What are the starting materials and products of photosynthesis and cellular respiration?

QUESTION POSTED AT 14/02/2020 - 12:56 PM

Answered by admin AT 14/02/2020 - 12:56 PM

The starting materials for photosynthesis are carbon dioxide, water and sunlight. Green plants have special cell structures called chloroplasts that contain a green pigment called chlorophyll. When chlorophyll is excited by sunlight in the presence of carbon dioxide and water, green plants are able to synthesize carbohydrates through photosynthesis.
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Related questions

Select all that apply. The resistance to an object being pulled over a surface is called _____. starting friction sliding friction static friction kinetic friction

Answer: The correct answer are sliding friction and kinetic friction.

Explanation:

Friction opposes the motion of the objects. It is always directed to an opposite direction of the motion of the object.

Kinetic friction: This friction occurs when the two objects are moving relative to each other.  Kinetic friction is also dynamic friction or sliding friction.

Sliding friction: When the object slides then the friction comes into the play is called sliding friction.

Static friction: When the object is not on the verge of the motion then the friction is called static friction. Here, the friction is more than the applied force. This friction occurs when the two objects are not moving relative to each other.

Therefore, the resistance to an object being pulled over a surface is called kinetic friction or sliding friction.

ANSWERED AT 22/02/2020 - 06:25 PM


QUESTION POSTED AT 22/02/2020 - 06:25 PM

If a racehourse starts from rest and accelerates at a rate of 4.7 m/s2. how long does it take the hourse to go 20 m? A. 4.3 s B. 8.5 s C. 9.1 s D. 2.9 s

i just took this and im 100% sure the answer is:

2.9 s (APEX)

ANSWERED AT 22/02/2020 - 04:18 PM


QUESTION POSTED AT 22/02/2020 - 04:18 PM

The reaction shown below is used in the production of steel. It is an exothermic reaction. An engineer thinks that by finding the correct catalyst, he can reduce the amount of energy released by the reaction. Will his plan have the desired effect? Explain your answer. Fe3O4(s) + 4C(s) → 3Fe(s) + 4CO(g

Catalysts are associated with the kinetics of a reaction, not the thermodynamics. They work by increasing the rate of reaction through lowering the activation energy. A catalyst is not able to alter the enthalpy of a reaction (the amount of heat that is release/absorbed) so it's not going to have the desired effect.

ANSWERED AT 22/02/2020 - 03:49 PM


QUESTION POSTED AT 22/02/2020 - 03:49 PM

If the same amount of heat is supplied to two different materials that have same mass. Why don't they have equal increasing of temperature?

Because both materials hold in the heat differently. Therefore, their temperature would not rise at the same rate.

ANSWERED AT 22/02/2020 - 01:00 PM


QUESTION POSTED AT 22/02/2020 - 01:00 PM

A student was taking a rock-climbing class that used an indoor climbing wall. before he started, the instructoe asked for his weight. if the student had a mass of 88.6kg. what was his weight ?

Weight is the force of gravity acting on a body. By newton's second law, that force can be calculated as W=mg, where g is the acceleration of gravity, 9.81 m/s^2. So, for the intrepid climber, this would be approximately 88.6 x 10 Newtons or about 886 Newtons.

ANSWERED AT 21/02/2020 - 06:30 PM


QUESTION POSTED AT 21/02/2020 - 06:30 PM

Direct current is the flow of an electric charge _____. A. that regularly reverses direction B. that regularly stops and starts again C. that moves in only one direction D. that stops at a specific point

Answer: Direct current =  that moves in only one direction

Explanation :

Electric current is defined as the electric charge per unit time. The electric current is of two types  

  • Direct current
  • Alternating current

In direct current, the current flows one in one direction while in alternating current the current changes its direction periodically.  So, the correct statement that describes the direct current is " (C) that moves in only one direction ".          

ANSWERED AT 19/02/2020 - 12:30 AM


QUESTION POSTED AT 19/02/2020 - 12:30 AM

At ground level g is 9.8m/s^2. Suppose the earth started to increase its angular velocity. How long would a day be when people on the equator were just 'thrown off'? Why is the expression 'thrown off' a bad one ?

Hello there.

At ground level g is 9.8m/s^2. Suppose the earth started to increase its angular velocity. How long would a day be when people on the equator were just 'thrown off'? Why is the expression 'thrown off' a bad one ?

People would not be thrown off.

ANSWERED AT 18/02/2020 - 02:42 PM


QUESTION POSTED AT 18/02/2020 - 02:42 PM

Which of the following materials is able to absorb large amounts of energy without changing temperature very much? air concrete water soil

Answer: Water

The other person also has the correct answer, just paraphrasing.

ANSWERED AT 18/02/2020 - 01:55 PM


QUESTION POSTED AT 18/02/2020 - 01:55 PM

The outer core of the earth is primarily made of A) solid metal. B) molten metal. C) primarily water. D) unknown materials.

I'm not to sure, it's either A or B.

ANSWERED AT 18/02/2020 - 07:21 AM


QUESTION POSTED AT 18/02/2020 - 07:21 AM

A 2 kg rabbit starts from rest and its moving at 6 m/s after 3 seconds . what force must the rabbit cause to makes this change in speed

1. Acceleration= change of speed over the time = from 0 to 6m/s in 3sec= 6/3= 2m/s^2
2. Force=mass times acceleration = 2kg times 2m/s^2 = 4 N
Answer 4N

ANSWERED AT 18/02/2020 - 05:50 AM


QUESTION POSTED AT 18/02/2020 - 05:50 AM

Which of the following materials could have been found in the giant cloud that formed the solar system

The correct answer is Hydrogen and Helium.

ANSWERED AT 18/02/2020 - 04:35 AM


QUESTION POSTED AT 18/02/2020 - 04:35 AM

Using the definition of the scalar product, find the angle between the following vectors. (Find the smallest angle.) a) A = 5i - 9j and B = 5i - 5j (b) A = -8i + 5j and B = 3i - 4j + 2k (c) A= -2i + 2j and B = 3j + 4k

The answer 
a)  a) A = 5i - 9j and B = 5i - 5j
scalar product definition
A.B= //A// //B// cos (A, B), so 

let X = 
(A, B) the angle
cos X = A.B  /   //A// //B// 


A.B = 25+45=70
//A// //B// = 72.80
cos X = 70/72.8  X= arccos (70/72.8)=90°

c) A= -2i + 2j and B = 3j + 4k

A.B= //A// //B// cos (A, B), so 

let X = (A, B) the angle
cos X = A.B  /   //A// //B// 
A.B=2
//A// //B// =14.14
cos X =0.14, X= arccos(0.14)= 81.9°

ANSWERED AT 18/02/2020 - 04:24 AM


QUESTION POSTED AT 18/02/2020 - 04:24 AM

Which environmental hazard is directly related to nuclear power production A.land stripping B.global warming C.radiation leakage D.soil erosion

Answer:

Radiation leakage

Explanation:

Radiation leakage mans radiations scattered in all possible direction through X-ray tube. Due to radiation leakage useful radiations as well as harmful radiations are scattered in all directions. Due to radiation leakage many harmful effect can be observed in the environment. This is hazardous process many times.

Thus radiation leakage through the nuclear power production is hazardous.

ANSWERED AT 16/02/2020 - 04:49 AM


QUESTION POSTED AT 16/02/2020 - 04:49 AM

Suppose you have two bars, one of which is a permanent magnet and theother is not a magnet but is made from a ferromagnetic material like iron.The two bars look exactly alike. Explain how you can distinguish the look-alike bars with the aid of a third bar that is not a magnet, but is made from aferromagnetic material.

The third bar, which we can call the test bar, is known to be a magnet, so it has a north pole and a south pole. Bring one end of each of the two unknowns near the magnet. That unknown bar which is a permanent magnet will be attracted to the test bar when opposite poles are brought together, but it will be repelled from the test bar when like poles are brought together. Both ends of the unknown bar which is a ferromagnetic bar, will be attracted to the test bar. The magnetic field of the test bar will always induce a pole that is opposite in polarity to the pole of the magnet. Ferromagnetism always results in attraction. Hope this helps a lot :)

ANSWERED AT 16/02/2020 - 12:17 AM


QUESTION POSTED AT 16/02/2020 - 12:17 AM

A company in san francisco uses petroleum products to make plastics arrange the sentence in the correct order to show how the company could be contributing to climate change. 1) Burning fuel realeases greenhouse gases. 2) Higher air temperature causes ocean water to evaporate more rapidly 3) greenhouse gases trap solar radiaton and warm up the atmosphere 4) The company burns fuels to make plastic 5) the amount of water vapor in the air rises which further increases the air temperature TIA!!

This is the order of the 5 sentences to make a logic idea that shows how the company contributes to climate change:

4) The company burns fuels to make plastic

1) Burning fuel realeases greenhouse gases.

3) greenhouse gases trap solar radiaton and warm up the atmosphere

2) Higher air temperature causes ocean water to evaporate more rapidly

5) the amount of water vapor in the air rises which further increases the air temperature



ANSWERED AT 14/02/2020 - 01:52 PM


QUESTION POSTED AT 14/02/2020 - 01:52 PM

You start to roll backwards down a hill on your bike, so you use the brakes to stop your motion. In what direction did you accelerate?

If your speed down the hill decreased to zero, then
your acceleration was in the direction UP the hill.

ANSWERED AT 11/02/2020 - 05:38 PM


QUESTION POSTED AT 11/02/2020 - 05:38 PM

The North American and European plates of the Earth’s crust are drifting apart with a relative speed of about 25 mm/yr. Take the speed as constant and find when the rift between them started to open, to reach a current with of 2.9 x 10^3 mi.

Explanation:

It is given that,

The North American and European plates of the  Earth’s crust are drifting apart with a relative speed of  about, v = 25 mm/ yr

We know that, 1\ mm/yr=3.171\times 10^{-11}\ m/s

v=7.927\times 10^{-10}\ m/s

Distance between them, d=2.9\times 10^3\ mi

1 mile = 1609.34 meters

d=2.9\times 10^3\ mi=4667098\ m

Let t is the time when  the rift between them started to open. Speed is given by distance travelled divided by time taken.

t=\dfrac{d}{v}

t=\dfrac{4667098\ m}{7.927\times 10^{-10}\ m/s}

t=5.88\times 10^{15}\ s

Since, 1\ s=3.17\times 10^{-8}\ yr

So, t=18.63\times 10^7\ years

or

t = 1.86 million years

Hence, this is the required solution.

ANSWERED AT 10/02/2020 - 12:44 PM


QUESTION POSTED AT 10/02/2020 - 12:44 PM

Marge simpson decided to start a new garden in her backyard.

Cool is that a actual problem tho?

ANSWERED AT 09/02/2020 - 07:47 PM


QUESTION POSTED AT 09/02/2020 - 07:47 PM

List three examples of selectively permeable material or item

Examples of Selectively Permeable Membranes. Selectively permeable membranes can be found around a variety of cells and places. The most common example is the phospholipid bilayer cell membrane that surrounds every cell in our bodies. Another example of a selectively permeable membrane is the inner membranes of an egg.Nov 5, 2014

ANSWERED AT 09/02/2020 - 07:15 PM


QUESTION POSTED AT 09/02/2020 - 07:15 PM

Which example shows that electromagnetic waves can travel without moving through a specific material (medium)? . . . A.. visible light through a prism. . . B.. sound traveling through a steel beam. . . C.. X rays through skin and muscle. . . D.. light passing through a vacuum tube

example shows that electromagnetic waves can travel without moving through a specific material  is
light passing through a vacuum tube
because it shows that there is no medium
so correct option from above is D
hope it helps

ANSWERED AT 09/02/2020 - 08:21 AM


QUESTION POSTED AT 09/02/2020 - 08:21 AM

True or false organisms that are capable of photosynthesis are called consumers

That's true!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

ANSWERED AT 09/02/2020 - 08:03 AM


QUESTION POSTED AT 09/02/2020 - 08:03 AM

Jenni wants to start a print shop making specialty papers and cards. Which economic question has she answered? a. For whom to produce? b. How much to produce? c. How to produce? d. What to produce?

Answer:

d. What to produce?

Explanation:

the correct answer is d part.

The economic question that Jennie has answered is, "What to produce?". The question comes with the proper evaluation of the area, the populace living in it, the demand, and the amount of supply of the available goods in the area. And after all this research she decides what to produce.

ANSWERED AT 09/02/2020 - 07:37 AM


QUESTION POSTED AT 09/02/2020 - 07:37 AM

Where do I start to solve: A stone is thrown vertically upward with a speed of 12.0 m/s from the edge of a cliff 74.0 m high (a) How much later does it reach the bottom of the cliff? (b) What is its speed just before hitting? (c) What total distance did it travel?

I believe the answer to that question is A. If you can obtain the time it takes to reach the bottom of the cliff, then you can solve for the other two values.

ANSWERED AT 09/02/2020 - 06:02 AM


QUESTION POSTED AT 09/02/2020 - 06:02 AM