7. Base your answer to the following question on the information below and on your knowledge of biology A student designed an experiment to investigate a claim that athletes would have lower heart rates than nonathletes during exercise. After the students classified themselves as an athlete or a nonathlete, their resting pulses were determined. Then all the students performed the same exercise for four minutes and their heart rates were determined by recording the pulse rate in beats per minute. The students continued to measure their pulse rates for an additional four minutes. The average heart rate per minute for each group was determined. The data were recorded, as shown on the table below Average Heart Rate Response to Exercise (beats per minute) Time (minutes) Athlete Students Nonathlete Students Resting Pulse 68 72 1 76 78 2 82 90 Exercising Period 3 115 95 110 4 130 5 100 125 6 95 120 After Exercise 7 85 100 8 68 95 2.4 To improve the validity of the conclusion reached in this experiment, the students should repeat the experiment A) disregarding any data that don't fit the hypothesis B) with a larger number of athletes and nonathletes C) comparing the heart rates and breathing rates of males and females D) with the athletes doing different exercises than the nonathletes​

Answers

Answer 1
The pulse has to be 130 for I can go through

Related Questions

Which change would best aid a farmer in making the transition from conventional farming techniques to more sustainable farming techniques?
irrigate crops using well water

reduce the ratio of essential elements in the fertilizer

plant only genetically modified crops

rotate the types of crops grown

Answers

Answer:

Rotate the types of drops grown

Explanation:

What is true of electrons?

1. They are negatively charged and located inside the nucleus

2.They are positively changed and located inside the nucleus

3. They are negatively charged and located outside the nucleus

4. They positively changed and located outside the nucleus

Answers

Answer:

electrons are negatively charged and are located in the electron cloud (outside the nucleus)

Answer:

The answer is option 3.

Explanation:

Electrons are negatively charged and is located outside the nuclues.

Protons are positively charged, neutrons are neutral and both are located inside the nucleus.

can multiple people use one brainly account at the same time on a computer??

Answers

Answer:

No

Explanation:

...............................

Multiple people cannot use one brainly account at the same time on a computer.

No, multiple people cannot use the same Brainly account at the same time on a computer. Brainly accounts are designed to be used by individual users and are intended for personal use. Each user should have their own separate account to access and interact with the Brainly platform. Sharing an account among multiple people simultaneously can lead to confusion, conflicts, and potential violations of the platform's terms of service. It is recommended that each person creates their own individual account on Brainly for a smooth and personalized experience.

Hence, multiple people can't access brainly at the same time.

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Which of the following reactants will generate products with a solution of phosphoric acid?
a
Al(s)
b
Cu(s)
c
Au(s)
d
Ag(s)

Answers

Answer:

A. Al(s)

Explanation:

What happens when molten material travels along the underside of the crust?

Answers

Answer:

Explanation:

The earth is comprised of denser materials such as iron and nickel and other siderophile elements in the core and silicate materials in the mantle. The temperature at the core of the earth is extremely high that generates a force, that allows the molten materials (magma) to rise up from the bottom of the mantle towards the crust, in the form of convection currents. This upward movement of magma forces the lithospheric plates to move.

Thus, magma rises from the bottom of the mantle towards the crust.

HELP ASAP!!! Use the drop down menus to complete the sentence. The Florida peninsula is a ____ made of sedimentary rock ____

Answers

Answer:

Plateau, limestone

Explanation:

Edge

Answer:

Plateau, limestone

Explanation:2021

What dose sediment consisting

Answers

Answer:

sediments consist of rocks and minerals, as well as the remains of plants and animals

Explanation:

Where do most earthquakes occur? Where do most volcanoes occur? Why do they occur here?

Answers

Answer:

The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes. The majority of Earth's volcanoes and earthquakes take place along the Ring of Fire

Explanation:

google

Answer:

Most earthquakes occur along the edge of the oceanic and continental plates. The belt exists along boundaries of tectonic plates, where plates of mostly oceanic crust are sinking beneath another plate.

Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. As the plates move, they spread apart, collide, or slide past each other. Sixty percent of all active volcanoes occur at the boundaries between tectonic plates.

How do the particies in a liquid create surface
tension?

Answers

It's been a while since I've taken Chemistry but here's what I know:

There are small, weak bonds that form between water molecules. These bonds make it so liquid molecules (water, in this example) cannot move as freely as a gas, but their bonds aren't nearly as strong as a solid. The bonds are formed when a hydrogen atom is attracted to an oxygen atom (because they have an opposite charge). This bond plus the gas molecules hitting the water causes surface tension.

(Let me know if this is wrong and I hope you have a lovely day!!)

Which statements describe crossing over? Check all that apply. Crossing over occurs during prophase II of meiosis. Crossing over combines a sperm cell with an egg cell. Crossing over happens when pairs of chromosomes pair up. Crossing over ensures that a new cell is identical to the original cell. Crossing over creates new combinations of genes on chromosomes.

Answers

Answer:

Crossing over happens when pairs of chromosomes pair up

Crossing over creates new combinations of genes on chromosomes.

Explanation:

The correct answer would be that crossing over happens when pairs of chromosomes pair up, exchange chromosomal segments, and create new combinations of genes on chromosomes.

Crossing over occurs during prophase I of meiosis when homologous chromosomes pair up to form a tetrad. Paired chromosomes then exchange chromosomal segments containing genes leading to a new combination of genes on each chromosome. Hence, the resulting daughter cells are genetically different from the original cell.

Answer:

a e

Explanation:

The products in this reaction
A have the same properties as the reactants.
В.
have the same atom arrangement as the reactants.
С.
have different properties than the reactants.
D
have fewer atoms than the reactants.

Answers

Answer:

It’s either B or C:

В. have the same atom arrangement as the reactants.

С. have different properties than the reactants.

Explanation:

Sorry, I don’t know a lot about this topic :(

Is zinc radioactive

Answers

Answer:

nu

Explanation:

It has five naturally occurring stable isotopes. The most common stable isotope of zinc is Zn-64. Zn-64 has such a long half-life that it radioactive properties are virtually non-existant. ... Zinc is a hard metal, but becomes very malleable above 100 degrees Celsius.

what is the correct name for the compound MgBr?

Answers

Answer:

Magnesium bromide

Explanation:

its just the answer give brianliest

What is the composition of the most common mineral compounds that make up Earth's crust and mantle? 1 silicon, oxygen, and one or more metal elements 2 sulfates, oxygen, and one or more nonmetal elements 3 carbonates, hydrogen, and one or more organic compounds 4 oxalates, oxygen, and one or more organic compounds

Answers

Answer:

(1) silicon, oxygen, and one or more metal elements

Explanation:

The earth's Crust is mainly composed of

Oxygen, Silicon, Aluminum, Iron, Calcium, Potassium, Sodium and Magnesium. 90% of the earth's Crust is composed of Silicates.

The earths Mantle is almost completely Silicate, oxygen  and magnesium.

if a substance has a large mass and a small volume what can you conclude about?

A. it has a low density
B. it is very dense
C. it is made out of rock or metal
D. it will float on water​

Answers

Explanation:

this answer is a substance has large MS and small volume that are recover Council cute about his sister and brother it has a low distinguish inside incensed a substance is thick and warm

What actions can you take to reduce your impact on the environment?

Answers

Answer:

Use energy more efficiently. Producing electricity and natural gas and delivering it to your door generates greenhouse gas emissions. ...

Install renewables. ...

Conserve water. ...

Reduce, reuse, recycle. ...

Travel less. ...

Consider near sourcing. ...

Ship goods more efficiently.

Completely turn off equipment like televisions and stereos when you're not using them.

Choose energy-efficient appliances and light bulbs.

Save water: some simple steps can go a long way in saving water like, like turning off the tap when you are brushing your teeth or shaving.

Answer:

don't use power when it's not needed

Explanation:

if you use it wisly then less of it is needed to be made to power your things

Worth a lot of points. Please only answer if u know the question. Thanks

Answers

Answer:

#7 is D. #4 is B. #5 is 13 #6 is C

Answer:

okokokokokokokok I will answer in just a moment

Explanation:

15. Name the element that has 3 energy levels and 3 valence electrons. *

Answers

Answer:

aluminium ..............

The two rate statements below are not the same. Use the concept of unit rates to explain
the difference.
a. LaVerne earns $10 in 2 hours.
b. Shirley earns $2 in 10 hours.

Answers

It’s definitely B but I’m not sure

Which of the following is NOT n intensive property?

A. Magnetism
B. Boiling point
C. Thermal conductivity
D. Volume

Answers

The answer is D Volume. Volume is an extensive property.

what is the value of log1.004?​

Answers

Answer:

−0.60205999

Explanation:

An 80 gram sample of a radioisotopes decayed to 40 grams in 3 days how many grams of the original sample would remain after 9 days

Answers

Answer: 10 grams

Explanation: Original sample is 80 gram and every three days half of its composition decays so 80 down to 40 in the first 3 days, 20 in the next three days, and  10 in the last three days

Why cells are called "little giants"?

Answers

Answer:

Giant cell, also called Langhans giant cell, large cell characterized by an arc of nuclei toward the outer membrane. The cell is formed by the fusion of epithelioid cells, which are derived from immune cells called macrophages. Once fused, these cells share the same cytoplasm, and their nuclei become arranged in an arc near the outer edge of the cell. Langhans giant cells typically form at the centre of granulomas (aggregates of macrophages) and are found in the tubercle, or primary focus of infection, in tuberculosis, in lesions of syphilis, leprosy, and sarcoidosis, and in fungal infections.Large cells that form by fusion in reaction to the presence in the body of foreign substances differ from Langhans giant cells in that their many nuclei are scattered throughout the cell. In giant-cell tumours of bone and tendon the cells have many nuclei crowded together. The megakaryocytes, the normal bone-marrow cells thought to be the source of the blood platelets, are also called giant cells.

Explanation:

I'M WORKING ON THIS SUBJECT TOO!!!!!

Which of the following metals is
obtained from its ore by heating?
A Aluminium
B. Calcium
C Iron
D. Lead
F Mercury​ please heeeeeeelp

Answers

Answer:

c. iron I hope it helped.....

Answer:

I think soon mercury ..........

HELP PLEASE ASAP :)

What is the purpose of a salt bridge?
O.
A. To supply energy for the reaction
B. To connect two electrodes
O C. To prevent charge buildup
O D. To dissolve metals into solution

Answers

Answer: B. To connect two electrodes

Explanation:

The salt bridge forms a connecting link between the two electrodes. The function of the salt bridge is not to supply electrons from one electrolyte to another but to maintain a constant balance of charge as the electrons move from one half of the cell to the another. The electrons from from negative electrode to positive electrode that is from anode to cathode.

Answer: C. To prevent charge buildup

Explanation: I just took the quiz.

What is the work done on an object moved a distance of 63 m with a force of 8.5 x 103
Newtons?

Answers

Answer:

5.355 × 10³ Joules

Explanation:

I just had this question on my test

Which of the following redox conditions will produce a spontaneous reaction?
A. The sum of the voltages of the half-reactions is positive.
O B. The sum of the voltages of the half-reactions is negative.
O C. The voltage of the reduction half-reaction is positive.
D. The voltage of the reduction half-reaction is negative.

Answers

Answer:

A. The sum of the voltages of the half-reactions is positive.

Explanation:

correct on  a p e x

Among the following redox conditions those will produce a spontaneous reaction is The sum of the voltages of the half-reactions is positive.

What are redox reactions?

Redox reactions are the reactions in which reduction reaction and oxidation reaction happens simultaneously. The term ‘redox’ is a short form of reduction-oxidation. All the redox reactions can be broken down into two different processes: a reduction process and an oxidation process.

The loss of electrons and the corresponding increase in the oxidation state of a given reactant is called oxidation. The gain of electrons and the corresponding decrease in the oxidation state of a reactant is called reduction.

For example-

H₂ + F₂ → 2HF

Hydrogen is added to Fluorine gas so Fluorine has been reduced but Hydrogen has been oxidised.

Therefore, Among the following redox conditions those will produce a spontaneous reaction is The sum of the voltages of the half-reactions is positive.

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1. What net ionic equation describes the reaction between Pb(NO3)2( aq) and N a2CO3( aq) ?
O 2Na t( aq) + N0, 2( aq) → 2NaNO3( s)
O Pb 2+( aq) + 2Na t( aq) → 2NaPb( s)
O Pb 2+( aq) + CO3( aq) → PBCO3( s)
O 2Na t( aq) + CO3 2( aq) → NacO3( s)

Answers

The answer is C, Pb 2+(aq) + CO3(aq) PBCO3(s)

Answer: C. Pb^2+(aq) + CO3^-2(aq) —> PbCO3(s)

Explanation:

what is observed when an iron bar is dipped into a solution​

Answers

Depends on the solution but most likely it would be oxidation or the gradual process of rust being formed. Could you please list what solution is being used?

Explain the electroplating process of an iron key with silver. the materials provided for electroplating is AgNO3 solution, silver rod and iron key.

Answers

Answer:

See explanation

Explanation:

The process of electroplating an iron key with silver involves electrolysis.

The anode is a silver rod, the electrolyte is AgNO3 solution while the cathode is the iron key. A battery is connected to provide energy to drive the non-spontaneous electrochemical reaction.

Electrons flow from the anode to the cathode. Silver ions from the silver rod replenishes the silver that is deposited on the iron key in order to continue the electrolytic process.

The silver anode is therefore depleted in mass while the iron key increases in mass.

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