unit of FORCE?
B. newtonwith symbol ( N )
All the best !
Answer:
B, Newton,
Explanation:
B. Newton defined as the Force which when applied to 1 Kg mass produces an acceleration of 1 m/s/s.
F = m * a.
please answerrrr need this asapppp
Answer:
A
Explanation:
It depends on the scale of the volcanic eruption. A smaller eruption may only affect the nearby area, but a large one can affect the whole world. For example, the Krakatoa eruption of 1883 created an ash cloud which lowered global temperatures and affected the climate for a year afterwards.
An explosive eruption by a single volcano can affect only the lifeforms living on the volcano. The correct option is B.
What is a volcano?A volcano is an opening in the Earth's surface through which molten rock, ash, and gas can escape. Volcanoes are formed by the movement of tectonic plates, which create weak spots or vents in the Earth's crust where magma can rise to the surface.
Volcanoes can form in different ways, but most are formed at plate boundaries, where one tectonic plate is moving under another (subduction zone), or where two plates are moving away from each other (divergent boundary). When magma rises to the surface, it can form a volcanic cone or mountain over time.
There are three main types of volcanoes, based on their shape and the type of eruptions they produce:
(i)Shield volcanoes - broad, gentle slopes formed by lava flows that spread out over a wide area.
(ii)Stratovolcanoes (also called composite volcanoes) - tall, steep-sided cones formed by alternating layers of lava, ash, and other volcanic debris.
(iii)Calderas - large, basin-shaped depressions that form when a volcano collapses or erupts so forcefully that it empties its magma chamber.
Volcanoes can be active, dormant, or extinct. Active volcanoes are those that have erupted recently or are expected to erupt soon, while dormant volcanoes have not erupted in a long time but could still erupt in the future. Extinct volcanoes are those that have not erupted in thousands of years and are unlikely to erupt again.
Here in the question,
An explosive eruption by a single volcano can have a significant impact on the surrounding environment and local communities, but its effects are generally limited to the immediate vicinity of the volcano. The eruption may release ash, gases, and lava flows that can cause damage to nearby ecosystems and affect the health of humans and animals living in the area. However, the effects are unlikely to extend beyond the local region, let alone affect lifeforms throughout the world.
Therefore, B. only the lifeforms living on the volcano, is the correct option.
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What makes electromagnets more useful that permanent magnets for sorting metals in recycling centers? A. An electromagnet can separate iron from other metals, but a permanent magnet attracts all types of metal. O B. An electromagnet is always "on" but a permanent magnet has to be turned on and off. C. An electromagnet also attracts metals other than iron, but a permanent magnet attracts only iron. D. An electromagnet can be turned on and off, but a permanent magnet is always "on."
Answer:
D
Explanation:
Kinetic energy is proportional to?
v2
work
v
a
Hi! Look below
KE=1/2mv²Hence
[tex]\\ \rm\Rrightarrow KE\propto m[/tex]
[tex]\\ \rm\Rrightarrow KE\propto v^2[/tex]
Option A
Answer:
A. V²
Explanation:
The kinetic energy of a body is the energy by virtue of its motion.
[tex]k.e = \frac{1}{2 }m v {}^{2} [/tex]
Where V is the velocity
and m is the mass
1/2 is the constant term. So we can write as
K.Eαm and K.E.αv²
Which of the following is a consequence of the special theory of relativity?
A) A moving object's mass is constant regardless of its speed.
B) Time slows as the speed of an observer's frame of reference increases
C) A stretching of time due to a moving object can be seen under normal conditions
D) It is possible for an object with mass to travel at the speed of light.
Answer:
D.
Explanation:
Specifically, Special Relativity showed us that space and time are not independent of one another but can be mixed into each other and therefore must be considered as the same object, which we shall denote as space-time. The consequences of space/time mixing are: time dilation. and length contraction.
Help please I am stuck
Answer:
ADCACExplanation:
A machine puts out 100 watts of power for every 1000 watts put into it. The efficiency of the machine is 50%. 90%. 10%. 110%. none of the above
Answer:
Explanation: 10%
Ydu have 50g of water in a beaker, and the water is 24 degrees Celsius. If
you divide the water into two beakers, with 25g in each beaker, what is
the temperature of each one?
If 50g of water in a beaker is split into two beakers i.e. 25g in each beaker, the temperature of each of one will still be 24°C.
What is temperature?Temperature is the degree of hotness or coldness of a body. Temperature is measured in °C.
According to this question, there is 50g of water in a beaker, and the water is 24 degrees Celsius.
If I divide the water into two beakers, with 25g in each beaker, the temperature of the water in each beaker will be 24°C.
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Which equation expresses the conservation of mechanical energy in a system where the only forms of mechanical energy are kinetic energy and elastic potential energy?
a.
1/2mvi2 + mghi = 1/2mvf2 + mghf
b.
1/2mvi2 + mghi + 1/2kxi2 = 1/2mvf2 + mghf + 1/2kxf2
c.
1/2mvi2 + 1/2kxi2 = 1/2mvf2 + 1/2kxf2
d.
mei = mef
c it hink this because im geuss
what does Constant / Controlled Variable mean in science
Answer:
variable that doesnt change
Explanation:
contolled variable is that variable that does not change throughout the course of the experiment
Barton conducts an experiment using three metallic bars that might be magnets. the bars are labeled a, b, and c. the ends of each bar are numbered 1 or 2. 3 rectangles aligned horizontally end to end. the first has 1 a 2 on it. the second has 1 b 2 on it. the third has 1 c 2 on it. he places the end of one bar close to an end of a second bar and records his results in the table shown. a 3 column table with 3 rows. the first column is labeled end with entries a 1, a 2, b 2. the second column is labeled end with entries b 1, c 1, a 1. the last column is labeled result with entries attract, repel, attract. based on the data, which prediction should he expect to occur? a2 repels b1. c2 attracts b2. b1 repels c1. a1 attracts c2.
The prediction should the expect to occur will be C₂ attracts B₂. This is due to the fact that like charges repel while the unlike charges attract each other.
What is a magnet?A magnet is an iron piece or of other material with its constituent atoms arranged in such a way that it shows magnetism qualities,
Like charge attracting different iron-containing objects or engaging itself in a magnetic field.
The given metallic bars are A, B, and C. Every end of the magnet is denoted with the 1 and 2.
The denotation to the magnet is given as;
A₁A₂
B₁B₂
C₁C₂
He places the end of one bar close to an end of a second bar. The end of magnets C₂ and B₂ are of unlike charges. As we know that the unlike charges attract each other.
So that the C₂ and B₂ due to the unlike charge ends attract each other.
Hence the prediction should the expected to occur will be C₂ attracts B₂
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Answer:
b
Explanation:
so you dont have to read the long one
The lens parameter that enables us to brighten an image is _(blank)_.
A. diameter
B. refractive index
C. curvature radius
D. focal length
The lens parameter that enables us to brighten an image is called" Refractive Index"
What is refractive Index?Refractive index of a material is a dimensionless number that describes how fast light travels through the material. Refractive Index is a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density.
Therefore, refractive index is the lens parameter that enables us to brighten an image.
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Answer:
The correct answer is DIAMETER. Just took the quiz
Explanation
