Motion is
displacement
an object you look at to determine if something is moving
a change of position in relation to another object
speed
Answer:
a change of position in relation to another object.
Explanation:
Motion can be defined as a change in the location (position) of a physical object or body with respect to a reference point.
This ultimately implies that, motion would occur as a result of a change in location (position) of an object with respect to a reference point or frame of reference i.e where it was standing before the effect of an external force.
A reference point refers to a location or physical object from which the motion (movement) of another physical object or body can be determined.
Mathematically, the motion of an object is described in terms of acceleration, time, distance, speed, velocity, displacement, position, etc.
Hence, motion is a change of position in relation to another object.
A light beam with a 70° angle of incidence travels through a medium with an index of refraction of 1.8. The light enters a second medium and has an angle of refraction of 37°. What is the index of refraction of the second medium?
Answer:
Explanation:
For refraction , the formula is
sin i / sin r = μ₂ / μ₁
where light is travelling from medium 1 to 2 having refractive index of μ₁ and μ₂ . Angle of incidence in medium 1 is i and angle of refraction in medium 2 is r .
Here i = 70°, r = 37°
μ₁ = 1.8 ,μ₂ = ?
sin70 / sin 37 = μ₂ / 1.8
.939 / .602 = μ₂ / 1.8
1.56 = μ₂ / 1.8
μ₂ = 2.81 .
The value of refraction index for the second medium will be [tex]\mu_2=2.16[/tex]
What will be the refractive index?Every material has a different refractive index. The refracted index of any material shows that the light is refracted by how much angle.
So like for water its value will be different also for glass its value will be different.
Now it is given in the question that
Angle of incidence [tex]i=70^o[/tex]
Refractive index of the first medium [tex]\mu_1=1.8[/tex]
Angle of refraction [tex]r=37^o[/tex]
Now from snells law
[tex]\dfrac{Sin \ i}{Sin \ r} = \dfrac{\mu_2}{\mu_1}[/tex]
[tex]\dfrac{Sin70}{Sin37} = \dfrac{\mu_2}{1.8}[/tex]
[tex]\mu_2= \dfrac{Sin70\times1.8}{Sin37}[/tex]
[tex]\mu_2=2.16[/tex]
Thus the value of the refraction index for the second medium will be [tex]\mu_2=2.16[/tex]
To know more about the Refractive index follow
https://brainly.com/question/10729741
name one property you know about LIGHT. Explain.
Answer:
The primary properties of visible light are intensity, propagation-direction, frequency or wavelength spectrum and polarization, while its speed in a vacuum, 299 792 458 m/s, is one of the fundamental constants of nature.
Explanation:
Light is made of particles called photons, bundles of the electromagnetic field that carry a specific amount of energy. With sufficiently sensitive experiments, you can count photons or even perform measurements on a single one. Researchers have even frozen light temporarily.
Hope this Helps :)
If it is the first day of Winter in the Northern Hemisphere, what day is it in the Southern Hemisphere?
Answer:summer
Explanation:
Answer:
first day of summer
Explanation:
Mr. LaCosta is making a circular garden for our outdoor green space. The garden has a diameter of 11m. He has to buy plastic fencing to put around the edge. The fencing costs $5.75/m. What would be the total cost before taxes?
Answer:
The total cost before taxes to fence the garden is approximately $198.71
Explanation:
The given parameters for the garden are;
The diameter of the garden, D = 11 m
The cost of the fencing, UnitC = $5.75/m
The circumference of a circle, C = π·D
Therefore, the perimeter of the garden, C = π × 11 m ≈ 34.5575 m
The total cost before taxes to fence the garden, T = C × UnitC
∴ The total cost before taxes to fence the garden, T, is given as follows;
T ≈ 34.5575 m × $5.75/m ≈ $198.71
The total cost before taxes to fence the garden, T ≈ $198.71
Temperature and kinetic energy have a________
relationship.
A 1500 kg car accelerates at 3 m/s^2. What is the net force acting on the car?
Answer:
4500N
Explanation:
Force =mass into acceleration
So 1500 into 3 you will get 4500
Newton's second law predicts that when a nonzero net force is applied to a box, the box will
A. move at constant velocity.
B. move at constant speed.
c. accelerate.
D. do all of the above.
Answer:
C
Explanation:
this is because newton's second law states that if a resultant force acts on an object, then it will accelerate in the direction of the resultant force
so if there is a non zero resultant force, it means that there is a resultant force, so for every resultant force, there is acceleration
since the equation states it
F = ma
hope this helps
please mark
the letter R in the world Warm reminds you that warm air does what
what is the average speed of an athlete who runs 1500m in 4minuites
Answer:
375m per minute
Explanation:
Just divide 1,500 by 4 and you will get your answer!
Answer:
375 meters per minute
Explanation:
it is that much
In aluminum, the speed of sound is 5100 m/s What the wavelength a sound wave of middle C at 264 Hz traveling through aluminum?
Answer:
19.32
Explanation:
the wavelength formula is speed divided by frequency
speed = 5100m/s
frequency = 264Hz
so wavelength = 5100 m/s / 263 Hz
= 19.32
Can scientific laws be changed by a vote
Answer:
No, because a scientific law is always absolutely true, no matter what a vote could not change a scientific law. People can vote how fast the speed of light is per second, but light will always be the speed it is no matter what.
Answer These questions and you will get the brain list
Answer:
1)gravitational force
tension
normal reaction
friction
electromagnetic force
(not so sure about the 1st question)
2)friction is the resisting force applied by the surface on a moving object or object which tries to move.
3)F=ma
=500kg*5ms^-2
=2500N
Describe how an electric current flows through a conductor. ( use human being as a wire )
Answer:
human body contain 80% water and water is a good condition of current because our body fluid contain different type of salt that increase the current conductivity
What is the angle of incidence of a wave if its angle of reflection is 20 degrees?
a) 10
b) 70
c) 20
Your answer is:
c) 20°
∝ Sidhdi
HELP
as shown in the diagram, points p,q, and r are located near a positively charged object.
What are the energy transformations that occur during a roller coaster ride? 1 paragraph
Answer:
The movement of a roller coaster is accomplished by the conversion of potential energy to kinetic energy. The roller coaster cars gain potential energy as they are pulled to the top of the first hill. As the cars descend the potential energy is converted to kinetic energy. Roller coasters rely on gravity to take them to the end of the track. This involves two types of energy, potential energy and kinetic energy.
Explanation: my mom told me lol ..
Answer:
The movement of a roller coaster is accomplished by the conversion of potential energy to kinetic energy. The roller coaster cars gain potential energy as they are pulled to the top of the first hill. As the cars descend the potential energy is converted to kinetic energy.
Explanation:
That's gonna help right?
How are rocks weathered as in this example seen here?A) The rocks change their composition. B) The rocks are being chemically weathered by the water. C) Freezing and thawing of water breaks the rocks into pieces. D) Hot lava is pushing on the rock and breaking it into pieces.
Answer:
Is there a picture-
Explanation:
The rock weathered as in this example seen here is freezing and the thawing of water breaks the rocks into pieces. The correct option is C).
What is rock weathering?By interacting with water, atmospheric gases, and living beings, weathering is the disintegration of rocks, soils, minerals, as well as wood and man-made objects. In contrast to erosion, which involves the movement of minerals and rocks caused by forces like water, waves, and gravity, weathering takes place in its natural environment.
The two different kinds of weathering processes are chemical aging and physical aging. The mechanical deterioration of rocks brought on by heat, rain, ice, or other elements is referred to as physical weathering.
Chemical weathering is the interaction of rocks and soils with water, atmospheric impacts, and biologically generated substances. Physical weathering is mostly caused by water, while oxygen molecules in the atmosphere and biological activity also play a part.
Therefore, the correct option is C) Freezing and thawing of water break the rocks into pieces.
To learn more about rock weathering, refer to the link:
https://brainly.com/question/28755105
#SPJ5
The question is incomplete. Your most probably complete question is given below: the image is added.
i truly need help with these 10 questions , it soo late and i only have 2 days too turn it in please anybody help me !!
A gold bar contains 63.0 mol of gold, Au(s). How many atoms of gold are in the bar?
Answer:
63.0 x (6.02 x 10^23) = 3.79 x 10^25 atoms of gold
Explanation:
There are 6.02 x 10^23 representative particles in a mole of any substance. Multiply it by the number of moles, and you will get the number of representative particles (atoms, molecules, formula units)
What part of the cell uses the glucose from the breakdown of carbohydrates to make ATP?
a]chloroplast
b]ribosome
c]cell membrane
d]mitochondria
Which of the following is an uncontrollable risk factor for myocardial infarction?
weight gain
age
poor diet
cigarette smoking
PLEASE PLEASE PLEASE PLEASE PLEASE HELP!!!!!!!!
A car traveled 88 km in 1.0 hour, 91 km in the next 2.0 hours, and then 76 km in 1.0 hour before reaching its destination. What was the car’s average speed?
Answer:
64 km/h
Explanation:
How should i fix an overfilled ballon? its my sisters 3rd birthday and i have overfilled all the ballons and there is no other option left than to only fix those ballons.please help.i am so nervous right now.
When a warm air mass collides with a cold air mass, the warm air mass rises above the cold air mass leading too:
A) Sunny skies
B) Global warming
C) The formation of clouds and rain
D) Volcanic eruptions
Answer: It leads to a front. A front is.., I don't know how to explain it, so I'll add a picture. Fronts are made out of clouds and usually bring rain. So the answer is C: The formation of clouds and rain.
Explanation:
A 8.73-g bullet is moving horizontally with a velocity of 345 m/s, where the sign indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The bullet passes completely through the first block (an inelastic collision) and embeds itself in the second one, as indicated in part b. Note that both blocks are moving after the collision with the bullet. The mass of the first block is 1201 g, and its velocity is 0.714 m/s after the bullet passes through it. The mass of the second block is 1606 g. (a) What is the velocity of the second block after the bullet imbeds itself
Answer:
v₃ = 1.334 m/s
Explanation:
This problem can be solved using the law of conservation of momentum:
[tex]m_{1}u_{1} + m_{2}u_{2} + m_{3}u_{3} = m_{1}v_{1} + m_{2}v_{2} + m_{3}v_{3}\\[/tex]
m₁ = mass of bullet = 8.73 g = 0.00873 kg
m₂ = mass of first block = 1201 g = 1.201 kg
m₃ = mass of second block = 1606 g = 1.606 kg
u₁ = initial speed of bullet = 345 m/s
u₂ = initial speed of first block = 0 m/s
u₃ = initial speed of second block = 0 m/s
v₁ = final speed of bullet = v₃ (since the bullet is embedded in second block)
v₂ = final speed of first block = 0.714 m/s
v₃ = final speed of second block = ?
Therefore,
[tex](0.00873\ kg)(345\ m/s)+(1.201\ kg)(0\ m/s)+(1.606\ kg)(0\ m/s)=(0.00873\ kg)(v_{3})+(1.201\ kg)(0.714\ m/s)+(1.606\ kg)(v_{3})[/tex]
[tex]3.0118\ kg.m/s - 0.8575\ kg.m/s = (1.6147\ kg)(v_{3})\\\\v_{3} = \frac{2.1543\ kg.m/s}{1.6147\ kg} \\[/tex]
v₃ = 1.334 m/s
When calculating speed, are you calculating the fastest speed, average speed, or slowest speed?
Answer:
Speed tells us how fast something or someone is traveling. You can find the average speed of an object if you know the distance travelled and the time it took. The formula for speed is speed = distance ÷ time.
Explanation:
Doubling one's speed would mean doubling one's distance traveled in a given amount of time. ... In order to calculate the speed of an object we must know how far it's gone and ... The slowest speeds are measured over the longest time periods.
I hope this helps :)
Answer:
Average speed.
Explanation: While calculating speed, we take the total distance divided by the total time taken.
Example: An object took 6 minutes to cover 30 meters. To calculate the average speed we need to do the following:
Distance/Time= Average speed
30/6=5
Therefore the average speed is 5 m/s.
How much electricity is used to boil 600 g of water if the kettle has a power of 1500 W? The water boiled for 3 minutes and 9 seconds. Water density is 1000 kg/m3, specific heat of water is 4200 J/(kg· oC).
Answer:
The electrical energy consumed in boiling the water is 0.0788 kWh
Explanation:
Given;
mass of the water, m = 600 g = 0.6 kg
power rating of the kettle, P = 1500 W = 1.5 kW
specific heat capacity of water, c = 4,200 J/kg⁰C
density of water, = 1000 kg/m³
time taken to boil the water, t = 3 mins + 9 s = (3 x 60s) + 9 s = 180 s + 9 s = 189 s = [tex]189 \ s \times \frac{1 hr}{3.600 \ s} = 0.0525 \ hr[/tex]
The electrical energy consumed in boiling the water is calculated as;
E = P x t
E = 1.5 kW x 0.0525 hr
E = 0.0788 kWh
Therefore, the electrical energy consumed in boiling the water is 0.0788 kWh
What are some possible sources of motion that could be harnessed for a generator?
Explanation:
There are multiple other sources of kinetic energy that can be harnessed for electricity. Wind-powered turbines can create energy through windmills or wind-power generators. Wind energy is harnessed into kinetic energy by turning panels that are designed and angled to catch as much wind as possible.
I bet no one can solve this :)
Answer:
it's D
Explanation:
The current can run through R because it is practically a closed circuit by itself so the lamp would be lit but, with S and T the current can not flow and light the lamps because the switch is open.