Answer:
Reflection involves a change in direction of waves when they bounce off a barrier. Refraction of waves involves a change in the direction of waves as they pass from one medium to another.
Explanation:
What label should mateo place in the marked cell? uses electrical energy provides electrical energy measures electric current controls electric current
The product label which Mateo should place in the marked cell is that it: B. provides electrical energy.
What is a product label?A product label can be defined as a paper-document with specific information about the chemical elements, nutrients, and other chemical compounds that are present in a product and its general use or function.
In this scenario, the product label which Mateo should place in the marked cell shown in the image attached below is that, this product was designed and developed to provide electrical energy, based on the electrical symbol for battery.
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What are the characteristics of the bowling ball that give it lots of momentum?
a. it's big
b. it's heavy
c. it's moving quickly
Answer:
b i think
Explanation:
Which nucleus completes the following equation?
212 86 Rn-> 4 2 He+?
Answer:
A
Explanation:
208+4=212
84+2=86
The correct answer is A
Ultraviolet light is visible to bumblebees but not humans. if the wavelength of *
uv light is 100nm, what is the frequency of the light?
The frequency of the ultraviolet light given that its wavelength is 100 nm is 3×10¹⁵ Hz
Data obtained from the question Wavelength (λ) = 100 nm = 100×10¯⁹ mVelocity of light (v) = 3×10⁸ m/sFrequency (f) =? How to determine the frequency of the lightThe frequency of the light can obtain as illustrated below:
v = λf
3×10⁸ = 100×10¯⁹ × f
Divide both side by 100×10¯⁹
f = 3×10⁸ / 100×10¯⁹
f = 3×10¹⁵ Hz
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if you do 40 j of work in 4s, how much power did you generate?
Explanation:
GIVEN :
Work done(W) = 40 J
Time(t) = 4 s
Power (P) = ?
We know that:
W = P×t
Therefore,
P= W/t
=40/4
= 10 W
Hope it helps
do you expect an echo to return to you more quickly on a hot day or a cold day?
Answer:
more quickly on a hot day
Explanation:
______ is how something feels.
Color
Volume
Length
Temperature
Texture
Answer:
Texture is how something feels.
Choose the force diagram (freebody diagram) that best represents the forces acting on the object.
The effects of air resistance are negligible. (5 points)
A plate that is at rest on the kitchen table:
Answer:
Diagram B because a plate resting on a table has gravity acting on it and normal/air resistance force working against the gravity with the same amount of force. Forces that are balanced don't move.
Explanation:
I hope this helps
Diagram B represents the forces acting on the plate that is at rest on the kitchen table.
What is normal force?Every day, we experience the normal force.
In this instance, when we lay a plate on a kitchen table, the normal response force prevents the plate from going through the table, even if gravity is pulling the plate downward. That implies that there is a force acting to push it upward. The word "normal force" refers to the force. Normal in this context refers to being perpendicular to the ground.
Hence, in diagram B, downwards arrow represents gravitational force acting on the plate for its weight and upwards arrow represents normal force acting on the plate by the table.
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how to convert 54km.h to m.s
Answer:
15m/s[tex] \: [/tex]
Explanation:
Before converting , Let's recall this :
1 km = 1000 metres1 hour = 3600 seconds[tex] \: [/tex]
Now, Let's Convert it :
[tex] \\ \longrightarrow \qquad \sf \: 54km / hr \\ [/tex]
[tex]\\ \longrightarrow \qquad \sf \: \frac{54 \times 1km}{1hr} \\ [/tex]
[tex]\\ \longrightarrow \qquad \sf \: \frac{54 \times 1000m}{3600s} \\ [/tex]
[tex]\\ \longrightarrow \qquad \sf \: \frac{54000 m}{3600s} \\ [/tex]
[tex]\\ \longrightarrow \qquad \sf \: \frac{540\cancel{0 }\cancel{0} m}{36 \cancel{0 }\cancel{0}s} \\ [/tex]
[tex]\\ \longrightarrow \qquad \sf \: \frac{540 m}{36s} \\ [/tex]
[tex] \\ \longrightarrow \qquad \frak{\pmb{ 15m /s}} \\ [/tex]
Explain the difference between the direction of force and the plane of application of force. Use a diagram to help you.
The direction of force refers to the path along which the force acts. The plane of application of force, on the other hand, is the surface or area where the force is applied
What is the difference between the direction of force and the plane of application of force?The direction of force refers to the path along which the force acts. It is the straight line in which the force is being applied. For example, if you push a box on the ground, the direction of force is the line of action of the force vector that points in the direction of the push.
The plane of application of force is the surface or area where the force is applied.
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Water can rise from the roots to the tops of trees due to _____.
A. capillary action
B. solubility
C. surface tension
D. homonuclear bonding
E. All of the above
Water can rise from the roots to the tops of trees due to capillary action. The correct option is A.
What is capillary action?It is the phenomenon by which the liquid rises or falls in a very small diameter tube.
In plants. its roots have very thin diameter tubes which are not visible to the eye. But the water reached to the plants through these tube to every single part of the plant i.e. from root to the fruits.
So, water can rise from the roots to the tops of trees due to capillary action.
Thus, the correct option is A.
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Where does energy go after it hits gas?
In gasoline-powered vehicles, most of the fuel's energy is lost in the engine, primarily as heat. Smaller amounts of energy are lost through engine friction, pumping air into and out of the engine, and combustion inefficiency.
you are designing an airport for small planes. one kind of airplane that might use this airfield must reach a speed before takeoff of at least 27.8m/s and can accelerate at 2.00m/s a)if the runway is 150m long,can this airplane reach the required speed for take off?(in this case v=24.5 m/s) b) if not, what minimum length must the runway have(193m)
(a)The required speed for take off will be 24.49 m/sec.
(b)The minimum length must the runway have 193 m.
What is speed?Speed is defined as the rate of change of the distance or the height attained. it is a time-based quantity. it is denoted by u for the initial speed while v for the final speed. its SI unit is m/sec.
(a)The required speed for take off will be 24.49 m/sec.
From the Newtons third equation of motion;
[tex]\rm v^2 = u^2+2as \\\\ v=0+2 \times 2 \times 150 \\\\ v=\sqrt{600}\\\\ v=24.49 \ m/sec[/tex]
Hence, the required speed for take off will be 24.49 m/sec.
(b)The minimum length must the runway have 193 m.
From the Newtons third equation of motion;
[tex]\rm v^2 = u^2+2as \\\\ (27.78)^2 = 0+2\times 2 s \\\\\ s=192.93 \ m[/tex]
Hence, the minimum length must the runway have 193 m.
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What is the speed of an electromagnetic wave traveling through the air?
use c = 299,792,458 m/s in your calculation.
The speed of an electromagnetic wave traveling through the air will be 2.9 ×10⁸ m/sec.
What is a refractive index?The refractive index of a substance also known as the refraction index or index of refraction is a dimensionless quantity that specifies how quickly light passes through it in optics.
The refractive index is found as;
[tex]\rm n= \frac{c}{v} \\\\ 1.000293=\frac{3 \times 10^8}{v} \\\\ v=2.9 \times 10^8 \ m/sec[/tex]
Hence, the speed of an electromagnetic wave traveling through the air will be 2.9 ×10⁸ m/sec.
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Second choice
Explanation:
I suppose ME is the same as POTENTIAL energy
ME = mgh = 70 * 10 * 12 = 8400j
Half way down, 4200 j is converted to Kinetic Energy
1/2 m v^2 = 4200
1/2 (70) v^2 = 4200 v = 10.95 m/s
Just before impact ALL of the 8400 j is now KE
1/2 (70)v^2 = 8400 v = 15.49 m/s
What might you look for as evidence that fusion occurs inside a star?
Answer: neutrinos
Explanation:
Urgent help needed in number four.
Thank you in advance!
The energy produced by the headlamp at the end of 5 minutes is determined as 1,440 J.
Energy supplied by the lamp
The energy supplied by the lamp is calculated as follows;
E = Pt
E = IVt
where;
I is current = 0.4 AV is voltage = 12 Vt is time = 5 mins = 5 x 60 s = 300 sE = 0.4 x 12 x 300
E = 1,440 J
Thus, the energy produced by the headlamp at the end of 5 minutes is determined as 1,440 J.
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Can someone please answer this, ill give you brainliest Would be very appreciated.
A decrease in the ice caps causes a(n) (options decrease, increase) in the absorption of sunlight. This causes the global temperature to (options rise, fall) causing more ice caps to melt. As more ice caps melt, the temperature (options rises, falls). This is an example of a (options negative, positive) feedback loop.
Answer:
See below ~
Explanation:
A decrease in the ice caps causes a(n) increase in the absorption of sunlight. This cause the global temperature to rise causing more ice caps to melt. As more ice caps melt, the temperature rises. This is an example of a negative feedback loop.
A decrease in the ice caps causes a(n) increase in the absorption of sunlight. This causes the global temperature to rise causing more ice caps to melt. As more ice caps melt, the temperature rises. This is an example of a negative feedback loop.
The options are followed by
IncreaseRiserisesnegativeDescribe the differences between the energy, spacing, andmovement of molecules in a solid, a liquid, and a gas.
At high speeds, gas vibrates and moves freely. The liquid vibrates, moves about, and slides past one another. Solids vibrate (jiggle) but do not move from one location to another.
A 0.025 kg piece of clay is thrown into a wall and has a speed of 9 m/s before it strikes the wall. Find the
change in momentum, of the clay and the impulse exerted on the clay if it does not bounce from the wall.
Answer:
The impulse experienced by the object equals the change in momentum of the object. In equation form, F • t = m • Δ v. In a collision, objects experience an impulse; the impulse causes and is equal to the change in momentum.
Explanation:
When A 0.025 kg piece of clay is thrown into a wall and has a speed of 9 m/s before it strikes the wall then change in momentum 22.5 kg.m/s² is and impulse is 0.225 Ns.
What is Momentum ?Momentum is defined as product of mass and velocity of the body. It is denoted by letter p and it is expressed in kg.m/s.
Mathematically p = mv.
it discuss the moment of the body. body having zero mass or velocity has zero momentum.
The dimensions of the momentum is [M¹ L¹ T⁻¹].
Given,
mass of the clay = 0.025 Kg
Speed of the clay = 9m/s
The momentum of clay is P = mv = 0.025×9 =0.225 kg.m/s
In this problem a piece of clay having mass 0.025 Kg, velocity of clay is 9m/s.
By using formula,
change in momentum of the clay = dp/dt
We must know about change in time in order to calculate change in momentum with respect to time.
Consider that the change in momentum is 0.01s.
dp/dt = p₂-p₁/t₂-t₁ = 0- 0.225/0.01 = 22.5 kg.m/s²
Impulse = dp/dt×Δt = 22.5×0.01 = 0.225 Ns
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sound travels faster in air if the air temperature is:
Can someone please answer this, ill give you brainliest Would be very appreciated.
Answer: A Because that is local I mean it is confined to a city at least i think so
Answer:
Option 3
Explanation:
All of the mentioned options are mitigation solutions. But, the question has clearly asked for local solutions, which means it has the possibility or feasibility to take place in every neighborhood no matter where you are.
The option which correctly gives this is :
An individual elects to walk or bike to work dailyWhich of the following is NOT true in terms of what to consider when judging eye witness accounts?
the type of crime and how the witness saw the incident
interviewing techniques can affect eye witness accounts
open-ended questions do not often get better answers
The statement that is not true about in
terms of what to consider when judging eye witness accounts is the type of crime and how the witness saw the incident.
What is Judgement?Judgement is a decree, or decision or conclusion on a subject matter when there is an offence or someone did wat is wrong . It can be to vindicate and to punish for a crime.
Therefore, The statement that is not true about in terms of what to consider when judging eye witness accounts is the type of crime and how the witness saw the incident
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The human pupil, when maximally dilated, has a diameter of roughly 10 mm. How much more light does the primary mirror of the Magellan telescope (measuring 6 m in diameter) collect compared to the human eye
The amount of light collected by Magellan telescope with respect to human eyes is 1.13 x 10⁶ times that of human pupil.
Amount of light collect by human pupilThe amount of light that will pass through the given area of human pupil when maximally dilated is calculated as follows;
A = πd²/4
A = π(0.01)²/4
A = 2.5 x 10⁻⁵π m²
Amount of light collect by Magellan telescopeA = πd²/4
A = π(6)²/4
A = 9π m²
with respect to human eyes = ( 9π m²)/(2.5 x 10⁻⁵π m²)
= 1.13 x 10⁶ x human pupil
Thus, the amount of light collected by Magellan telescope with respect to human eyes is 1.13 x 10⁶ times that of human pupil.
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A wave travels at 18 m/s and has a wavelength of 3 meters. What is the frequency of the wave?
Answer:
0.1667Hz
Explanation:
by explanation frequency is given by 1/time
after carrying out the calculation of time we can easily get frequency.
time=speed/distance
=18/3
=6s
but frequency=1/time
hence=1/6
=0.1667hertz
An electromagnetic am-band radio wave could have a wavelength of.
An electromagnetic AM-band radio wave could have a wavelength of 186.6 meters.
Wavelength is the distance between two consecutive points on a wave that are in phase, meaning they are at the same position in their respective cycles. It is usually denoted by the Greek letter lambda (λ) and is measured in units of length, such as meters, centimeters, or nanometers.
The relationship between wavelength, frequency, and speed of a wave is given by the formula:
wavelength = speed / frequency
where "speed" refers to the speed of the wave through a medium, and "frequency" refers to the number of cycles per second.
The AM radio band frequency ranges from 535 kHz to 1605 kHz. To find the wavelength of the AM radio wave, we can use the formula:
wavelength = speed of light / frequency
where the speed of light is approximately 299,792,458 meters per second.
Let's take the highest frequency in the AM radio band, which is 1605 kHz. We need to convert this frequency to Hertz (Hz) by multiplying it by 1000 since kHz is 10^3 times larger than Hz.
1605 kHz = 1605 x 1000 Hz = 1,605,000 Hz
Now, we can calculate the wavelength of the AM radio wave using the formula:
wavelength = 299,792,458 / 1,605,000
wavelength ≈ 186.6 meters
Therefore, an electromagnetic AM-band radio wave could have a wavelength of approximately 186.6 meters.
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What is a hydrometer?
Answer:
an instrument for measuring the density of liquids.
Explanation:
Most asteroids orbit the Sun between:
A.
Mercury and Venus.
B.
Mars and Jupiter.
C.
Neptune and Pluto.
D.
Saturn and Uranus.
Answer:
mars and jupiterrr
Explanation:
ty for all ur help love u
QUESTION 1
1.1 Define the term acceleration in words
Answer:
To be better at something
Explanation:
I have Accelerated at cooking
Answer:
Acceleration means to speed up
Explanation:
Could a person survive in a falling lift if they jumped as it hits the ground?
Answer:
Expect a broken leg or two, but you'll live, Some part of your body must absorb the impact, but head injury is the primary cause of death in falls.
Explanation:
