Answer:
Because the iron oxide chemicals in its soil looks like rust.
Answer:
Hey mate.....
Explanation:
This is ur answer.....
Mars is known as the Red Planet because the iron oxide chemicals in its soil looks like rust. The simple explanation for the Red Planet's color is that its regolith, or surface material, contains lots of iron oxide — the same compound that gives blood and rust their hue.
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A jet plane travels east for
661.8 meters in 6 seconds.
What is the velocity of the plane?
velocity = distance = time
3,970.8
Explanation:
v=661.8×6
3,970.8
HELP ASAP Which statement describes the water particles when condensation takes place?
A. The particles gain heat energy and move closer to each other
B. The particles lose heat energy and move closer to each other
C. The particles gain heat energy and move away from each other
D. The particles lose heat energy and move away from each other
Determine both the mass and the charge of a block of material consisting of 3 x 10^27 protons, 3 x 10^37 neutrons, and 3.1 x 10^27 electrons.
Answer:
The mass of the block of material is 3 x 10³⁷ g/mol
The charge of the material is 4.8 x 10⁸ C
Explanation:
Given;
number of protons of the material, P = 3 x 10²⁷
number of neutrons in the material, N = 3 x 10³⁷
number of electrons in the material, E = 3 x 10²⁷
The mass of the block of material is calculated as follows;
M = P + N
M = 3 x 10²⁷ + 3 x 10³⁷
M = 3 x 10³⁷ g/mol
The charge of the material is calculated as follows;
charge of 1 electron = 1.6 x 10⁻¹⁹ C
charge of 3 x 10²⁷ electrons = 3 x 10²⁷ electrons x 1.6 x 10⁻¹⁹ C
= 4.8 x 10⁸ C
A toy train moves round a circular track of radius 0.50 m.
How many radians has the trained turned through in moving 1.4 m along a track?
Answer:
2.8 radians
Explanation:
[tex]s = r \beta \\ 1.4 = 0.50 \beta \\ \beta = 2.8 \: rad[/tex]
If you go twice as fast, your kinetic energy becomes.
A.2 times smaller
B.4 times smaller
C.2 times bigger
D.4 times bigger
how much does the angle of refraction change from 380nm to 700nm when the incident angle is 80?
Answer:
35 degrees
Explanation:
The incident angle, an 80-degree angle, and as the angle of incidence increases, the amount of refraction also increases. So, we can expect a significant change in the angle of refraction from blue to red light at an 80-degree angle of incidence.
What is refraction?Refraction refers to the bending of light when it passes from different mediums.The amount of refraction that occurs at an interface between two materials depends on the wavelength of light, the angle of incidence, and the properties of the materials. The relationship between these factors is described by Snell's law:
n1 sinθ1 = n2 sinθ2
where n1 and n2 are the refractive indices of the two materials, θ1 is the angle of incidence, and θ2 is the angle of refraction.
For a given angle of incidence, the amount of refraction that occurs is greater for shorter wavelengths (i.e., blue light) than for longer wavelengths (i.e., red light). This effect is known as dispersion, and it is why we see rainbows when sunlight is refracted through water droplets.
In the absence of any information about the properties of the materials involved, we can assume that the amount of refraction will increase as the wavelength decreases.
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How much heat does it take to raise 0.0438 kg of aluminum from room temperature (20.0°C) to its melting point (660°C)?
HELP
Answer:
2.5x10^4 J (scientific notation)
25,000 (Acellus)
Equation:
Q=mcΔT
where:
Q=heat
m = mass
c = specific heat
ΔT=change in temperature
Any rearranging?
Let's see.
No, we need heat.
So no rearranging.
Plug in the numbers and solve
It takes approximately 28,224 joules of heat to raise 0.0438 kg of aluminum from room temperature to its melting point.
To calculate the heat required to raise the temperature of aluminum from room temperature to its melting point, we need to use the specific heat capacity formula: Q = m × c × ΔT
where:
Q = heat (in joules)
m = mass of aluminum (in kilograms)
c = specific heat capacity of aluminum (in joules per kilogram per degree Celsius)
ΔT = change in temperature (in degrees Celsius)
Given:
Mass of aluminum (m) = 0.0438 kg
Specific heat capacity of aluminum (c) = 900 J/kg°C (approximate value for aluminum)
Change in temperature (ΔT) = melting point (660°C) - room temperature (20°C) = 640°C
Now, let's calculate the heat (Q):
Q = 0.0438 kg × 900 J/kg°C × 640°C
Q = 28,224 J (joules)
So, it takes approximately 28,224 joules of heat to raise 0.0438 kg of aluminum from room temperature to its melting point.
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Which of the following organs are found in the
lower gastrointestinal tract? Check all that apply.
answers are above
Answer:
small intestine, tongue and large intestine
Explanation:
The GI tract is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system.
work done in taking charge from one point of a conductor to is another point is called
Answer:
⁸
Explanation:
electric potential
I think so
Define centre of mass.
Answer:
The center of mass is a position defined relative to an object or system of object
6CO2 + 6H20 → C6H12O6 + 602
What type of model is shown?
a
b
computer model
conceptual model
physical model
C
mathematical model
Answer:
C. physical model
Explanation:
Sana nakatulong
Work done depends on
A. Force
B. Displacement
C. Both force and displacement
D. Neither force nor displacement
Answer:
C. Both force and displacement
Explanation:
Hope this helps
Waldo needs to know how much force to apply in order to move a 4000-kg object at 2 m/S2. Which law should he refer to
Answer:
Newton's second law of motion?
Can someone please explain this to me?
Answer:
the anser should be d
Explanation:
Light waves travel at 3 × 10 8 m/s. If the light wave has a particular wavelength of 400 nm (400 × 10 –9 m), calculate its frequency.
Answer:
[tex]f=7.5\times 10^{14}\ Hz[/tex]
Explanation:
Given that,
The wavelength of light, [tex]\lambda=400\ nm=400\times 10^{-9}\ m[/tex]
The speed of light, [tex]c=3\times 10^8\ m/s[/tex]
We need to find the frequency of light. We know that,
[tex]c=f\lambda[/tex]
Where
f is the frequency
So,
[tex]f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8}{400\times 10^{-9}}\\\\f=7.5\times 10^{14}\ Hz[/tex]
So, the frequency of light is [tex]7.5\times 10^{14}\ Hz[/tex].
Expresa en notación científica los siguientes números en notación científica estándar: a) 9367421= b) 7241= c) 0.0005519= d) 0.02=
Answer:
so yeah it is Respuesta
If the car goes exits a freeway and goes from 65
mph to 35 mph is it accelerating?
Answer:
No, the car is decelerating
Explanation:
No the car is decelerating if it exits a freeway and goes from 65
mph to 35 mph since the change in velocity is negative.
change in velocity = final - initial
change in velocity = 35 - 65
change in velocity = -30mph
Since the change in velocity is negative, hence the car is decelerating. Deceleration is a negative acceleration
Calculator
What is the value of x?
Enter your answer in the box.
Х
24
x =
7
2
3
4 5 6 7 8
9
Answer:
25
Explanation:
By Using Pythagoras Theorem,
h^2=p^2+b^2
or, x^2=(24)^2+7^2
or, x^2=576+49
or, x^2=625
or, x=√625
•°• x=25
The value of x in this figure is 25.
What is Pythagorean theorem ?
Pythagorean theorem is applicable to only right angle tringle. it is defined as square of the hypotonias is equal to the square of sum of base and height.
i.e. hypotonias² = base² + height².
In this figure given values are,
Base = 7
Height = 24
hypotonias x = ?
according to Pythagorean theorem,
hypotonias² = base² + height²
hypotonias² = 7² + 24²
hypotonias² = 625
hypotonias = 25
Hence the value of x is 25.
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A student analyzes the data and concludes that one bird flies at a speed of 20 meters per second during a portion of its migration. Select the two types of data that the student needed to form this conclusion
Answer:
The answer is "The location of the bird and time interval between pieces of information".
Explanation:
Please find the complete question in the attached file.
The Radar is the instrument used to gather data from birds by researchers. This would be the primary tool to study the flight behavior of migrating birds with the impact of environmental influences including the ecology of migratory movements, from the broad population group for both the distribution of land areas and geomorphology as well as meteorological systems to the shift in the behavior of airlines of particular birds, especially when responding to lead routes.
A spring has an unstretched length of
12.0 cm. Its stiffness k is 8 N/cm. What load is
needed to stretch the spring to a length of 15.0 cm?
Answer:
24 N
Explanation:
Given,
Unstretched length or original length , x1 = 12cm
Stiffness constant, k = 8 N/cm
Load required to take spring to a length , x2 of 15cm
Recall the relation :
F = Ke
Where, e = extension
e = x2 - x1
e = (15 - 12) = 3
F = ke
F = 8 N/cm * 3cm
F = 24 N/cm*cm
F = 24 N
Hence, required load = 24 N
A spherical conducting shell has charge -5 C. A particle with charge -8 C is placed at the center of the cavity. The charges (in C) on the inner surface and on the outer surface of the shell, respectively, are:
Answer:
Explanation:
The charge of - 5C will be spread on the outer surface of the shell . The presence of - 8C charge at the Centre will create + 8C charge on the inner surface and - 8C charge on the outer surface . The result is that the total charge on the outer surface of the shell will be - 5C + - 8C = - 13C and the inner surface will have charge of + 8C . + 8C charge will be locked to centrally situated - 8C charge and will not be neutralized by negative charge of outer surface .
2. A hanging wind-chime on a calm day would have kinetic or potential energy?
kinetic
potential
Answer:
it would have potential energy
A graph with resistance in ohms on the x-axis from 0 to 200 and current in amps on the y-axis from 0 to 5. The graph is labeled as current as a function of resistance at 50 V. Points are plotted at (10, 5), (20, 2.5), (100, .5) and (200, .25). There is an inverse curve through the points. Use the graph to answer the questions. Based on the graph, what happens to current as resistance increases? This type of graph shows which type of relationship between the two variables? What would be a reasonable estimate for current at a resistance of 50 Ω?
Answer:
1. decreases
2. inverse proportionality
3. 1 A
Explanation
Just did it
Answer:
1. decreases
2. inverse proportionality
3. 1 A
Explanation
Just did it
An eighth-grade class is studying the motion of objects. They have learned the following concepts about motion.
Motion occurs when there is a change in the position of an object with respect to a reference point.
While the speed of the object may change at various times during a trip the average speed for the trip is found by dividing the total distance by the total time.
The motion of the object can be changed by varying the amount of net force acting on the object or by varying the mass of the object.
The teacher asked students to design investigations to determine how changing the forces acting on an object or the mass of the object would change its motion.
The materials for the investigation included:
1 - toy cart
3 - 10N weights
1 - pulley
2 - meters of string
One group of students decided to design an investigation to determine how different amounts of mass on the toy cart would affect the speed of the toy cart. They set up their investigation as shown below:
The students performed several trials using different masses in the toy cart (M1). They hung a mass shown as (M2) to pull the toy cart as it dropped.
Below is a table they made to record their results.
Which of the following would be a way to test the effect changing the amount of force acting on the object has on the average speed of the object?
Move the cart at various speeds and determine the force at M1
Add varying numbers of weights to M1 and measure the speed of the car.
Add varying numbers of weights to M2 and measure the speed of the cart.
Move the cart at various speeds and determine the force exerted by M2
Add varying numbers of weights to M1 and measure the speed of the car.
Add varying numbers of weights to M2 and measure the speed of the cart.
How to test the effect of weight on the speed of object?In order to test the changing amount of force that is acting on the object has effect on the average speed of the object we have to change the amount of weight on the object and allows it to move to a certain point in this way we can check the effect of changing amount of weight on the speed of the object.
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PLA help if you understand
Answer:
b - it is not based on experimental data collected by scientists
Need help pls. It is for acellus
Answer:
The height of the water column = 1.62405[tex]\overline{30}[/tex] × 10⁻¹ m
Explanation:
The air cavity in the Coke bottle = 0.220 m deep
The fundamental (frequency) it plays when water is added to shorten the column and it is blown across the top, f = 528 Hz
The given speed of sound in air, v = 343 m/s
We note that the air cavity in the coke bottle is equivalent to a tube closed at one end
The fundamental frequency for a tube closed at one end, 'f', is given as follows;
f = v/(4·L) = v/λ
Where;
L = The height of the water column
λ = The wavelength of the wave
∴ 4·L = v/f = (343 m/s)/(528 Hz) = 0.6496[tex]\overline{21}[/tex] m
∴ L = 0.6496[tex]\overline{21}[/tex] m/4 = 0.162405[tex]\overline{30}[/tex] m
The height of the water column = 1.62405[tex]\overline{30}[/tex] × 10⁻¹ m.
Answer:
0.058
Explanation:
got it right on acellus
Find the electric field a distance z above the midpoint between equal and opposite charges,a distance d apart
Answer:
Ex = [tex]2 k q \frac{x}{(x^2 + z^2) ^{3/2}}[/tex] , E_z =0
Explanation:
To find the electric field of each charge, let's use
E = k q / r²
where the field for a positive charge is outgoing and for a negative charge it is incoming.
Since the electric field is a vector magnitude, let's add its components at the point z
X axis
Eₓ = E₁ₓ + E₂ₓ
Eₓ = 2 E₁ₓ
Z axis
E_z = E_{1z} -E_{2z}
E_z= 0
Let's find the expression for the electric field
the distance from the charge to the test point, using the Pythagorean theorem is
r² = (x-0) ² + (0-z) ²
E = [tex]k \frac{q}{x^2 + z^2}[/tex]
with trigonometry we can find its components
cos θ = E₁ₓ / E
E₁ₓ = E cos θ
we substitute
Eₓ = 2 E cos θ
where the cosine
cos θ = x / r
Ex = [tex]2 k \frac{q}{x^2 + z^2} \ \frac{x}{\sqrt{x^2 + z^2} }[/tex]
Ex = [tex]2 k q \frac{x}{(x^2 + z^2) ^{3/2}}[/tex]
E_z = 0
michael's house is 5.0 km away from his school. How long would it take him to go ti school, riding a bus, if its velocity is 25 km/h?
Pleaseee answer correctly
I mark brainliest who answer this
Answer:
12 mins
Explanation:
The distance covered is 5 km, divide this by 25 to get the fraction of an hour it takes. Doing this you get .2, times this by 60 min (1 hour) to get how many mins it takes
How much acceleration does a car need if it is to go a distance of 620 ft. In a time of 20 sec while it is speeding up
PLZZZZ HELPPPPPP MEEEEEE!!!!!! ASAP!!! ILL GIVE 20 POINTS AND BRAINLIEST!!!
:'(
I am soooooooooooo desperate.
Answer:
the answers the correct one is C
Explanation:
In radioactive decay processes, a very important concept is the half-life time, which is the time it takes for the parent nuclei to decompose into child nuclei.
expressed this mathematically is
N = N₀ [tex]e^{- \lambda t}[/tex]
for the average life time
N₀ / 2 = N₀ [tex]e^{- \lambda T_{1/2}[/tex]
T =[tex]\frac{ln 2x}{ \lambda}[/tex]
Analyzing this expression, the nuclei that decay are the so-called parents and the new nuclei called children appear.
when checking the answers the correct one is C