Answer:
radius of a circle is measured by an instrument, so it is the independent variable
Explanation:
The independent variable corresponds to the magnitude controlled by the experimenter and in general can be measured by an instrument.
The dependent variable is the variable used to perform the calculations, obtained from a mathematical transformation of the independent variable.
The radius of a circle is measured by an instrument, so it is the independent variable and the area is calculated by
A = π r²
Therefore the area corresponds to the dependent variable
How might the temperatures on Mercury be different if it had the same mass as Earth?
Answer:
well, mercury is the closest planet to the sun, making it MUCH hotter than earth. that being said, just because mercury is closest to the sun, it doesnt mean its the hottest planet.
Since Mercury is the planet that is nearest to the sun, it is much hotter than the earth. However, because Mercury is nearest to the sun doesn't automatically make it the hottest planet.
What is a Planet?A huge, spherical celestial object, it is neither a star it nor remnant is called a planet. The nebular concept, which holds how an interplanetary cloud collapse out of a nebula to produce a young white dwarf orbited by a planetary system, is the best theory currently available for explaining planet formation.
The slow buildup of matter propelled by gravity—a practice called as accumulation, to the formation of planets in this disk. The rocky planets Mercury, Venus, Earth, and Mars, as well as the giant planets Jupiter, Saturn, Uranus, and Neptune, make up the Solar System's minimum number of eight planets. Each of these planets revolves around an axis that really is inclined with regard to its orbit pole.
To know more about Planet:
https://brainly.com/question/14581221
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A sound wave passes from air into water and then into steel. With each change in medium, the velocity of this wave will a(increase,then decrease b(decrease c(increase d( decrease,then increase ?
Answer:
a
Explanation:
because it can increase anything
A car traveling with 500,000 J of kinetic energy is brought to a kinetic energy of
100,000 J in 12 seconds. What is the force acting on the car to accomplish this?
A:41,666.67
B:3x10^-5N
C:33,333.33N
D:8,333.33N
Answer:
33,333.33 N
Explanation:
Given that :
Initial kinetic energy = 500,000 J
Final kinetic energy = 100,000 J
Using the relation :
Force * time = change in momentum (Newton's law)
Force (F) * 0.12 = (500,000 - 100,000)
0.12F = 400,000 J
Force = (400,000 J) / 0.12s
Force = 33333.333
Force = 33,333.33 N
Solid solutions containing two or more metal are commonly called alloys. True or false
Answer:
True
Explanation:
An alloy is a combination of metals or metals combined with one or more other elements. For example, combining the metallic elements gold and copper produces red gold, gold and silver becomes white gold, and silver combined with copper produces sterling silver.
Answer:
this is true
Explanation:
yes yes true
Shows a car travelling around a bend in the road. The car is travelling at a constant speed. There is a resultant force acting on the car. This resultant force is called the centripetal force. (i) In which direction, A, B, C or D, does the centripetal force act on the car? Tick ( ) one box. A B C D (1) (ii) State the name of the force that provides the centripetal force.
Answer:
This question is incomplete
Explanation:
This question is incomplete but the missing figure is in the attachment below.
When an object is travelling around a circular path, there is a force that tends to draw that object towards the center of the circular path and keep the object moving in the curved path, that force is called the centripetal force. From this description, it can be deduced that the direction of the centripetal force that acts on the car (in the attachment below) is D.
The name of the force that provides this centripetal force is frictional force. This is the force that prevents the car from slipping off the road; keeping it moving in the curved path.
pls help me w this, I've been doing this since 5 minutes ago
Answer:
t=0.0625s
Explanation:
F=number of swings/time taken
DATA
Frequency=4.0Hz
number of swings from Q to R
=1/4
time taken=?
Frequency=number of swings/time taken
make t the subject of the formula
t=n/f
substitute the given date
t=0.25/4.0
t=0.0625s
option A is collect
13. Austin rode his bike 10 m/s for two minutes. How far did he travel? A. 200 meters B. 1200 meters C. 1000 meters D. 20 meters
Answer:
B. 1200
Explanation:
60 sec in one min in 2 min there will be 120 sec. 10x120=1200
what is 0.94kg divided by 2.4n
Answer:
0.39166666666
Explanation:
A car traveled 885mi from El Paso, TX to Dallas, TX in 12.5 hours. What was the car's average speed?
Answer:
The car's average speed is 70.8 mph
Explanation:
The given parameters are;
The total distance traveled = 885 miles
The time of travel = 12.5 hours
The average speed is given by the following equation;
[tex]Average \ speed = \dfrac{Total \ Distance \ traveled}{Total \ time \ taken \ to \ travel \ the \ distance}[/tex]
Therefore, we have;
[tex]Average \ speed = \dfrac{885 \ miles}{12.5 \ hours} = 70.8 \ miles \ per \ hour[/tex]
Therefore, the car's average speed = 70.8 mph.
Answer:
The car's average speed is 70.8 mph
Explanation:
I need help with science homework
Answer:
4. atmosphere and geosphere
5. atmosphere and hydrosphere
6. hydrosphere and geosphere (? not sure about this one sorry)
7. hydrosphere and geosphere
8. biosphere and geosphere
Most of our Solar system is composed of___
asteroids
moons
planets
empty space
Answer:
empty space
Explanation:
Our solar system comprises of the sun as the star, the planets, the dwarf planets, various moons, and plenty of asteroids, comets, and meteoroids. However, the majority part of the solar system consists of a void or empty space. These empty spaces basically composed of planetary dust and gas.
Hence, it can be concluded that Most of our Solar system is composed of "Empty Spaces."
A body weighing 108N moves with speed of 5m/s in a horizontal
circular of radius 5m.Calculate the magnitude of the:
(i)centripetal acceleration (ii) Centripetal force (iii) centrifugal
force
Answer:
i) 5 [tex]m[/tex]/[tex]s^{2}[/tex] ii) 54 [tex]N[/tex] iii) 54 [tex]N[/tex]
Explanation:
i) [tex]a = \frac{v^{2}}{r}[/tex] ⇒ [tex]a[/tex] = 5² ÷ 5 = 5 [tex]m/s^{2}[/tex]
ii) [tex]m = \frac{W}{g}[/tex] ⇒ [tex]m[/tex] = 108 ÷ 10 = 10.8 [tex]kg[/tex] , [tex]F = ma[/tex] ⇒ [tex]F =[/tex] 10.8 × 5 = 54 [tex]N[/tex]
iii) F1 = F2 = 54 [tex]N[/tex]
Give one example where friction is useful. Can someone feed me with correct answer pls c:
Answer:
Friction is what holds your shoe to the ground. The friction present on the ice is very little, this is the reason why it is hard to walk on the slippery surface of the ice.
Explanation:
Why do you think it is colder during the winter than the summer?
Answer:
As the earth travels around the sun during the year it maintains this tilt. Because of this tilt, in the summer we (north of the equator) are slanted more directly towards the sun so it's hotter. In the winter, we're slanted away so the sun's rays are less direct, making it colder.
The circumference of the Earth is
approximately 40,075 kilometers.
How many significant figures are
there in the numerical value?
Answer:
5 sig figures
Explanation:
LuLu mixes a solution of vinegar for a homemade salad dressing she is making. She makes 300 mL of vinegar by mixing 135 mL acetic vinegar with water. What is the percent by volume of the solute?
Answer:
percentage by volume of the solute = 45%
Explanation:
The percentage by volume of the solute in a solution is the percentage of the volume of the solute as against the overall volume of the solution.
In this example,
volume of solution = 300mL
volume of solute = 135mL
% volume of solute = (volume of solute ÷ volume of solution) × 100
= (135 ÷ 300) × 100
= 0.45 × 100 = 45%
∴ percentage by volume of the solute = 45%
How much would a pair of 0.5 kg shoes weigh on Earth? (Include units in
your answer) *
Answer:
1.1 lbs
Explanation:
To convert kg to lbs you multiply kilograms by 2.2. So 0.5kg × 2.2 equals to 1.1 lbs
hewoooooo pweese help ill do anything
A bus slows from 40 m/s to a stop in 8 seconds. How far does it travel while braking?
Answer:
320 m/s
Explanation:
40 miles per second and 8 seconds makes 40 times 8
Body weight 7,056 kN. What is its mass?
Answer:
Explanation:
The formula for weight goes- Weight=Mass*Gravity
We need to re arrange the formula in order to find the mass
so, mass=w/g
~If the person is on Earth then we can substitue the official the value of gravity as 9.8m/s^2 (this value is fixed)
~ The weight given in this question is 7,056 kN , but we need the weight to be in Newtons for the formula to acc work. So converting 7,056 kN to newtons would give 7056000N. (Newton = Kilonewton * 1000)
Now all we need to do is compute these values-
M= 7056000/9.8
M=720000kg
Well, thats the ans
hello, why do all electromagnetic waves travel at the same speed in vacuum?
Answer:
due to the magnetic field
Explanation:
magnetic field is the same in the vacuum
HELPPP MEE!!
A mover slides a refrigerator weighing 650 N at a constant velocity across the floor a distance of 8.1 m. The force of friction between the refrigerator and the floor is 230
N. Calculate the coefficient of friction between the floor & refrigerator.
Answer: The coefficient of friction is 0.35
Explanation:
We can write the friction force as:
F = N*μ
Where N is the normal force between the refrigerator and the ground, as the full weight of the refrigerator is acting on the ground, the normal force will be exactly equal to the weight of the refrigerator, then:
N = 650N
And μ is the coefficient of friction.
And for this case, the force is 230N, then we have:
F = N*μ
230N = 650N*μ
(230N/650N) = μ = 0.35
Notice that the distance did not matter for this calculation.
A parallel circuit is shown in the diagram above. In this case the current supplied by the battery splits up, and the amount going through each resistor depends on the resistance. If the values of the three resistors are: R1 = 82, R2=82, and R3 = 42, the total resistance is found by: 1/R = 1/8+1/8+ 1/4 = 1/2. This gives R = 22. With a 10 V battery, by V = 1 R the total current in the circuit is: I = V/R = 10/2 = 5 A. The individual currents can also be found using I = V/R. The voltage across each resistor is 10 V, so the resistance across R1 : 2.5A 1.25V 2.5V 1.25A
Answer:
Huh is there options?
Explanation:
XD I dont understand have a good day tho a better person and smarter person will answer this for u
Which of the following is NOT one of the essential components of an exercise program?
Answer:
i dont know dude but ask someone who is in your grade lol
Explanation:
HELP! WILL GIVE BRAINLIST!!!
- What effect do oceans have on the climate?
a. Oceans produce extreme cold.
b. Oceans moderate temperatures and climate.
c. Oceans have little effect climate.
d. Oceans create extreme temperatures.
Answer:
b. Oceans moderate temperatures and climate.
Explanation:
i had this on my quiz and it was right =]
which shows one example of physical change and the one example of a chemical change?
a. dissolving sugar and grinding pepper
b. melting butter and mixing flour with salt
c. boiling water and burning gasoline
d. roasting meat and freezing leftovers
Answer:
D. Freezing water and burning coal
Explanation:
I need help on these 3 questions plz 20 points
Answer: the first one is speed
the second one is acceleration
the last is velocity
Explanation:
i got you
In May 1990 the French TGV train traveled the distance from Paris to Lille, France (127 miles) in 0.819 hours. What was the speed of the TGV in m/s
Answer:
v=69.32 m/s
Explanation:
you have to transfer the distance from mile to meters (from miles to meters multiply by 1609)
so d=204387 m
you have to transfer the time from hour to second (from hour to second multiply by 3600)
so t=2948.4 s
the rule says v=d/t=204387/2948.4= 69.32 m/s
The TGV train has a speed of 69.306 meters per second.
Let suppose that TGV train is travelling at uniform velocity, then we can be calculated its speed by means of the following kinematic equation:
[tex]v = \frac{x}{t}[/tex] (1)
Where:
[tex]v[/tex] - Speed, in meters per second.[tex]x[/tex] - Distance travelled by the train, in meters.[tex]t[/tex] - Time, in seconds.Now we proceed to convert both distance and time in terms of fundamental units:
Distance:
[tex]x = 127\,mi \times 1609\,\frac{m}{mi}[/tex]
[tex]x = 204343\,m[/tex]
Time:
[tex]t = 0.819\,h \times 3600\,\frac{s}{h}[/tex]
[tex]t = 2948.4\,s[/tex]
If we know that [tex]x = 204343\,m[/tex] and [tex]t = 2948.4\,s[/tex], then the speed of the TGV train is:
[tex]v = \frac{204343\,m}{2948.4\,s}[/tex]
[tex]v = 69.306\,\frac{m}{s}[/tex]
The TGV train has a speed of 69.306 meters per second.
We kindly invite you to check this question about kinematics: https://brainly.com/question/24468164
The formula can be used to convert temperatures between degrees Fahrenheit () and degrees Celsius (). How many degrees are in the Celsius equivalent of -22 F
Answer:
-30°C
Explanation:
F-32/180 =C-0/100
or, -22-32/180=C/100
or, -54/180*100=C
or, -0.3*100=C
therefore, C= -30
-22°F = -30°C
PLEASE MARK ME AS BRAINLIEST!
Can someone help me solve number 3 for chemical equations?
Answer:
I'm pretty sure it should be 4KClO3-->3KClO4+1KCl
Explanation:
What type of electric current does a power plant generate for use in your home? OA direct alternating OC. repeating OD straight
Answer:
Direct current
Explanation:
Because it cannot reverse, and it's optimum for usage by electric home appliances.
Unlike Alternating current which reverses, and can cause electric appliances to burn out.