What is the working resistance of a bulb that takes a current of 0.25 A when it is connected to 220V mains supply?

Answers

Answer 1

Answer:

880 Ω (Ohms)

Explanation:

To calculate Resistance from Potential Difference (Volts) and Current (Amps), you use the equation R = V/I

So,

R = 220/0.25

R= 880


Related Questions

Explain the water cycle in your own words. make sure u tell the steps in order

Answers

Answer:

Collection - Evaporation - Condensation - Precipitation

Explanation:

The Water cycle is a series of continuous events that cause rain

How does this support the theory that whales evolved from walking mammals? in embryo evidence

Answers

Answer:

A embryo's, Whales have small back limbs which disappear before birth.

Explanation:

There are lots of evidence in a whale's body and biology suggesting its ancestors lived on land. They have paddle-shaped flippers that encase hand bones with five 'fingers,' and they breathe air and feed their young with their own milk.

Which statement best defines the term inherited trait?

A. behaviors passed down from parents
B. physical qualities passed down from parents
C. physical qualities parents teach children to have
D. physical qualities and some behaviors passed down from parents

Answers

Answer:

d

Explanation:

some physical qualities from our parents, it's a good chance we will inherit some of their qualities.

What causes water pollution?

Answers

Answer:

Good answer below, just adding on

Explanation:

Runoff of chemical products, animal waste, and especially human waste products such as different types of trash like scrap metals and plastic greatly increase water pollution. Additionally, oil leaks and spills can also lead to severe water pollution. As a general statement I'd say that human activities that are not monitored and are either directly dumped into water ways or are caught in run off cause water pollution.

Choose all that apply for Grasslands

Select 3 correct answer(s)
Question 2 options:

Contains grasses and woody plants


occur in all climatic zones


rainfall is low


no trees and shrubs

Answers

Answer:

no tree shrubs rainfall is low contains grasses and woody plants correct me if I'm wrong

Answer:

B. occur in all climatic zones

C. rainfall is low

D. no trees and shrubs

Explanation:

The brain, spinal cord, and nerves are all major organs of the ___ system.

Answers

Answer:

nervous system

Explanation:

nervous system

nervous systemsystemsystem

How do the data support your claim above?
Explain your statement above. Be sure to refer to specific pieces of data from your experiment that support your argument.

Answers

Answer:

i need more information give me more pictures

Explanation:

lol

Answer:

the data will support my theory if the results are right for my hypothisis

Explanation:

Part A Cut off the top and one side of the milk carton as shown. Use the hole punch (or scissors) to make two holes on opposite sides of the carton. Make sure the holes are low enough for the rubber band to launch the car. Thread the rubber band through the holes, and secure it using paper clips. Stretch the rubber band to launch the toy car away from the box. Pull back the rubber band to different distances, and explain what happens.​

Answers

Answer:

the harder you pull on the rubber band the further the toy launches.

Explanation:

because i got it right and its common sense

Which statement best describes the relationship between the sun and moon during a spring tide?

The sun and the moon are aligned.

The sun and the moon are revolving around the Earth at the same speed.

The sun and the moon are at 45° angles to each other.

The sun and the moon are at 90° angles to each other.

Answers

Answer:

i think c

Explanation:

The sun and the moon are at 45° angles to each other.

Explain why a food web is a better illustration of an ecosystem]= than a food chain

Answers

Answer:

The food web provides a better model of an ecosystem because the food web is a model between MANY different consumers and producers in an ecosystem. … The food chain would break down and if the food chain breaks down all the animals would die, and the ecosystem will no longer exist.

Explanation:

Which of these shows the common stages of growth for a flowering plant?
leaves, seed, shoot, root system, stem or trunk, flowers
stem or trunk, root system, seed, shoot, leaves, flowers
seed, shoot, root system, stem or trunk, leaves, flowers
flower, seed, shoot, stem or trunk, root system, leaves

Answers

Answer:

c

Explanation:

C because

leaves don’t ever come first (A)

it just doesn’t make sense (B)

the flower does not come first (D)

To calculate acceleration you must
Select one:

multiply the force and mass

add the force and mass

divide the mass by the force

divide the force by the mass

Answers

Add the force and mass is your answer
Divide the force my mass

Which two substances are among the four major types of organic compounds made by living things?
A. Phosphates
B. Nitrates
C. Proteins
D. Lipids

Answers

Answer:

Lupids

Explanation:

D:)

C and D proteins and lipids

Oxygenated blood leaves the lungs and enters which heart chamber?

Answers

left atrium

Oxygen-rich blood flows from the lungs back into the left atrium (LA), or the left upper chamber of the heart, through four pulmonary veins. Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber.

Please help!!
What do scientists do when they want to name a new organism?
all of the above
They see how the organism is similar to other organisms.
They see if the organism has the characteristics of an animal or plant.
They look at what makes the organism unique.

Answers

Answer:

All of the above

Explanation:

I believe all three are true. They see how the organism is similar to other organisms. They see if the organism has the characteristics of an animal or plant. They look at what makes the organism unique.

It’s should be all of the above I believe

when salt dissolves into water does it change its state

Answers

Answer:

no it doesn't change back

fine here When you dissolve salt in water, the sodium chloride dissociates in Na + ions and Cl - ions, which may be written as a chemical equation : NaCl (s) → Na + (aq) + Cl - (aq) Therefore, dissolving salt in water is a chemical change. The reactant (sodium chloride, or NaCl) is different from the products (sodium cation and chlorine anion).

Part H In parts E, F, and G, which data sets (corrective lenses, glasses, or contacts) show the most similar variation between Doctors?

Answers

Answer: Doctor A Corrective Lenses: 745, 726, 769, 765, 756, 742, 757, 748, 770,

Explanation: I took the test! i have a great day :)

How is a mixture such as a plate of pasta different from a mixture such as air

Answers

Answer:

Well there is a lot of differences between the two. Its called homogeneous and Heterogeneous mixtures. Homogeneous mixtures are all the substances are evenly distributed throughout the mixture (salt water, air, blood).  Heterogeneous mixtures are the substances that are not evenly distributed (chocolate chip cookies, pizza, rocks). So Pasta with sauce and meatballs is heterogeneous and air is homogeneous




HOPE THIS HELPS HAVE A GREAT DAY!!~

Explanation:

Think of at least 10 things you can do to help preserve our freshwater or to clean up our polluted water

Answers

Answer:

#1 Clean up trash so, they don't get into sewers.
#2 Don't use up water.

#3 Do small loads of laundry

#4 Keep shower time minimal

#5 Pay your taxes to the government can fix pipe lines or fix lead-made pipes

( Five ideas, that's all i can think of)

Explanation:

Here’s another 5 things to add on to the other persons answer.

1: Dont flush any out of date medicines down the toilet or drain

2: Dont put anything except water down drains

3:Pick up after pets

4: Avoid using chemical fertilizers

5:Choose non-toxic household products whenever possible

What happens to an object if the total of the forces acting on it are greater than zero?
Select one:

Nothing will happen to the object.

The object’s motion will change.

The object will move forward.

The object’s motion will remain the same.

Answers

The objects motion will change
B is the correct answer

HELP PLEASE AND QUICK!!!!!!!!!!!!!!!!!!!

Make a prediction for what science and technology may uncover in the next few decades.

Answers

My prediction for what science and technology may occur in the next few decades is the increase of groundwater increasing, with many drought occurrences to the environment. For technology, I suppose that there may be some new inventions for both political and environmental usage to increase the intensification of agriculture in order for us to have crops to eat. Furthermore, I predict that our significant key issues are resolved as time goes on, such as global warming, inflation, ocean acidification, etc.

i need help w this..
A pneumonic device is a memorization tool that helps you remember things. For example, if you can read music you probably have heard, “Every Good Boy Does Fine” to learn the names of the lines on the treble clef EGBDF. Or maybe your math teacher taught you, “Please Excuse My Dear Aunt Sally,” to help you remember the order of operations. It is now your turn to think of a pneumonic device to remember the water cycle in order. Write your pneumonic device below.

Answers

evaporation condensation transpiration precipitation
Emily, come to papa

A soft lump of clay has water run on top of it. Most of the water and clay runs off the table. After a long while, the water is turned off and allowed to dry. There is no clay left; instead, there are small pebbles and other types of components left on the table.
Which natural process is this modeling?

A. physical weathering

B. deposition

C. erosion

D. chemical weathering

Answers

The answer is C erosion
the answer would be Erosion

A foil boat measures 4.0cm by 5.0cm and has a mass of 100.0g. If you put the boat in water, how far will it sink? (Recall the density of water is 1.0 g/mL) (answer with a number; units are cm)

Answers

Answer:

Let the volume of the block of wood be

V

c

m

3

and its density be

d

w

g

c

m

3

So the weight of the block

=

V

d

w

g

dyne, where g is the acceleration due to gravity

=

980

c

m

s

2

The block floats in liquid of density

0.8

g

c

m

3

with

1

4

t

h

of its volume submerged.So the upward buoyant force acting on the block is the weight of displaced liquid

=

1

4

V

×

0.8

×

g

dyne.

Hence by cindition of floatation

V

×

d

w

×

g

=

1

4

×

V

×

0.8

×

g

d

w

=

0.2

g

c

m

-3

,

Now let the density of oil be

d

o

g

c

m

-3

The block floats in oil with 60% of its volume submerged.So the buoyant force balancing the weight of the block is the weight of displaced oil =

60

%

×

V

×

d

o

×

g

dyne

Now applying the condition of floatation we get

60

%

×

V

×

d

o

×

g

=

V

×

d

w

×

g

60

100

×

V

×

d

o

×

g

=

V

×

0.2

×

g

d

o

=

0.2

×

10

6

=

1

3

=

0.33

g

c

m

3

Explanation:

help with science question

Answers

Answer:

(4) Inner core. (5) magma. (6) crust (7) Convection current. (8) energy waves

Explanation:

inner core, magma, crust, convection current, energy waves

what are some consequences of water pollution?

Answers

Answer:

At the bottom

Explanation:

-Destruction of aquatic flora and fauna
-Economic downturns
-serious health problems


And more!! We need to beware of our actions

Can someone help with this?
--
I don't understand what to do for this part

Answers

You would turn the decimals into a percent, then you would subtract that number from 100. Put that into decimal form.
For example, aluminum’s percent error would %10

Answer:

You would turn the decimals into a percent, then you would subtract that number from 100. Put that into decimal form.

For example, aluminum’s percent error would %10

Explanation:

the figure shows the great ocean conveyor belt. which best describes what this model represents?

A. The model shows how ocean currents change the salinity of water.

B. the model shows how ocean currents move heat energy around earth

C. the model shows how salinity of water affects its density

D. the model shows how the density of water differs between the north Atlantic and other parts of the ocean.

Answers

Answer:

d

Explanation:

The ocean conveyor belt shows the movement of the oceanic water and the salinity. The model represents the density of the water in different regions of the world. Thus, option d is correct.

What are ocean conveyor belts?

Ocean conveyor belts are the oceanic current movement in their oceans across others and how the water moves across the water bodies across the globe.

The model shows that high salinity water gets heavy and sinks in the ocean of North Atlantic but the water of the Indian and the pacific oceans are less saline and remains at the surface.

Therefore, option D. the water differs in oceans based on density.

Learn more about ocean conveyor belts here:

https://brainly.com/question/3401456

#SPJ2

As the of the force of the shot increased, ___ ?
the puck traveled ?
This is because a force leads to a bigger change in an object's motion ___ ?
Friction had the effect on the puck's movement ?
as the friction force increased, the puck traveled ?
This is because friction works in the direction as an object is moving ?

Answers

It will go fast and fast because force on a object makes it go faster but as soon as not more force is being applied be begans to slow down

What is a sedimentary rock?

A. a type of rock that is formed over long periods of time by layers of silt building up on the floor of a body of water

B. a type of rock formed over long periods of time by the cooling and solidification of molten Earth material

C. a type of rock that is formed in a very short period of time by sudden violent volcanic eruptions into the ocean

D. a type of rock that is formed over long periods of time by the transformation of existing rock types

Answers

Answer:

answer is D

Explanation:

sedimentation is the process to make the sedimentary rock. they are formed by using minerals or fossils or other rock types

It would be A, sediment builds up over time and is compressed into rock over millions of years. That is why when you look at sedimentary rock is has clear layers of sediment. Hope this helps you out!
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Answer po pls mo hatag ko og brainliest pls po need na find the value of x super easy 7th grade math A buoy starts at a height of 0 in relation to sea level and then goes up. its maximum displacement in either direction is 6 feet, and the time it takes to go from its highest point to its lowest point is 4 seconds. which of the following equations can be used to model h, the height in feet of the buoy in relation to sea level as a function of time, t, in seconds? h = 4 sine (startfraction pi over 6 endfraction t) h = 4 sine (startfraction pi over 3 endfraction t) h = 6 sine (startfraction pi over 4 endfraction t) h = 6 sine (startfraction pi over 2 endfraction t) a rectangle has an area of 473.2 m one of the sides is 9.1m in length answerh what is the perminiter Write each equation in slope-intercept form.(If correct, will give brainliest) why were steamboats an improvement over earlier forms of transportation such as horses and wagons ?HELPP asap>:) Circle the word with a different sound!plis! What is the FIRST STEP to solve this equation?3x+2=17Question 5 options:Add 2 to both sidesSubtract 2 from both sidesMultiply both sides by 3Divide both sides by 3 The federal government has the powerto collect taxes. As a result, it chose tocreate the Internal Revenue Service(IRS).The creation of the IRS is what kind ofpower?A. ConcurrentB. ExpressedC. Implied Find mS12x +4G40FED4x Giving Brainliest!(This is very easy!)Miss Gonzales opened an account with a deposit of $2,000. The account earned annual simple interest. She did not make any additional deposits or withdrawals. At the end of 6 years, the balance of the account was $2,696. What is the annual interest rate on this account ? A scale model of a large, three-dimensional real world object uses a scale of 0.5 in. = 50 ft.Fred was only able to measure the model using metric units. He measured the length of the model as 372.5 mm.Fred knows that 1 inch = 2.54 cm and that 1 cm = 10 mm.What is the approximate length of the actual real world object? A. 244.3 ft B. 122.2 ft C. 2,932 ft D. 1,467 ft Complete each sentence with minimum or maximum and the corresponding numeric values.The value of f(x) = |x 4| 5 is when x = .The value of f(x) = x2 2x + 1 is when x = . Which line plot matches the following data for the fraction of an hour that students spent on the computer: 12,23,13,13,12,13,14,23,23,12. Examine the differences between the person-job and person-organisation theory, using Hollands Typology of Personality and congruent occupations as an example under Social What is the value of x? If f(x) is a linear function such that f(2)= 5 and f(4) = 13, f(x) = ?A) 3x - 4 B) 4x - 3 C) 4x + 3 D) 1/4x + 9/2 3. Hahn determined that barium (atomic number 56) was one of the elements created when a uranium atom (atomic number 92) split . Use a periodic table to determine the other element that was created during this process. What is the recursive rule?Question 2 options:an = an+1 + 500; a1 = 30,000an = an1 + 30,000; a1 = 500an = an1 + 500; a1 = 29,500an = an1 + 500; a1 = 30,000 I NEED HELP GIVE ME ANSWER QUICK!!!!