Answer:
0.5m
Explanation:
v=f×lamda
v is 300m/s, f is 600Hz, lamda is ?
lamda=v/f
lamda=300/600
lamda =3/6=1/2m
in of the Solar System
When the ancient Greeks looked at the night sky they noticed that some points of light seem to wander" in the sky
Which term do we use for these wanderers today?
nebulae
moons
stars
1 planets
2 moons
3 stars
4 Planets
Answer:
stars #3
Explanation:
they didn't know it was stars
The price of a television was reduced from
$250 to $200. By what percent was the price
of the television reduced?
Answer:
20%
Explanation:
PLEASE HELP PHYSICS
Wiley coyote pushes a 5kg boulder from an initial height of 10m, the boulder rolls down the hill, across the road, and up the hill on the left. The rock is able to reach a height of 17 m before rolling back down. How fast did Wiley have to push the rock to make this happen?
Answer:
v = 11.7 m / s
Explanation:
For this exercise we can use the conservation of energy
starting point. Where you drop the stone
Em₀ = K + U = ½ m v² + m g h₁
final point. Point where the stone arrives
Em_f = U = mgh₂
We are assuming that there is no friction, so the energy is conserved
Em₀ = Em_f
½ m v² + m g h₁ = m g h₂
v² = 2g (h₂-h₁)
let's calculate
v² = 2 9.8 (17 - 10)
v = √137.2
v = 11.7 m / s
Sam studied kinetic and potential energy by observing apples on a tree during a field investigation. Explain what type of energy these apples have.
Answer:
Gravitational Potential Energy
Explanation:
if it takes you 20 joules of work to move a couch 10 meters in 10 seconds, what is the power?
Answer:
Power = 2 j/s
Explanation:
Power = Work / Time
= 20/10
= 2 j/s
which one is this one How does the author describe the conditions for women at the Blackfeet Reservation in Montana?
Answer: b
Explanation:
Which of these characteristics will produce the most dense water?(Giving Brainlist For Correct Answer!)
-High salinity, high temperature
-High salinity, low temperature
-Low salinity, high temperature
-Low salinity, low temperature
What work is done when we apply a force of 5N and move in the direction of the force 2m?
Answer:
10 J
Explanation:
work = force x distance
work = 5x2
work = 10 J
Joule is the unit for work
HELP MEH I WILL BIVE BRAINLYEST !!
Which aspect of soil characteristics is a soil triangle used for? (10 points)
Group of answer choices
Determining color
Determining types of soils
Separating soils by grain size
Determining soil conservation techniques
Answer:
The correct answer is Separating soils by grain size. Among all the other choices, this is the aspect of soil characteristics in which a soil triangle is used for.
Explanation:
The length of the track itself is 500m. The vehicles (each of mass 15kg) are dragged
along the track back to the top of the ride in stacks of 4. The force required to drag
them at constant speed is 200N
Use an equation from page 2 to calculate the total work done in dragging the stack
back to the start of the ride
Answer:
W = 100000 J = 100 KJ
Explanation:
Here we will use the most basic and general formula of work, which is as follows:
[tex]W = Fd[/tex]
where,
W = Work Done = ?
F = Force Required = 200 N
d = Length of Track = 500 m
Therefore,
[tex]W = (200\ N)(500\ m)\\[/tex]
W = 100000 J = 100 KJ
A 1500 kg car is being lifted by a hydraulic jack attached to a flat plate. Underneath the plate is a pipe with radius of 24 cm at the top and 2cm at the bottom. To generate an upward acceleration for the car of 1.0 m/s2, how much force must be applied to the small end of the pipe? The answer is NOT 102 N btw
Answer:
The force that must be exerted at the other end is 102.08 N/m₂
Explanation:
Using Pascal's formula; P₁ = P₂
P₁ = F₁/A₁ = m*g/(πr²)
m = 1500 kg; g = 9.8 m/s², r = 24 cm = 0.24 m
P₁ = (1500 * 9.8)/(22/7 * 0.24 * 0.24)
P₁ = 81235 N/m²
P₂ = F₂/A₂
A₂ = πr² where π = 22/7; r = 2.00 cm = 0.02m
A₂ = 22/7 * 0.02 * 0.02 = 0.00126 m²
P₂ = F₂ / 0.00126 m₂
substituting in the formula P₁ = P₂
81235 N/m² = F₂ / 0.00126 m²
F₂ = 81235 N/m² * 0.00126 m²
F₂ = 102.08 N/m₂
Explanation:
Answer:Why does water stop flowing out of the top hole even before the water level falls ... Calculate pressure on the bottom of the pool due to the water. 3. ... 2. If the ratio of A2 to A1 was 100, what force would be required to lift a 10000 N car? ... A cylinder with a radius of 11 cm and a height of 3.4 cm has a mass of 10.0 kg. a.
Explanation:
explain the coin in water appears to be raised..
Answer:
defraction
Explanation:
when light passes from a less dense medium(air) into a dense medium(water) the light rays bend towards the normal. This makes the coin look closer
4. Uncle Harry weighs 180 pounds. What is his mass in kilograms?
What part of the atom contains the protons and neutrons?
The atom
The electron cloud
The nucleus
The bottom part
Hoy air always flows up.
true or false?
Answer:
The answer of the question is False
How do we find work from a force-displacement graph when the force exerted
is not constant?
Answer:
Explanation:
Read forces directly from the graph.
Read displacements directly from the graph.
Use the area under the graph to find the work done by the force. This is equal to the kinetic or potential energy the object gains due to the application of the force.
If energy is conserved, then:
O A. initial (PE + KE) = final (PE + KE).
O B. the initial KE must be zero.
O C. the momentum does not change.
O D. PE(before) = KE(before).
If energy is conserved, then initial (PE + KE) = final (PE + KE). So, the correct option is A.
What is meant by Law of Conservation of Energy ?The law of conservation of energy states that, energy can neither be created nor be destroyed, but can be transformed from one form to another.
Here,
According to law of conservation of energy,
The total energy of an isolated system remains constant. That means, the total energy of the system in the initial state will be same as that in the final state.
The total mechanical energy is the sum of kinetic energy and potential energy.
TE = KE + PE
Therefore, the energy to be conserved in the system,
Initial TE = Final TE
So, Initial (KE + PE) = Final (KE + PE)
Hence,
If energy is conserved, then initial (PE + KE) = final (PE + KE).
To learn more about law of conservation of energy, click:
https://brainly.com/question/29775341
#SPJ2
If two alpha particles (each with two protons and two neutrons) are 0.500 m apart, what is the electric potential energy of the system?
Answer:
U = 1.84 10⁻²⁷ J
Explanation:
Electric potential energy is
U = k q₁q₂/ r
in this case the electric charge is
q = 2 p
q = 2 1.6 10⁻¹⁹
q = 3.2 10⁻¹⁹ C
indicate the distance between the charges is 0.500 m
we calculate
U = 9 10⁹ 3.2 10⁻¹⁹ 3.2 10⁻¹⁹ /0.500
U = 1.84 10⁻²⁷ J
How much force is applied if a 130 kg mass is accelerated at 5 m/s^2
Answer:
650N
Explanation:
f = ma
130kg x 5 m/s^2 = 650N
A net force accelerates a 60 kilogram cart at a rate of 0.5 m/s². What is the magnitude of the force?
Answer:
13
Explanation:
34
The ____ of a machine is the factor by which it multiplies the force applied to the machine.
The mechanical advantage of a machine is the factor by which it multiplies the force applied to the machine.
Can someone please help me I don’t understand this
1. How does a lunar eclipse happen?
2. How does a solar eclipse happen?
3. Which one occurs more often?
Answer:
1.lunar eclipse- happen when Earths shadow block the sun light
2.solar eclipse-A solar eclipse occurs when a portion of the Earth is engulfed in a shadow cast by the Moon which fully or partially blocks sunlight
3. lunar and solar eclipses occur with about equal frequency. Lunar eclipses are more widely visible because Earth casts a much larger shadow on the Moon during a lunar eclipse than the Moon casts on Earth during a solar eclipse. As a result, you are more likely to see a lunar eclipse than a solar eclipse.
Explanation:
Physics- Static Equilibrium Please show work :(
A uniform, horizontal 300 N beam, 5.00 m long, is attached to a wall by a pin connection that allows the beam to rotate. Its far end is supported by a cable that makes an angle of 53.0° with the horizontal. If a 600 N person stands 1.50 m from the wall, find the tension in the cable and the force exerted on the beam by the wall
Answer:Given A uniform horizontal beam with a length of 8.00 m and a weight of 200 n is attached to a wall by a pin connection ( allows rotation). Its far end is supported by a cable that makes an angle of 53 degrees with the horizontal. If a 600 n person stands on the beam at 2.00 m from the wall , find the tension in the cable
Now the force acting on the beam are the gravitational force of earth and weight attached to a wall is 200 N which acts at centre. Also force of person standing is 600 N and force exerted is r and tension is T , also torque due to r is zero because it acts at the pivot point. So r = 0
Torque due to tension in the rope is sin 53 x 8.00 x T.
Torque due to force is 2.0 m x 600 N
The weight of beam acts in the centre since the beam is uniform.
So we have
sin 53 x 8.00 x T - 2 m x 600 N - 4 x 200 N = 0
8 .00 x 0.8 x T = 1200 + 800
0.64 T = 2000 N-m
T = 2000 / 0.64
T = 312.5 N
Explanation:
The tension in the cable and the force exerted on the beam by the wall will be 312.5 N and 1200N respectively.
What is force?Force is defined as the push or pull applied to the body. Sometimes it is used to change the shape, size, and direction of the body. Force is defined as the product of mass and acceleration. Its unit is Newton.
The given data in the problem is;
L is the length 5.00 m long,
[tex]\rm \theta[/tex] is the angle of 53.0°
d is the distance = 1.50 m
T is the tension in the cable
F is the force exerted on the beam by the wall= ?
Torque due to tension in the rope is
[tex]\rm \tau = 8.00 \times sin 53^0 \times T[/tex]
Force due to the torque will be;
F= 2.0 m x 600 N
F= 1200 N
The net tension is found as on applying the static equilibirium equation;
sin 53 x 8.00 x T - 2 m x 600 N - 4 x 200 N = 0
8 .00 x 0.8 x T = 1200 + 800
0.64 T = 2000 N-m
T = 2000 / 0.64
T = 312.5 N
Hence the tension in the cable and the force exerted on the beam by the wall will be 312.5 N and 1200N .
To learn more about the force refer to the link;
https://brainly.com/question/26115859
WILL GIVE YOU WHAT EVER YOU WANT JUST HELP ME
Which of the following best compares the structures in protists and fungi that allow these organisms to explore their environment.
Question 2 options:
Protists and fungi move using cilia, flagella, and hyphae.
Some protists move using cilia and flagella. Fungi do not move but have fast growing hyphae.
Protists move using hyphae. Some fungi move using cilia, and flagella.
Neither protists nor fungi have cilia, flagella, and hyphae. They obtain energy only if the food source moves by them.
Ask jamiel3760 about this question...
Spread your smarts while you wait.
ANSWER A QUESTION
New questions in Physics
How come when i try to make an account for brainly it keeps saying We're sorry, but we are not able to complete your registration at this time
Determine el volumen de una caja cuyos lados miden1.25cm,0.92cmy1.124cm. Tome en cuenta las cifras significativas para expresar el resultado.
• If a planet has a radius 20% greater than that of the Earth but has the same mass as the Earth, what is the acceleration due to gravity at its surf…
1.—— can be described as the amount of 'stuff (matter) in an object.
necesito ejemplos de factores que afectan la velocidad de reacción
WILL GIVE YOU WHAT EVER YOU WANT JUST HELP ME Which of the following best compares the structures in protists and fungi that allow these organisms to…
Someone please help me with finding the resistance of these circuits! I've been asking for an hour now. I will give brainliest if right!
72 mol O2 ->molecules 02
Regular table salt is sodium chloride, NaCl. It is a bonding of an Nation and a Cl- ion. Which of these ions is bigger?
Unscramble the words to correctly to state a fact. Respiration usable energy cellular create cells through
Which element is most likely to have an oxidation number of +1? Ο Α. Αr O B. K O C. Be
Write the chemical formula for the following diagrams.
A balloon is filled with helium gas at a pressure of 1.1 × 105 Pa and a temperature of25 °C.The balloon has a volume of 6.5 × 104 cm3.Helium may be as…
How does the euglena differ from the paramecium? Question 20 options: Euglena are photosynthetic. Paramecia use flagella to move. Paramecia have an "e…
What is the peak wavelength of light coming from a star with a temperature of 7,750 K? (Submit your answer in nanometers. Remember 1nm = 10-9 m)
While you are asleep, your body needs to get rid of about 64 J of waste heat every second. The body does this by transferring the heat from the interi…
Which chemical equation obeys the Law of Conservation of Mass? A. 2NO2 → O2 + N2 B. 2NO2 → O2 + 2N2 C. 2NO2 → 2O2 + N2 D. NO2 → O2 + N2
Im stuck i need help
A 0.10 kg mass of copper shot is placed in 0.25 kg of water. The copper is at an initial temperature of 150°C, and the water is at an initial temperat…
why does atomic size increase as you go down a grouping in the table
Answer:
Explanation:
Essential Knowledge
It is essential that the student be able to distinguish between specialized structures that allow protists and fungi to obtain energy and explore their environment.
Protists
Protists are organisms that are classified into the Kingdom Protista. Although there is a lot of variety within the protists, they do share some common characteristics.
● Protists are usually single celled organisms.
● Live in moist environments.
● Vary in the ways they move and obtain energy.
Protists obtain their energy in several ways.
● Animal-like protists ingest or absorb food after capturing or trapping it.
● Plant-like protists produce food through photosynthesis.
● Fungus-like protists obtain their food by external digestion either as decomposers or as parasites.
● Some protists have both autotrophic and heterotrophic characteristi
The one which best compares the structure in protists and fungi that allow these organism to explore their environment is option B. Some protists move using cilia and flagella. Fungi do not move but have fast growing hyphae.
What are moving aids in protists and fungi ?Protists are the eukaryotes that are not considered to be either fungi, animals, or plants. They are mainly tiny and unicellular. Many unicellular protists are motile and can move by employing flagella, cilia, or pseudopods, especially protozoans.
Cells that employ cilia for movement are typically referred to as ciliates, whereas those that use flagella are typically referred to as flagellates.
In marine, brackish, and freshwater reservoirs, hundreds of species of the ciliate genus Paramecium or flagellated Euglena can be found; the green alga Chlamydomonas is found in soil and freshwater all over the world.
Due of their inability to move, fungi produce spores that resemble seeds. These spores spread by the wind, animals, etc., and seek out new environments to flourish.
As the primary means of vegetative growth in the majority of fungi, hyphae are referred to as a mycelium. Therefore, option B is correct.
Find more on fungi:
https://brainly.com/question/1287565
#SPJ7
match the microscopes with their useable
Answer:
there is no question that I can use so sorry
Explanation:
but have a great day :D
A dishwasher has a power of 1 kW. It is used for 2 hours. How much energy will it transfer?
Answer:2kwh
Explanation:
What makes a ship float
Answer:
Ships can float because a ship is less dense than that of the water that it floats on.
Explanation:
Hope this helps!
a body has a speed of 80 kilometre per hour how long it will take to travel 120 kilometre
Answer:
1.5 hour
Explanation:
Time = distance/speed
Time= 120/80 = 1.5 hour
If two bodies have different forces but same acceleration and only one force is known how do I find the other one?
Answer:
Use F = m*a
Explanation:
If you are given the mass of the two different bodies, you could rearrange these equations, plug in the mass of the unknown body to find the unknown force