Remake of My harmonious grid by priya ISGi

Hanen Answers

priyaguptaisgi — 2020-03-31 05:18:29 UTC

Why are shiny foil blankets wrapped around marathon runners?
To make sure the heat from their body does not escape.

priyaguptaisgi — 2020-03-31 05:19:14 UTC

Why do shiny teapots keep tea warmer than black teapots?

hanen

priyaguptaisgi — 2020-03-31 05:20:34 UTC

Why houses in hot countries are painted white?
houses are painted white because white is a good reflector and doesn't absorb heat.

priyaguptaisgi — 2020-03-31 05:23:08 UTC

Why are car radiators painted black?

Manar answers

manarhussein — 2020-04-01 06:15:55 UTC

1.Why are car radiators painted black ???
Ans: Black colour are good absorber and Radiator of heat.
2.Why do shiny teapots keep tea warmer than black teapots?
Ans: The shiny metal teapot reflects heat back in on itself and has a lower thermal mass.
3.Why are shiny foil blankets wrapped around marathon runners?
Ans: The blanketsthey are given help the athlete to regulate their body temperature, after a race a runner's temperature will drop quite rapidly because they have ceased working their muscles.
4. Why houses in hot countries are painted white ?
Ans: The reason why houses are painted white in hot countries is because white is not a great absorber of heat. Instead white does not absorb heat, it reflects heat. ... The houses which use darker colours reflects only 15% of the light while white tiles reflects 55%.

Kate's Answers

kateelizabeth1 — 2020-04-01 06:16:11 UTC

absorb - when heat radiation is taken in by an object
reflect - when heat radiation bounces off the object
emit - when a hot object gives off heat radiation...

Why houses are painted white in hot countries?
houses are painted white in hot countries because they are poor absorbers, so they won't absorb so much heat.

Lakshmi

lakshmigayathri — 2020-04-01 06:16:27 UTC

Q1. Car radiators are painted black because black objects absorb and radiate more heat than white objects. Painting the radiator black helps the radiator absorb and radiate (emit) more heat so it keeps the car's engine cool.

lara's answers

laranoureddin — 2020-04-01 06:16:29 UTC

1. why are car radiators painted black
to absorb heat black is a good absorber and radiators of heat.

Abeeha's Answer

abeehafatima — 2020-04-01 06:16:42 UTC

1.Car radiators are painted black so that they can emit radiation quickly.

shaikha's answer

shaikhasaeed1 — 2020-04-01 06:17:51 UTC

Black colour are good absorber and radiators of heat.

Anneliese's Answer

annelieseaala — 2020-04-01 06:18:34 UTC

Why houses in hot countries are painted white?

The houses in hot countries are painted white because the color white cannot absorb heat and is a good reflector.

Zeina’s Answers

zeinaahmed — 2020-04-01 06:18:52 UTC

Why houses in hot countries are painted white ?

Because white color are poor absorbers so they cant absorb heat And they are good Reflectors

Why are shiny foils blankets wrapped around marathon runners?
It helps athletes to regulate their body temperature And the temperature will drop quiet rapidly

Thermal energy /Internal energy: energy stored in the movement of particals.

priyaguptaisgi — 2020-04-01 06:23:14 UTC

zaenabrehan — 2020-04-01 06:25:10 UTC

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

Rimas's Answers

rimasislam — 2020-04-01 06:25:44 UTC

why are radiators painted black?
they are painted black because the color black is a good absorber and radiators of heat.

why do shiny teapots keep tea warmer than black teapots?
The shiny metal teapot repeat heat back in on itself and has a lower thermal mass than a brown china teapot so it stays hot longer.

why are houses painted white in hot countries?
houses are painted white in hot countries because the color white is a poor absorber of heat and is a good reflector.

why are shiny foil blankets wrapped around marathon runners?
they are wrapped with aluminium foil, because aluminium is a good reflector, so it reflects the heat coming out of their body back into their body again so they would stay warm.

priyaguptaisgi — 2020-04-01 06:26:34 UTC

Temperature is how hot or cold an object is.
It is the measure of average kinetic energy of an object.

maria

2020-04-01 06:29:57 UTC

car radiators are painted black because black color absorbs heat and they are good emitters

priyaguptaisgi — 2020-04-01 06:30:09 UTC

Heat transfer: It is the transfer of thermal energy from a hot object to a cold object.

Adviti's Answers

advitianumala — 2020-04-01 06:33:16 UTC

1. Car radiators are painted black as dull, black colours are good absorbers and emitters.
2. Marathon runners wrap themselves with shiny foil blankets after running because aluminium foil is a good reflector so it will reflect heat which is being emitted from the runners back into them.
3. Houses in hot countries are painted white because the colour white is a good reflector and the inside of the house will not be heated.
4. Shiny teapots keep the tea warmer than black teapots as the shiny colours will reflect the heat from the hot back into the tea to keep it warm.

Q1 A television has a power input of 140 W. What is the energy transfer if the television is switched on for 120 seconds?

priyaguptaisgi — 2020-04-03 14:24:07 UTC

Level 2: Q2 Joe is making toast for his breakfast. The toaster uses 500J energy to brown the bread. A total of 750J energy is input to the toaster. Calculate the percentage efficiency of the toaster.

priyaguptaisgi — 2020-04-03 14:39:56 UTC

priyaguptaisgi — 2020-04-03 14:45:12 UTC

Write all the steps and show the calculations.
Always check the units!

Level 2: Q1 The total input energy of Haya's hair straightener is 1600J. 1200J are transferred usefully as heat energy. Calculate the percentage efficiency of hair straighteners.

priyaguptaisgi — 2020-04-03 14:46:46 UTC

Level 3 Q1: Maria has brought a new drill for work. the total input energy is 1.8 kJ. The useful output energy is 800J. Calculate the percentage efficiency of the drill.

priyaguptaisgi — 2020-04-03 14:52:34 UTC

priyaguptaisgi — 2020-04-03 14:59:48 UTC

Level 3 Q2: Hanen bought new speakers for her car. the output of the speaker is 550J. The total energy input is 0.85kJ. Calculate the percentage efficiency.

priyaguptaisgi — 2020-04-03 15:37:10 UTC

Level 3 Q3 : Rupert has a remote controlled car. It is 35 % efficient, transferring 90J of the total energy into useful kinetic energy. Calculate the total energy input , giving your answer in joules.

priyaguptaisgi — 2020-04-03 16:32:35 UTC

Level 3 Q4 : Susie is using a solar calculator. It is 75% efficient , transferring 12J of the total energy into useful output energy. Calculate the total energy input, giving your answers in Joules.

Level 1: Q3 A modern efficient light bulb transfers 9J of energy by light every second. It uses 20J of energy to do this. Calculate the efficiency of the bulb.

priyaguptaisgi — 2020-04-03 16:43:11 UTC

Level 1 Q2:

priyaguptaisgi — 2020-04-03 16:59:58 UTC

These Sankey diagrams show the energy transfers in two televisions. Each television is supplied with 100 J of energy.

a. Which energies are the useful energy transfers? Ans.
b. Which TV is the most efficient?

priyaguptaisgi — 2020-04-03 18:32:01 UTC

Level 1 Q1 What does the efficiency of an appliance tell you ?

priyaguptaisgi — 2020-04-03 19:45:08 UTC

Identify the  wasted energy stores in the following examples.

(ADVITI-7G2 ANSWERS)

advitianumala — 2020-04-04 15:06:23 UTC

Q1 A television has a power input of 140 W. What is the energy transfer if the television is switched on for 120 seconds?

The total amount of energy transferred would be 16,800 J.

Identify the  wasted energy stores in the following examples.

Device 1 : Heat
Device 2 : Heat
Device 3 : Heat
Device 4 : Sound
Device 5 : Sound

KATE (APRIL 5, 2020)

kateelizabeth1 — 2020-04-05 03:42:43 UTC

A television has a power input of 140 W. What is the energy transfer if the television is switched on for 120 seconds?
the energy transfer would be 16, 800 J.

Hanen Sabry

2020-04-05 03:47:42 UTC

It would be 16,800 w

ZARRISH 5/4/2020

zarrishumair — 2020-04-05 03:54:28 UTC

THE ANSWER IS :16,800W

zarrishumair — 2020-04-05 03:56:07 UTC

reflectors.

Anneliese's answer

annelieseaala — 2020-04-05 03:57:18 UTC

A television has a power input of 140 W. What is the energy transfer if the television is switched on for 120 seconds?
-The energy transfer would be 16,800 J.

Haya's Answer Q 1) A television has a power input of 140 W. What is the energy transfer if the television is switched on for 120 seconds?

hayaahmed — 2020-04-05 04:05:07 UTC

The energy transfer would be 16800 J.

zeina

2020-04-05 04:08:52 UTC

it is 16,800J

(Kate's Answers) What does efficiency of an appliance tell you?

kateelizabeth1 — 2020-04-05 04:30:10 UTC

It tells you how well the device transfers energy into the useful forms.

priyaguptaisgi — 2020-05-12 06:34:11 UTC

Comment on importance of fungi in human life.

priyaguptaisgi — 2020-05-12 06:43:05 UTC

Fungi are important to everyday human life. Fungi are important decomposers in most ecosystems. Fungi, as food, play a role in human nutrition in the form of mushrooms, and also as agents of fermentation in the production of bread, cheeses, alcoholic beverages, and numerous other food preparations.

2020-05-12 06:43:12 UTC

Zeina

Hanen's Sabry

hanensabry — 2020-05-12 06:44:12 UTC

Yeast is a single-celled fungus. It is able to ferment sugar, producing alcohol and carbon dioxide in the process. It has long been used to make beer and wine as well as bread (the carbon dioxide causes the dough to rise).

Yeasts are used in the fermentation of fruits to produce wines, cereals to make beer, in bread manufacture and flavoring in the form of yeast extract. Filamentous fungi are used in traditional processes for the ripening of cheeses and in the production of enzymes used in the food industries

Bad fungi are really bad! Some mushrooms can make you sick, even though they look safe to eat. ... If fungi get inside your body, they can cause serious problems. Fungi love animals and plants too - lots of crops are damaged every year because fungi have attacked them!

priyaguptaisgi — 2020-05-12 06:46:40 UTC

Why UAE considers Quinoa is considered as the future of food?

2020-05-12 06:46:46 UTC

Fungi can produce antibiotics

Blue cheese is a type of cheese with a fungus called Penicillium added to it. The fungus makes patches or veins of it look blue. The cheese can be made from cow's milk, sheep's milk, or goat's milk. Types of it include Roquefort cheese, Stilton cheese, and Gorgonzola cheese

2020-05-12 06:48:18 UTC

zeina

ADVITI

advitianumala — 2020-05-12 06:50:53 UTC

Fungi are a useful organisms as they are present in
the food we eat; like the yeast, which is used while
making bread, the blue lines / veins in blue cheese,
mushrooms (which used to be a part of the Plant
Kingdom but is now a member of the Fungi Kingdom
after more research) , and Quorn (a substitute for
meat) which both contain nutrients and much more.
They are even present in Penicillin (a type of antibiotic)
in which we consume as medicine.

Hanen's Sabry

hanensabry — 2020-05-12 06:51:31 UTC

uae considers quinoa as the futre of food because : its ability to grow in high heat and arid soil. It also requires little water to grow — and can adapt to very salty water

mariasarkis — 2020-05-12 06:51:43 UTC

fungi plays important role in the ecosystem

LAKSHMI

lakshmigayathri — 2020-05-12 06:52:13 UTC

Mushrooms are considered as decomposers because they feed on dead or decaying organisms. This process involves the fungi breaking down the organism into smaller parts which they can intake. This removes litter (decaying organisms) on the ground and keeps the ground clean.

we can use fungi to make food, like we use yeast to help make bread for the dough

2020-05-12 06:52:17 UTC

Kate's Answer

priyaguptaisgi — 2020-05-12 06:52:28 UTC

Why mushrooms are considered as decomposers?

Describe the two types of respiration Fungi uses.

priyaguptaisgi — 2020-05-12 06:54:32 UTC

Hanen Sabry

hanensabry — 2020-05-12 06:54:55 UTC

North America is home to three of the major endemic mycoses: histoplasmosis, blastomycosis, and coccidioidomycosis. Their prevalence var- ies by region. These three endemic fungal diseases share many characteristics. Illness is acquired by inhaling aerosolized spores.

Zeina

2020-05-12 06:55:00 UTC

Saprotrophic mushrooms- These species of mushrooms are decomposers. They produce enzymes and acids that help break down dead matter into smaller materials they can take in. Hence decaying plants are a source of food for saprotroph.

priyaguptaisgi — 2020-05-12 06:55:54 UTC

Kate: Yeast is also a type of fungi, they undergo the 2 types of respiration.

Aerobic respiration, it is a type of respiration in which oxygen is required and they release carbon dioxide+ water (+energy).

For yeast to undergo aerobic respiration; bread dough is stretched and folded to get air, then the yeast cells respire aerobically and bubbles of gas make the dough rise. This is also what cause the dough to rise.

Anaerobic respiration, it is a type of respiration in which not a lot of oxygen is required. The anaerobic respiration of microorganisms is called fermentation.

In yeast, this type of respiration produces ethanol. Plants can also use this type of respiration.

Mushrooms are considered as decomposers because they break down/ decompose organic materials

2020-05-12 06:55:54 UTC

Kate

Hanen Sabry

hanensabry — 2020-05-12 06:56:19 UTC

Aerobic respiration, it is a type of respiration in which oxygen is required and they release carbon dioxide+ water (+energy).

Anaerobic respiration, it is a type of respiration in which not a lot of oxygen is required. The anaerobic respiration of microorganisms is called fermentation.

mariasarkis — 2020-05-12 06:56:42 UTC

There are two main types of respiration, aerobic and anaerobic

Maria

LAKSHMI

lakshmigayathri — 2020-05-12 06:58:01 UTC

Aerobic respiration and anaerobic respiration. Aerobic respiration is respiration with oxygen while anaerobic respiration is respiration without oxygen.

hanensabry — 2020-05-12 07:00:55 UTC

how does oxygen get into a unicellular organisms

Hanen's Sabry

hanensabry — 2020-05-12 07:02:08 UTC

it enters through diffusion

zeina

2020-05-12 07:03:52 UTC

Unicellular organisms breathe through direct diffusion via the cell membrane. oxygen diffuses in and carbondioxide diffuse out. Cellular respiration takes place in each and every living cellInstead of the actual process of breathing, oxygen simply enters in their bodies by simple diffusion

Meaning of symbiotic relationship:

2020-05-12 07:04:35 UTC

Symbiotic relationships are a special type of interaction between species
Sometimes it can be beneficial, sometimes it can be harmful

priyaguptaisgi — 2020-05-12 07:05:10 UTC

How symbiotic relation between fungi and plants help in increasing crop yield?

Hanen Sabry

hanensabry — 2020-05-12 07:06:15 UTC

Q )How symbiotic relation between fungi and plants help in increasing crop yield?

A) Most crops can form symbiosis with fungi to gain key nutrients. The fungi in turn gain carbohydrates generated through the plant's photosynthesis. This type of symbiosis is called arbuscular mycorrhizas and is of key importance to sustainable agriculture since it helps crops utilise better the phosphate in fertilisers

Mycorrhizae are symbiotic relationships that form between fungi and plants. The fungi colonize the root system of a host plant, providing increased water and nutrient absorption capabilities while the plant provides the fungus with carbohydrates formed from photosynthesis.

The fungus grows in or on the plant roots. The fungus benefits from the easy access to food made by the plant. The plant benefits because the fungus puts out mycelia that help absorb water and nutrients. Scientists think that a symbiotic relationship such as this may have allowed plants to first colonize the land

Anneliese's answer

annelieseaala — 2020-05-12 07:07:58 UTC

The relationship between plants and fungi is symbiotic because the plant obtains phosphate and other minerals through the fungus, while the fungus obtains sugars from the plant root.

zeina

2020-05-12 07:08:01 UTC

Most crops can form symbiosis with fungi to gain key nutrients. The fungi in turn gain carbohydrates generated through the plant's photosynthesis. This type of symbiosis is called arbuscular mycorrhizas and is of key importance to sustainable agriculture since it helps crops utilise better the phosphate in fertilisers

priyaguptaisgi — 2020-05-12 07:11:18 UTC

THIS GRID IS AMAZING IT'S EASIER TO LEARN AND HAVE FUN IN THE SAME TIME !!!😀💖

hanensabry — 2020-05-12 07:13:18 UTC

(Hanen)

LAKSHMI

lakshmigayathri — 2020-05-12 07:15:23 UTC

ethyl alcohol and carbon dioxide?

Hanen Sabry

lakshmigayathri — 2020-05-12 07:15:41 UTC

Oxygen gets into a unicellular organism

2020-05-12 07:15:49 UTC

Which liquid is produced when yeast cells ferment?

priyaguptaisgi — 2020-05-12 07:16:08 UTC

Hanen Sabry

hanensabry — 2020-05-12 07:16:26 UTC

Q) Which liquid is produced when yeast cells ferment .

A) n addition to oxygen, they require a basic substrate such as sugar. Some yeasts can ferment sugars to alcohol and carbon dioxide in the absence of air but require oxygen for growth. They produce ethyl alcohol and carbon dioxide from simple sugars such as glucose and fructose.

(ethyl alcohol )

zeina

2020-05-12 07:17:49 UTC

Yeast Fermentation and the Making of Beer and Wine ... However, if yeast (ferment) was introduced into the wort after the liquid cooled, ... As a result of respiration, cells produce 36–38 molecules of ATP for each molecule of glucose oxidized.

iam not sure miss

LAKSHMI

lakshmigayathri — 2020-05-12 07:19:04 UTC

Industrial fermentation is the intentional use of fermentation by microorganisms such as bacteria and fungi as well as eukaryotic cells like CHO cells and insect cells, to make products useful to humans. Fermented products have applications as food as well as in general industry

Zaenab

zaenabrehan — 2020-05-12 07:19:14 UTC

Yeast cells ferment to produce ethyl alcohol

zeina

2020-05-12 07:19:22 UTC

In brewing, alcoholic fermentation is the conversion of sugar into carbon dioxide gas (CO2) and ethyl alcohol. This process is carried out by yeast cells using a range of enzymes.

Industrial fermenters. Fermenters are containers used to grow bacteria and fungi in large amounts.

2020-05-12 07:19:29 UTC

kate

mariasarkis — 2020-05-12 07:19:40 UTC

In brewing, alcoholic fermentation is the conversion of sugar into carbon dioxide gas (CO2) and ethyl alcohol.

Maria

explain why the influenza virus damages the tissues in it's host

hanensabry — 2020-05-12 07:21:59 UTC

priyaguptaisgi — 2020-05-12 07:24:43 UTC

Zarrish: Brewers yeast — has been used to make bread since the days of Eden.

Haya Ahmed

hayaahmed — 2020-05-12 07:24:45 UTC

Which liquid is produced when yeast cells ferment?
ethyl alcohol

2020-05-12 07:24:50 UTC

why might a unicellular organisms need oxygen ?

Hanen Sabry

hanensabry — 2020-05-12 07:26:34 UTC

a unicellular organisms need oxygen for respiration .

Zeina

2020-05-12 07:26:35 UTC

Because they are so small, they do not have the organs, pores and entryways to breathe like multicellular organisms. Unicellular organisms breathe through direct diffusion via the cell membrane. ... oxygen diffuses in and carbondioxide diffuse out.

Hanen Sabry

hanensabry — 2020-05-12 07:28:22 UTC

Viruses depend on the host cells that they infect to reproduce. ... When it comes into contact with a host cell, a virus can insert its genetic material into its host, literally taking over the host's functions. An infected cell produces more viral protein and genetic material instead of its usual products.

What is an industrial fermenter?

priyaguptaisgi — 2020-05-12 07:37:39 UTC

Hanen Sabry

hanensabry — 2020-05-12 07:37:59 UTC

Fermenters. Microbes can be used by industry to mass produce certain important chemicals. Some of these, like insulin are used in medicine to treat patients. ... Microbes and nutrients are put into the fermenter and air is bubbled through so that the microbes can respire aerobically.

Well done Hanen

Now research about how Penicillin is produced by growing Fungi in an industrial fermenter

Hanen Sabry

hanensabry — 2020-05-12 07:51:56 UTC

Industrial fermenters. Fermenters are containers used to grow bacteria and fungi in large amounts, eg Penicillium mould for producing penicillin (an antibiotic). ... This removes fungal cells, leaving the product penicillin which will need to be treated chemically before use.

hanensabry — 2020-05-12 10:12:16 UTC

miss please post more Questions 🙏🏻

Hanen Sabry

hanensabry — 2020-05-12 10:18:48 UTC

The structure of the unicellular is made up of a single cell. The structure of the multicellular organisms is made up of numerous cells. ... Amoeba, paramecium, yeast all are examples of unicellular organisms. Few examples of multicellular organisms are human beings, plants, animals, birds, and insects.

Hanen Sabry

hanensabry — 2020-05-12 10:20:45 UTC

watch this it's good

Hanen Sabry

hanensabry — 2020-05-12 10:22:51 UTC

this is how a type of multicellular looks like

Hanen Sabry

hanensabry — 2020-05-12 10:24:41 UTC

watch it

Hanen Sabry

hanensabry — 2020-05-12 10:25:19 UTC

check this out it's really helpful

Hanen Sabry

hanensabry — 2020-05-12 10:27:15 UTC

this is what they do when they fell an animal that is going to eat them is close by (i'm not sure about it ) this layer is very poisonous .

hanensabry — 2020-05-12 10:30:41 UTC

Is fungi multicellular or unicellular ?

Hanen Sabry

hanensabry — 2020-05-12 10:31:54 UTC

Fungi live as either single-celled organisms or multicellular organisms. Single-celled fungi are referred to as yeasts. The vast majority of fungi are multicellular. Most of the body of a fungi is made from a network of long, thin filaments called 'hyphae' ( this is a hyphae)

Rimas Islam

rimasislam — 2020-10-05 11:38:33 UTC

wow... i cant believe that this was 6 months ago now...i really miss you Ms. Priya and i hope you have an amazing teachers day and i love you soo much..
i miss you lots 💝
from Rimas.