'You perform an experiment to determine how the type of lightbulbs used in your
house (incandescent, LED, fluorescent) affects your electric bill.
What is the dependent variable?
A.) The type of lightbulb used
B.) Your electric bill
C.) The size of your house
D.) The number of bulbs in your house

Answers

Answer 1
I think the answer is B, your electric bill
Answer 2
B electric bill is correct

Related Questions

Which is the cause of the suns magnetic properties ?
A) upward movement or super heated gases in the convection zone
B) uneven churning of plasma
C) rapid spinning of metals in the core
D) uniform clockwise rotation of charger particles

Answers

Answer:

Q:

What characteristic is shared by sunspots, solar flares, and coronal mass ejections? Select the two correct responses.

A:

They tend to occur during active periods of the solar cycle. & They are caused by outward fluctuations of the sun's magnetic field.

Q:Drag each item to the correct location.

A: sunspot: cooler area on suns surface where the magnettic field emerges

solar flare: intense burst of radiation coming from the rapid release of magnetic energy

coronal mass ejection: large bubble of plasma from the rapid release of magnetic energy

Q: Which is the cause of the sun's magnetic properties?

A: uneven churning of plasma

Explanation:

took quick check

good luck yall

The uneven churning of plasma is the cause of the sun's magnetic properties, therefore the correct answer is option B.

What is a magnetic field?

A magnetic field could be understood as an area around a magnet, magnetic material, or an electric charge in which magnetic force is exerted.

For a simple bar magnet, N-pole and S-pole are the points on a magnet that have the strongest magnetic field. The magnetic field originates from the north pole and terminates in the south pole of a magnet.

The positively charged ions and negatively charged electrons that make up the plasma of the Sun move around a lot due to its high temperatures. Multiple intricate magnetic fields that twist and turn are produced by the moving plasma. A magnetic field is produced by the extremely hot plasma that escapes from the Sun as the solar wind.

Thus, The sun's magnetic properties are caused by uneven plasma churning, so option B is the correct answer.

Learn more about the magnetic fields from here

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The P.E stored by a mass spring system at an extension of 2 cm is 10 J. The P.E stored by the same system at an
extension of 4 cm will be:

Answers

Explanation:

extension(x) = 0.02m When the P.E is 10J.

extension(x)= 0.04m PE?.

P.E is proportional to Extension²

P.E/x² = P.E"/x"²

10/(0.02)² = P.E/(0.04)²

P.E= 10x(0.04)²/(0.02)²

P.E= 40J

How far would a snowmobile travel in 0.5 hours at a rate of 25 km/h?

Answers

Answer:12.5 km

Explanation:

0.5=1/2

25 x 1/2 = 12.5 (25 ÷ 2 = 12.5)

Answer:

12.5 km

Explanation:

Distance = Speed x Time

               = 25 x 0.5

               = 12.5 km

Which statement describes the motion of a ball as it drops onto a vertical spring?
a. The acceleration of the ball decreases as the spring shrinks.
b. The accIleration of the ball decreases as the spring extends.
c. The velocity of the ball changes from positive to negative as the spring shrinks.
d. The velocity of the ball changes from negative to positive as the spring extends.

Answers

Answer:

F = M a    Newton's second law

F = - K x     force exerted by compressed spring

a = - K x / M

a) is true because the ball originally is accelerated due to gravity and this acceleration will decrease as the spring in compressed

One could argue for (d) if the downward direction was designated as negative

Prior to maximum compression of the spring the velocity would negative and as the spring began to extend (and the ball began move upward) the velocity of the ball would change from negative to positive

5.
1
Shown above is a wire that is carrying current in a magnetic field. The magnetic field
is coming out the plane of the page.
What is the direction of deflection of the wire?
A) Upwards
B) Downwards
C) To the left
D) To the right

Answers

Answer:

The direction of defliection of the site to the left I think ..

Defects of vision and their correction drawing ​

No Spams ❌❌

Answers

Answer:

Vision Correction

You probably know people who need eyeglasses or contact lenses to see clearly. Maybe you need them yourself. Lenses are used to correct vision problems. Two of the most common vision problems are myopia and hyperopia.

Explanation:

hope this helps

Give a reasonable order-of-magnitude estimate of the number of golf balls that would fill a home
swimming pool

Answers

An order of magnitude is a number of the form 10^n such that can be used to compare magnitudes or quantities.

We will find that  the order of magnitude of golf balls that fill a home swimming pool is 10^6

In this case, we want to estimate the number of golf balls that would fill a home swimming pool.

We know that the diameter of a golf ball is D = 42.6mm = 0.0426m

And the volume of a sphere of diameter D is:

V = (4/3)*pi*(D/2)^3

where pi = 3.14

Then the volume of a single golf ball is:

V =  (4/3)*3.14*( 0.0426m/2)^3 = 0.00004 m^3

Now we need to find the average volume of a home swimming pool, we can use 48 m^3 (an average one) to do the general math.

To find the number of golf balls that enter in that volume, we need to do the quotient between the volume of the pool and the volume of a single ball:

N = (48 m^3)/(0.00004 m^3)  = 1,200,000

If we round this to the next order of magnitude: 10^6 (the exponent is the number of digits at the right of the one)

Then the order of magnitude of golf balls that enter in a home swimming pool is  10^6

If you want to learn more, you can read:

https://brainly.com/question/4953281

Please answer these, I’m willing to give plenty of points.

Does a person with a family history of a breast cancer have a higher chance of developing breast cancer during her life?
IV:_________
DV:__________
Hypothesis:__________

Does grass grow faster under shade of a tree or in direct sunlight?
IV:_______
DV:_______
Hypothesis:_________


Observation: students do not eat very much of their food in the lunchroom.
Question: will students eat more food in lunch room if more fresh fruit and vegetables are used?
IV:_________
DV:__________
Hypothesis:_______

Observation: my dog won’t stop barking whenever someone rings the doorbell.
Question: will my dog bark less when the doorbell rings if he exercises for an hour everyday?
IV:_____
DV:_______
Hypothesis:________

Create your own question.
Observation:___________
Question:_____________
IV:________
DV:_________
Hypothesis:____________
Please send help before school starts!!!!!

Answers

Answer:

IV family history of breast cancer or not.

DV chance of developing breast cancer. Hypothesis Someone with a family history of breast cancer will have a higher chance of developing it.

IV: Where the grass is placed: tree shade or direct sunlight.

Dv:The grasses growth rate

Hypothesis: Grass will grow faster in direct sunlight as opposed to tree shade

IV: Fresh veggies and fruit or not

Dv: how much the students eat: will they eat more or less?

Hypothesis The students will eat more in the lunchroom when Fresh veggies and fruits are served.

IV: The dog exercise everyday for 1 hour or not.

DV: The dogs barking: less or more.

Hypothesis: The dog will bark less when someone rings the doorbell if he exercises for 1 hour every day.

Explanation:

Observation When I wish my face before bed, I get less breakouts in the morning.

Question Does nightly face washing prevent morning breakouts?

IV Washing face at night or not

Dv How much breakouts in the morning.

Hypothesis Washing your face nightly decreases the occurrence of morning breakouts.

2. A force of 20N acts on a particle of mass 2 Kg and displaces it by 5m at an angle 30°. What is the work done? a) 40J ) b) 50 J c) 100J​

Answers

Mass is not required

Force=F=20NAngle=30°Displacement=s=5m

[tex]\\ \rm\longmapsto W=Fscos\Theta[/tex]

[tex]\\ \rm\longmapsto W=20(5)cos30[/tex]

[tex]\\ \rm\longmapsto W=100\times \dfrac{\sqrt{3}}{2}[/tex]

[tex]\\ \rm\longmapsto W=50\sqrt{3}J[/tex]

Answer:

[tex]we \: have \\ w = fs \cos( \alpha ) \\ f = 20n \\ m = 2kg \\ s = 5m \\ \alpha = 30 \\ \\ then \: w = 20 \times 5 \times \cos(30) \\ 100 \cos(30) \\ = 100 \frac{ \sqrt{3} }{2} \\ = 50 \sqrt{3} \\ = 86.6 \: joule\\ thank \: yo[/tex]

a car advertisement States that a certain car can accelerate from rest to70km/h in 7seconds find the car's average acceleration​

Answers

Answer:

Acceleration is 2.78 m/s²

Explanation:

Since the car is from rest, initial velocity, u is zero.

from first newton's equation of motion:

[tex]{ \bf{v = u + at}} \\ [/tex]

v is final velocity

u is initial velocity

a is acceleration

t is time

70 km/h is (70 × 1000 ÷ 3600) m/s = 19.44 m/s

[tex]{ \sf{19.44 = 0 + (a \times 7)}} \\ { \sf{7a = 19.44 }} \\ { \sf{a = 2.78 \: {ms}^{ - 2} }}[/tex]

A playground merry-go-round spins about its axis with negligible friction. A child moves from the center of the merry-go-round to the rim. For this system, indicate which of the following quantities change.
A. Potential energy
B. Angular momentum
C. Mass
D. Moment of inertia
E. Angular speed
F. Rotational kinetic energy

Answers

Answer:

B

Explanation:

In this process on merry go round there is not any external torque so angular momentum will be conserve. Mass is always conserved.

which of the following are fundamental unit ?
I.candela
II.ampere
III.mole
IV.all of these​

Answers

Answer:

all of these very easy questions

pls give me an answer

Answers

Answer:

IV what is it's potential energy at the maximum height

A bicyclist is traveling at +25m/s when he begins to decelerate at -4m/s2. How fast is he traveling after 5 seconds

Answers

Answer:

+5m/s

Explanation:

When doing the math we figure out that e is going to be slowing down at -4m/s² for 5 seconds. In total he is slowing down -20m/s which we take from the total speed of +25m/s to get his current new speed.

A snail at position 3 cm moves to position 20 cm in 8 seconds
What is it's velocity ?
What is it's displacement ?​

Answers

Answer:

no worries

Explanation:

Leave it to me.

Answer:

17 cm

Because the equation you're using is ∆d=df

what is the name of the chart that contain elements?​

Answers

Answer:

Element Chart

Explanation:

It is a chart that provides many different elements.

The elevators in the John Hancock building in Chicago move 783 ft in 33 s. What is this speed in miles per hour?

Answers

Answer:

16.18 mph

Explanation:

the speed of elevators =

(783×3600)/(33×5280) =

2,818,800/174,240 = 16.18 mph

Record the length of the line shown in centimeters.
7.30
7.12
7.3
7.28
Please help will be marked most brainlist !!

Answers

Zooming I. On the image the red line is just short of the 3rd line past the 7 so it is not 7.3 but just a little under.

Answer: 7.28

According to the graph the acceleration of the object is ?

A) Constant
B) decreasing
C) increasing
D) zero

Answers

Answer:

your answer is (B) decreasing

I hope it's helps you

what is the density of a 75 g block of wood measuring 12 cm x 8cm x 9cm

Answers

Answer:

density is equal to mass divided by volume (m/v)

volume: 12×8×9=864cm³

75÷864=0.09

Answer: 0.09g/cm³

Why is running or jogging good aerobic excercise? Explain

Answers

Answer:

Running is faster, uses more kilojoules and demands more effort from the heart, lungs and muscles than jogging. Running requires a higher level of overall fitness than jogging. Both running and jogging are forms of aerobic exercise.

Explanation:

estimate my age in seconds 14 years old

Answers

Oooooooooooooooooooooooooooooooooooooof

A car moves with an average speed of 45 mph. How long does a car take to travel 90 miles?

Answers

Answer:

It took 2 hours

Explanation:

[tex]{ \bf{time = \frac{distance}{speed} }} \\ [/tex]

distance is 90 miles

speed is 45 miles per hour

[tex]t = \frac{90}{45} \\ \\ t = 2 \: h[/tex]

Answer:

2 hours

Explanation:

45 times 2 is 90

Any two waves that meet as they travel through the same medium will interact. If the two waves are in phase their crests will coincide and they will experience _____ interference, producing a wave with a(n) _____ amplitude.

Answers

Answer:

constructive

alpitude

the density of the metal is 8.9g/cm³.what does it mean. What is the importance of the value​

Answers

Density of the metal is 8.9g/cm^3

It means per 1cm^3 Volume there is 8.9g of Mass occupied .

Density:-

[tex]\boxed{\sf Density=\dfrac{Mass}{Volume}}[/tex]

SI unit:-

SI unit of density is kg/m^3

CGS unit

CGS unit of density is g/cm^3

Is ambition a good or bad thing?

Answers

Answer:

some amount of ambition is good for your motivation but excess ambition is dangerous.

Convergent plate boundaries are when plates

collide

move past each other

move apart

Answers

Explanation:

Collide is your answer

have a good day.

a hot metal block is placed into 50g of water in an insulated container the water increases in temperature from 20c to 32c the specific heat capacity of water is 4200j/kgk calculate the quantity of heat energy supplied to the water from the metal​

Answers

Answer:

25,000 joules

given the formula

Q=Mc(final temperature - initial temperature)

M=50 grams convert to kilogram 0.5

c= 4200 j/kg/k

final temperature=32c

initial temperature=20c

Can someone tell me which is which on what i put i dont know what i should put

Answers

I am not great at this so if I’m wrong I’m sorry.

Speed:
Distance per time
40 km/h
A scalar quantity

Velocity:
A vector quantity
20 m/s south
Displacement per time

what is pulley? How does it help in lifting weight?​

Answers

Hey there!

A pulley is a "system" that has a rope attached to carry heavy materials off the ground. Once you pull the rope, the heavy item will be carried.

Hope this helps!

Have a great day!

Using a pulley greatly multiplies the force of your physical efforts. A pulley with one wheel allows you to reverse the direction of your lifting force by pulling down on a rope (that's looped over the wheel), lifting your weight. ... The more wheels your rope can loop around, the more weight you will be able to lift.
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