Answer:
Option C : Black
How much work is done on a small car if a 3150 N force is exerted to move it 75.5 m to the side of the road
Answer:
Explanation:
Work = Force times displacement. Therefore,
W = 3150(75.5) so
W = 238000 N*m
A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed?
Answer:
v=500 m/s
Solution:v=(10m)(50/s)
what characteristic describes what happens during a physical change
You've probably seen how the surface of a tire can partially melt and leave a mark on the road when a car's brakes are applied really hard. Explain why the surface of the tire melts.
Answer:
tire marks are due to the increase in thermal energy
Explanation:
When a tire is spinning at a given speed when the brakes are applied hard, the friction between the tire's particulate and the ground surface is high enough that some tire particles are transferred to the ground.
This is reflected in the heat transfer from the tire to the ground.
Consequently, tire marks are due to the increase in thermal energy and the change in the friction force of the tire.
Answer:
Going super fast and stopping abruptly causes friction which causes heat thus it melts the surface of the tire.
Explanation:
This is example answer for edmentum :)
Label the layers of the Earth in order from youngest to oldest according to the law of superposition.
Answer:
With the increase in depth, age of layer increases.
Explanation:
According to the law of superposition, the layer of the Earth that is present in the deep is considered as the oldest layer while on the other hand, those layer which is present on the top of all layers is considered as youngest layer of earth. When we move from the top layer towards the bottom layer, the age of layer increases or in other words, when we move upward the age of the layer decreases so label the layers of earth on the basis of this phenomenon.
a man ran the 200m race within 19.19 seconds. Calculate the speed of the man during the race
Answer:
around 23 miles per hour
hi please answer and show your work
Answer:
[tex]\huge\boxed{\sf P.E. = 240\ MJ}[/tex]
[tex]\huge\boxed{\sf K.E. = 19.6\ MJ}[/tex]
Explanation:
Given:
Mass = m = 200,000 kg
Vertical Distance = h = 120 m
Speed = v = 14 m/s
Acceleration due to gravity = g = 10 m/s²
Required:
1) Gravitational Potential Energy = P.E = ?
2) Kinetic Energy = K.E. = ?
Formula:
1) P.E. = mgh
2) K.E. = [tex]\displaystyle \frac{1}{2} mv^2[/tex]
Solution:
1) P.E. = (200,000)(10)(120)
P.E. = 240,000,000 Joules
P.E. = 240 Mega Joules
P.E. = 240 MJ
2) K.E. = 1/2 (200000)(14)^2
K.E. = (100000)(196)
K.E. = 19,600,000 Joules
K.E. = 19.6 MJ
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Based on the model, which three factors might cause this change in the apparent movements of the stars? A. Earth's rotation on its axis B. Earth's revolution around the Sun C. The tilt of Earth's axis D. Earth's changing distance from the Sun
Answer:
I think it's A C and D sry if I'm wrong UwU
The amount of sea ice and permafrost have steadily decreased near Shishmaref, Alaska, over the last century. The loss of ice has allowed ocean waves to erode the land and destroy property. What might be causing this melting?
Answer:
Climate change, where there is an increase in the average temperature, due to continuous human activities. These activities increase greenhouse gases in the atmosphere.
Explanation:
Alaska is the largest state in the United States, and it has a cold climate. The climate changed over time as human activities such as coal mining contributed to greenhouse gas emissions leading to global warming. Over the years. the variations in weather leading to climate change melt the permafrost (frozen ground below the soil surface) causing ocean waves to erode the land and destroy property.
PLS PLS HELP FOR BRAINLIEST!!!!!!!!!!!!
Option A: The air molecule moves from the girl's mouth to the ear of her friend
please help me today's the last day to turn it in any help would be greatly appreciated
Answer:
Aren't the arrows suppose to pointed towards each other? like gravity sorta attract things together. other than that might be the distance relative to the equation
Explanation:
Can somebody answer this science question NO LINKS !!!!
Answer:
position 1
Explanation:
in position 2 and three it would have less energy cause there is less force being exerted to give it that push, but at the end position and the first position there is going to be more force and energy behind the ball.
What kind of energy is used in baking?
A. Light
B. Sound
C. Heat
D. Mechanical
Answer:
C
Explanation:
Thermal energy is used to cook food. Thermal energy is heat. It's converted from either electrical potential energy or chemical potential energy, depending on the cooking appliance.
sorry if I'm wrong
How many atoms are in 2Mg3(PO4)2?
Answer:
13 atoms
Explanation:
Look at the subscripts.
“Mg₃” means that there are 3 magnesium atoms; “PO₄” means that there is 1 phosphorus atom and 4 oxygen atoms. But note that the PO₄ group has a subscript too: 2. This multiplies the atom count by 2, so you have 2 phosphorus atoms and 8 oxygen atoms.
3 + 2 + 8 = 13
(hope this helps can i plz have brainlist :D hehe)
There are total 26 atoms in 2Mg₃(PO₄)₂ compound. in one Mg₃(PO₄)₂, there are 13 atoms. Therefore, in 2 Mg₃(PO₄)₂ units, there are 26 atoms in total.
What is chemical formula ?A chemical formula is used identify a compound and to indicate chemical composition. The molecular formula of a compound is written based on the chemical symbol of each constituent atoms and their numbers.
The number of the atoms of each elements are represented as subscripts for each elemental symbol. In the given compound Mg₃(PO₄)₂, one unit of the compound contain 3 Mg atoms, and 2 PO₄ units means 2 P and 8 oxygen atoms. Hence there are 13 atoms in one unit.
There are 2 such units of this compound. Therefore, the total number of atoms present in 2 units Mg₃(PO₄)₂ compound is 13×2 =26.
Find more on chemical formulas:
https://brainly.com/question/29031056
#SPJ2
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David runs 100 m in a time of 9.80 s. Calculate his average speed. State the unit.
Answer:
His average speed is 980 units
Two planes approach each other head on. Each has a speed of 721km/h and they spot each other when they are initially 14.7km apart. How many seconds (s) do the pilots have to take evasive action?
Answer:
The time the pilots have to take evasive action is approximately 36.699 seconds
Explanation:
The direction of the planes = Towards each other
The speed of each plane, v₁, v₂ = 721 km/h
The initial distance between the two planes, d = 14.7 km
The relative velocity of the two planes, v = v₁ + v₂
v = 721 km/h + 721 km/h = 1,442 km/h
The time it will take the planes to meet, t = d/v
∴ t = 14.7 km/(1,442 km/h) = (21/2,060) h × 60 min/hr × 60 s/min ≈ 36.699 s
The time it will take the planes to meet = The time the pilots have to take evasive action, t ≈ 36.699 seconds.
Check out the list of scientific names. These names all represent animals. These are all annals but they cannot reproduce fertile offspring with each other. What conclusion can be drawn from the past statement?
Answer:
None of the animals are from the same species
Explanation:
The exact question is as follows :
Given -
Felis catus
Sylvilagus audubonii
Parus inornatus
Euarctos americanus
Check out the list of scientific names. These names all represent animals. These are all animals but they cannot reproduce to produce fertile offspring with each other.
To find - What conclusion can be drawn from the past statement?
Solution -
The conclusion we can made from past statement is that - None of the animals are from the same species
Reason -
When two members of the same species reproduce, they produce fertile offspring.
According to the scientific names of the animals, there are different genus and species names.
what are the advantages of having a roof with a lower thermal conductivity
Answer:
A thick layer of material with a low thermal conductivity reduces the rate of heat transfer from the ceiling into the roof space.
Question 10 (1 point)
Identify the list below that contains items that diverge light rays.
Question 10 options:
Convex lens and concave mirror
Convex lens and concave lens
Convex mirror and concave lens
Convex mirror and concave mirror
Explanation:
convex mirror and concave lens
a wave has a frequency of 10Hz and a wavelength of 30 m. What's its velocity?
An unknown material has a mass of 3.5 g and a volume of
5.5 cm3 What is the density of the material? Round to the nearest tenth.
Explanation:
Density=mass/volume
density= 3.5 g ÷ 5.5cm
density=0.63
Item 3 A manufacturer makes lightbulbs and claims that their reliability is 98 percent. Reliability is defined to be the proportion of nondefective items that are produced over the long term. If the company's claim is correct, what is the expected number of nondefective lightbulbs in a random sample of 1,000 bulbs?
Answer:
980 is the expected number of nondefective lightbulbs in a random sampling of 1,000 bulbs
Explanation:
If the company claims is right, this is the task that should be done
Lightbulbs = 1,000 * 0.98 = 980
Therefore, 980 working bulbs is expected out of a sample of 1,000 lightbulbs
¿Con que fuerza se atraen dos masas de 50kg y 700 kg que están separadas por una distancia de 5 cm?
Answer:
F = 9.338 10⁻⁴ N
Explanation:
For this exercise let's use the law of universal gravitation
F = [tex]G \frac{m_1m_2}{r^2}[/tex]
let's reduce the magnitudes to the SI system
r = 5 cm (1 m / 100cm) = 0.05 m
let's calculate
F = 6.67 10⁻¹¹ 50 700 / 0.05²
F = 9.338 10⁻⁴ N
the direction of the force is in the direction between the particles
1. Nombrar mediante ITEMS las características que tiene el musculo de pescado y como se diferencian del musculo animal terrestre.
Answer:
Similitudes y diferencias entre los músculos de los peces y los de los animales terrestres.
Explicación:
Los músculos de los peces se diferencian del músculo de los animales terrestres porque los peces tienen músculos rojos, rosados y blancos. También tienen tejido muscular de pescado que se compone de músculo estriado al igual que el músculo de los animales terrestres. La mayor parte del tejido muscular de los peces es de color blanco, pero muchos peces también tienen una cierta cantidad de tejido oscuro de color marrón o rojizo. El músculo oscuro se encuentra justo debajo de la piel a lo largo del costado del cuerpo.
A wire connected to red and green terminals on a grey box, which contains a white box with a needle pointing up. The wire passes through a 3 sided trough and is there labeled with a downward pointing arrow and the words Direction of movement of wire. You are trying to induce a current and have put together the setup shown. What needs to be added in order for current to flow in the wire?
100 points, help asap
Answer:
A Magnet
Explanation:
Edge 2021
Answer:
The answer is the last option, A Magnet
Explanation:
How would mass determine if an egg will crack or not and why?
Describe how the behavior of electric charges is similar to that of magnetic poles.
Answer:
Concepts Covered
Electric and magnetic forces are non-contact forces, which means objects exerting these forces on each other don’t need to be touching. The two types of forces are related; a moving magnet can make electrical charges move, cause an electric current, and in turn cause magnetism.
An electric force is a force of attraction or repulsion between charged particles, which have unequal numbers of protons and electrons. More protons means there is a positive charge, and more electrons means there is a negative charge.
The electrons within a solid object can move, and if they are concentrated on one side of the object, it becomes polarized. Interactions with other objects can move electrons and cause this polarization, such as rubbing a balloon against your hair.
Objects that have the same charge, both positive or both negative, repel each other, and those with opposite charges attract each other. The magnitude of a charge is how imbalanced its protons and electrons are. The higher the magnitude and the closer together two objects are, the stronger the electric force between them.
A magnetic force is a force of attraction between magnetized materials. Magnetized objects always have both a north and a south pole, never just one or the other.
Similar to electric charges, opposite poles attract, and like poles repel. The stronger the magnets and the closer together they are, the stronger the magnetic force between them.
Magnitud del momento de una fuerza respecto a un punto cuando la línea de acción de la fuerza pasa por dicho punto.
Answer:
τ = 0
Explanation:
The moment of a force is defined by
τ = F x r
where bold indicates vectors.
We can write this equation in module form
τ = F r sin θ
the amount without ea r is called the breaststroke and is the distance perpendicular to the pivot point.
The line of action of the force passes through the turning point whereby
r = 0,
Consequently the moment is also zero
τ = 0
Humans sleep in cycles, usually two or three cycles per night. There is a point in each cycle when waking up will leave the sleeper feeling the most rested and refreshed.
After learning about this, a computer programmer designed a new smartphone alarm clock. This new alarm clock uses sensors in the smartphone to detect the sleeper’s motion and determine when the sleeper has reached the best point in the sleep cycle at which to wake up. The app can be downloaded onto any smartphone. Most users who download this app find that it does not help them wake up feeling more refreshed, but they are willing to try improved products in the future.
Which criterion did this sleep cycle alarm clock fail to meet?
It did not solve the problem.
It was not cost effective enough.
It was not readily available.
It was not safe for most users.
Answer:
A
Explanation:
It did not solve the problem.
A backpacker walks for 3 days in the mountains and covers 16 km. How fast was he walking in km/hr?
Answer:
0.22 km/h
Explanation:
72 hours in 3 days
16/72 = 0.222222222
round to 0.22 km/h
For future reference, Distance/Time= Speed