Answer:
-2 m/s²
Explanation:
What is the kinetic energy of a bicycle with a mass of 14 kg traveling at a
velocity of 3.0 m/s?
46.6666 that is the mass number
Explanation:
14 divided 3.0
which of the following statement is correct?
a. Reflecting telescope uses convex lenses while refracting telescopes uses concave lenses.
b. both telescopes are using the combination of concave and convex lenses.
c. Reflecting telescope uses a concave lenses while refracting telescopes uses convex lenses.
d. None of the the statements above are correct.
Answer:
D. None of the the statements above are correct.
Explanation:
Microscopes and telescopes are major instruments that have contributed hugely to our current understanding of the micro- and macroscopic worlds. The invention of these devices led to numerous discoveries in disciplines such as physics, astronomy, and biology, to name a few. In this section, we explain the basic physics that make these instruments work.
Answer:
d. is the answer hope it helps
a roller skater starts from rest (velocity initial=0m/s) and speeds up a final velocity (10m/s) what is the acceleration during a time of 2 seconds
Answer:
10-0÷2=5 that's the answer
SORRY LAST ONE FOR TODAY, IM GOING TO PASS IF I GET THIS ANSWERED
A cannon fires a cannonball directly upwards at +150m/s. How long does it take for the cannonball to reach maximum height?
Answer:
According to the Given Statement
Canon fires directly upwarda at 150m/s ( Initial speed, u )
Acceleration due to gravity is 10m/s²
Since Cannon ball reach it maximum height so its final velocity v will be 0 m/s .
Using Kinematic Equation
v = u + gtOn substituting the value we get
➥ 0 = 150 + 10 × t
➥ 150 = 10 × t
➥ 150/10 = t
➥ 15 s = t
So, it will take 15 seconds .
Answer:
maximum height reached: 15 s
Explanation:
using the formula: maximum height reached = [(sin(θ) * speed)/ gravity]
Here speed is 150m/s and gravity is 10 m/s² and as it does directly upwards, it has an angle of 90°
using the formula:
maximum height reached = [(sin(90) * 150)/ 10] = 15 s
The bending of a wave through an opening in a barrier is:
refraction
resonance
diffraction
interference
What is the stretch when you pull with a force of 25 N on a spring with a spring constant of 8 N/m? *
0.06 m
1.28 m
3.13 m
0.12 m
Hooke's Law
[tex]\tt F=k.\Delta x[/tex]
k = spring constant
x = stretch
F = force
Input the value
[tex]\tt \Delta x=\dfrac{F}{k}=\dfrac{25}{8}=3.125\rightarrow 3.13\:m[/tex]
If a spaceship weighs 2500kg and is traveling at the speed of light, how much energy does the ship have?
Answer:
Explanation:
KE = 1/2mv²
speed of light = 299,792,458
≅300,000,000 m/s
KE = 1/2 X 2500kg x 300,000,000²
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Answer: Sorry the pic is too blurry try making the resolution higher
Why is it important to study chemical reactions in closed containers?
Answer: becaue they can burn your body part it i important to tudy chemicals in cloed container
Explanation:
Answer:
There are plenty of reasons why. For some reactions, the system needs to be closed to avoid any alterations to the reaction. It can also be for protection, repeatability, and consistency.
How are alloys different than metallic elements?
While alloys are melted mixtures of two or more metals, true metals are unadulterated components. Due to their tendency to be shinier, heavier, and harder than the majority of materials, as well as the fact that they are great heat- and electricity-conductors, metals, and alloys are simple to differentiate from nonmetals.
What are alloys?As a compound or a solution, an alloy is a metallic material made up of two or more elements. Although carbon, a nonmetal, is a crucial component of steel, alloys typically contain metals as their own constituents.
Typically, the mixture of elements is melted to create an alloy. In very early periods, the value of alloys was discovered; brass (copper and zinc) and bronze (copper and tin) were particularly significant.
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A rubber ball that sits motionless near the edge of a tall bookshelf has no kinetic energy. However, it does have mechanical
energy. Explain why this is possible,
It is possible because the rubber ball has mechanical energy which is equal to potential energy.
What is mechanical energy?
Mechanical energy of an object is the total energy possessed by the object, including the potential energy and the kinetic energy.
M.A = K.E + P.E
What is kinetic energy?Kinetic energy is the energy possessed by an object due to its motion.
What is potential energy?Potential energy is the energy possessed by an object due to its position.
When kinetic energy (K.E) = 0
M.A = P.E
Thus, it is possible because the rubber ball has mechanical energy which is equal to potential energy.
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help ASAP plsss (help is appreciated and thank you!)
Which is not a result of acid precipitation?
A) it can harm fish and other organisms
B) it can pollute soil, killing trees and other plants
C) it can increase the chance of asthma attacks
D) it can damage buildings and statue made of some types of rocks
Answer:
C. It can increase the chance of asthma attacks
Explanation:
If you put something like cardboard between the magnet and the nail, the magnet will still hold the nail in place even if the magnet doesn't touch the nail.
Answer:
Magnetic-field lines pass through cardboard, air, and certain other materials, depending on whether they're permeable or nonpermeable. Test different materials to see which gather magnetic lines of force and act as magnetic shields, and which allow magnetic lines of force to pass through them.
Question 10 of 10
Magnetic striping is evidence of
A. pole reversals
B. Earth's rotation
C. Jupiter's magnetosphere
D. the Van Allen belts
SUBMIT
Answer:
A. pole reversals
Explanation:
It's an evidence of magnetic pole reversal of Earth & sea-floor spreading.
Hope this helps!
Magnetic striping is evidence of seafloor spreading and pole reversals. Hence, option A is correct.
What is sea floor spreading?The notion that oceanic crust develops along submarine mountain zones, commonly known as the mid-ocean relevant standard, and expands out laterally away from them. This concept was crucial in the creation of the doctrine of plate tectonics, which transformed geologic thought in the last quarter of the twentieth century.
Shortly after World War II, sonar-equipped warships crisscrossed the oceans, gathering ocean-depth profiles of the seafloor underneath them. The survey data was used to create bas-relief maps of the ocean floor, and by 1953, American oceanic mapmaker Marie Tharp had created the first of many maps that revealed the presence of an underground mountain range of more than 16,000 km (10,000 miles) long in the Coast Mid-Atlantic Ridge.
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1. If a car sits out in the sun every day for a long time, can light from the sun damage the car's paint?
a
Yes. The paint can take in energy from the light, causing it to be damaged.
b
No. Light can only change things by warming them up. so it cannot damage the car's paint.
С
No. Light is not a physical thing, so it cannot change physical things like paint.
d
Yes. Light from the sun can pull energy out of the paint. causing it to be damaged.
[tex] \huge\boxed{ \tt option \: a}[/tex]
Yes. The paint can take in energy from the light, causing it to be damaged.
the answer is
A , Yes. The paint can take in energy from the light, causing it to be damaged
When light reflects on a mirror, does it undergo a phase change?
or...
Is the surface of a mirror a free boundary or a rigid boundary?
A 0.137 kg mass on a string
is swung in a vertical circle of radius
0.400 m. At the top of the circle, it
moves at 2.33 m/s. What is the
tension in the string at that point?
(Unit = N)
https://brainly.com/question/26500837
Answer:
.516
Explanation:
I typed this into Acellus and it was correct.
On average, how many times a month can we see a full moon?.
Answer:
Once
Explanation:
The time between new moon and the end of the cycle of the moons is about 29.53 days, which is roughly a month
what is the amount of energy associated with a photon that has a frequency of 1000 Hz?
So, the amount of energy associated with a photon that has a frequency of 1000 Hz is [tex] \boxed{\sf{6.626 \times 10^{-31} \: J}} [/tex]
IntroductionHi ! Here, I will help you to explain the material about photon energy. Photon energy is the energy carried by electromagnetic waves as they propagate. Photon energy is generally affected on frequency (the higher the frequency value, the energy will greater too) or wavelengths (the higher value of the wavelengths, the energy will smaller). So, based on the two concepts above, this is the following equation :
By the Frequency
[tex] \boxed{\sf{\bold{E = h \times f}}} [/tex]
By the Wavelengths
[tex] \boxed{\sf{\bold{E = h \times \frac{c}{\lambda}}}} [/tex]
With the following condition :
E = foton energy (J)h = Planck constant ≈ [tex] \sf{6.626 \times 10^{-34} \: J.s} [/tex] c = the constant of the speed of light in a vacuum ≈ [tex] \sf{3 \times 10^{8} \: m/s} [/tex] m/sf = frequency of electromagnetic wave (Hz)[tex] \sf{\lambda} [/tex] = wavelength (m)Problem SolvingWe know that :
h = Planck constant ≈ [tex] \sf{6.626 \times 10^{-34} \: J.s} [/tex] f = frequency of electromagnetic wave = 1,000 Hz = 10³ Hz.What was asked :
E = foton energy = ... JStep by step :
[tex] \sf{E = h \times f} [/tex]
[tex] \sf{E = 6.626 \times 10^{-34} \times 10^3} [/tex]
[tex] \boxed{\sf{E = 6.626 \times 10^{-31} \: J}} [/tex]
ConclusionSo, the amount of energy associated with a photon that has a frequency of 1000 Hz is [tex] \sf{6.626 \times 10^{-31} \: J} [/tex]
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Which colour symbolizes passions and danger?
Answer:
i'm pretty sure it's red.
Sir Isaac Newton first explained the relationship between force and motion. True or false?
Answer:
true
Explanation:
sir isaac newton was the first person to explain the relationship between force and motion
The formula to define the work done a particular force on an object is:
W = Fd cos 0
=
Define each variable in the formula.
w
F
d
cos 0
Answer:
W = work F = force d = distance travelled cos 0 = adjacent/hypotenuse, the cosine of the angle displaced
Explanation:
pls answer this i need it
Answer:
timothy 50
jovanniel 80
PJ 100
Explanation:
tras me
Have you ever felt a shock sliding down a plastic slide (like in a McDonald’s Play Place)? Do you think this is related to electricity? How?
Answer:
Yes because while you slide down the slide you are obviously going to wear clothes and the cotton on your clothes rubbing up against that rubber from the slides, are gonna react by sending a static electricity shock feeling to your body
Explanation:
Answer:
The same effect can be observed on other non-conductive, polymer surfaces like the mesh of a trampoline. If it is sitting in the sun for a while, you can feel the static charge on it when you approach it, even if no one has been on it recently (so it's not just from friction of users' clothing).
Explanation:
There are always stray electrons flying around, everywhere. The plastic of the slides (and other, non-conductive materials) tend to build up spare electrons just from the air currents moving over them, so its not really the sun that makes them collect charge. As the air around the plastic heats up, it loses its density and humidity, meaning that electrons that were sitting on or close to the plastic get stuck there. Air flowing over the plastic deposit more electrons. As the air cools after the sun goes down (or if it gets cloudy enough), the air around the plastic becomes more dense and can hold more humidity, which means that the electrons can be carried away by stray ions faster, and the amount of excess charge decreases.
PLEASE PLEASE HELP ME WITH THIS
PLEASE HELP!
Will Mark Branliest
Calculate the speed of a wave that has no frequency of 3.50 HZ a wavelength of 1.75cm and an Amplitude of 4.25.
Answer:
I'll assume that "no frequency of 3.50 Hz" is supposed to read "a c frequency of 3.50 Hz"
Explanation:
A wave's speed is given by Speed = Distance/Time.
In this case the distance and time are provided: The wavelength is 1.75cm and the time between each wave is (1/3.50) seconds/cycle. That is, the wave travels 1.75 cm every (1/3.50) or 0.2857 seconds. The amplitude has no bearing on this calculation, unless it is 6.5 km high and in your lab.
In that case we'd like to know how much time we have before it reaches us across the 10 m room.
(Distance)/(Time) = 1.75 cm)/(0.2857 sec) = 6.125 cm/second is the speed of the wave.
For a 10 meter room (1000 cm), that would give us (1000cm)/(6.125 cm/sec) = 163 seconds to reach and close the exit door.
PLEASE HELP ME!!!
Which statements describe French control of its colonies? Choose four correct answers.
France established a system of direct rule.
France encouraged Africans to assimilate into French culture.
France granted equal rights to all Africans.
France allowed Africans to benefit from their natural resources.
France encouraged Africans to adopt French traditions.
France weakened the power of black Africans.
The French encouraged the African people to take on the culture of the French.
What are colonies?Colonies refers to areas which the Europeans allocated to themselves after they occupied Africa in the 18th to 19th centuries. They ruled these areas directly until they eventually secured independence.
The following are the statements that describe the French control of its territories;
France encouraged Africans to assimilate into French culture.France weakened the power of black Africans.France encouraged Africans to adopt French traditions.France established a system of direct rule.Learn more about French rule:https://brainly.com/question/3067618?
The mass of the car is 800kg.Force A increases to 5000 N. This causes the car to accelerate initially at 1.5 m/s^2. Calculate the size of force B.
The size of force B is 3800 N.
What is force?This can be defined as the product of the mass and acceleration of a body.
From the diagram attached,
Formula:
Fa-Fb = ma................... Equation 1Where:
Fa = Size of Force AFb = Size of Force Bm = mass of the cara = Acceleration of the carmake Fb the subject of the equation
Fb = Fa-ma................ Equation 2From the question,
Given:
Fa = 5000 Nm = 800 kga = 1.5 m/s²Substitute the given values into equation 2
Fb = 5000-(800×1.5)Fb = 5000-1200Fb = 3800 N.Hence, The size of force B is 3800 N.
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QUESTIONS: 1 In your list, what skill you find more difficult during your execution? Explain your answer 2. Do you believe that during your executions all types of energy systems are working together? Explain your answer 3 What other observations you experienced while performing your listed skats in your sport (Pulse rate increase, Short of breath, muscle pain, etc)?
Locomotor skills are energy intensive and the pulse rate increases, shortness of breath ensues and pain increases in the muscle due to build up of lactic acid.
What are skills in sport?Skills are abilities that are acquire through training and practice such the athlete is able to execute them effectively and efficiently.
Some skills that can be acquired in sports include:
locomotor and non-locomotor skills such as running, leaping and jumping.object control skills such catching and throwing.Learning a skill requires energy input.
Locomotor skills require the highest energy input.
During the learning of intensive skills such as locomotor skills, the pulse rate increases, shortness of breath ensues and pain increases in the muscle due to build up of lactic acid.
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