Hot Student Stories

Physics

Which of the following is true of all minerals? A. Made of many different elements B. Come from the ground as crystals C. Can be liquids, solids, and gases D. Made of one or more elements from the periodic table

Donald Ward

follow
followin
1 answer
5 views

Which statement is true of AC current?. Select one of the options below as your answer:. . A.. It uses a battery as a power source.. B.. It can easily be transformed from high voltages to low voltages.. C.. It is typically low voltage.. D.. the electrons are moving in one direction. E.. It was the first type of electric current invented..

Kevin Sutter

follow
followin
1 answer
5 views

A mass movement that involves the sudden movement of a block of material is called a A. rockfall. B. slide. C. slump. D. flow.

Megan Page

follow
followin
1 answer
5 views

Scientists are concerned about the release of methane from the arctic because _______. a. as a greenhouse gas methane is 20 times more potent than carbon dioxide b. the mass of the arctic’s methane is comparable to that of the Earth’s coal beds c. global warming appears to be accelerating its release d. all of the above

Mindee Nelson

follow
followin
1 answer
23 views

Calculate the force on an object that has a mass of 12kg and an acceleration of 4m/s2

Ramon Kelly

follow
followin
1 answer
5 views

Which of the following activities is most likely to result in nutrient pollution? a. cutting down trees b. pouring motor oil down the drain c. excess fertilizer use d. none of the above Please select the best answer from the choices provided A B C D

Whitney Matthews

follow
followin
1 answer
5 views

What is a pattern of behavior that you often repeat? a lifestyle a habit an activity a goal

Mindee Nelson

follow
followin
1 answer
7 views

A doctor diagnoses a man with an acute strain. Which job is most likely to cause an acute strain? furniture mover bank teller baseball player heart surgeon

Megan Page

follow
followin
1 answer
6 views

Anorexia is a type of eating disorder that usually begins in young people a. with obese parents b. around the onset of puberty c. around the time they graduate high school d. who watch too much tv

Eric Morgan

follow
followin
1 answer
5 views

Which of the following statements is true about scientific theories? A. Scientific theories become scientific laws. B. Scientific theories are never proven. C. Scientific theories become hypotheses. D. Scientific theories summarize patterns found in nature

Timothy Norman

follow
followin
1 answer
5 views

What force is needed to give a 0.25-kg arrow an acceleration of 196 m/s2?

Ross Pratt

follow
followin
1 answer
5 views

22. The main difference between speed and velocity involves A. direction. B. weight. C. distance. D. gravity.

Blair Lewis

follow
followin
1 answer
7 views

Global winds move warm air toward the _____.

Whitney Matthews

follow
followin
1 answer
6 views

0.005kg is how many dag

Dana Keller

follow
followin
1 answer
5 views

Gamma rays are produced by applying ___________ A.) electric and magnetic fields at right angles to each other B.) electric and magnetic fields parallel to each other C.) crests and troughs at right angles to each other D.) crests and troughs parallel to each other

Samantha Barber

follow
followin
1 answer
5 views

Which best describes the results of Becquerel’s experiments?

Rodney Fox

follow
followin
1 answer
5 views

What is the length of the shortest open-closed tube needed to produce this frequency?

Jeffrey Rodriguez

follow
followin
1 answer
5 views

In creating products from trees, only half of the tree can be used

Bethany Evans

follow
followin
1 answer
5 views

Which characteristic of life best describes the process of photosynthesis? using energy containing cells reproducing growing and developing

Annie Barnes

follow
followin
1 answer
7 views

Which of the following describes work? A. Energy acts on an object. B. Force acts on an object. C. Force acts on an object and causes a displacement of that object. D. Friction only acts on an object and causes a displacement of that object.

Megan Page

follow
followin
1 answer
5 views

Which unit of pressure is derived from the early barometers used to measure pressure? mmHg bar Pa atm

Rodney Fox

follow
followin
1 answer
5 views

What observations characterize solar maximum?

Ralph Lopez

follow
followin
1 answer
5 views

To calculate the dashed orbits from the stellar positions, astronomers had to assume that __________.

Bethany Evans

follow
followin
1 answer
5 views

Which type of electromagnetic radiation cannot be focused?

Amanda Johnson

follow
followin
1 answer
10 views

Which statement about tornadoes is correct? a. They are a very common part of thunderstorms. b. Seventy-five percent of the world’s tornadoes occur in the United States. c. Their danger is mainly from the heavy rains they bring. d. They are the strongest storms on Earth.

William Cain

follow
followin
1 answer
5 views

The process of estimating values between measured data points is called

Rodney Fox

follow
followin
1 answer
6 views

What sound signal tells a river lock attendant that you wish to go through the lock?

Roger Moore

follow
followin
1 answer
6 views

What is the weight, on Earth, of a book with a mass of 1.5 kg

Tara Andrews

follow
followin
1 answer
5 views

If a wave has a wavelength of 9 meters and a period of 0.006, what is the velocity of the wave?

Dana Keller

follow
followin
1 answer
13 views

Nuclear reactions result in tremendous amounts of a. uranium. b. energy. c. fission. d. mass.

Victoria Fowler

follow
followin
1 answer
7 views

Developing poise under pressure and building self-esteem are benefits toward your __________. A. mental health B. social health C. physical health D. spiritual health

Kyle Mckinney

follow
followin
1 answer
5 views

The oldest features on the moon are _____.

Chelsea Hayes

follow
followin
1 answer
5 views

Describe by using the atomic model as an example, the usefulness of models in science.

Ralph Lopez

follow
followin
1 answer
5 views

How do scientists determine the number of neutrons in an isotope of an atom? A. They find the number of protons. B. They divide the atomic mass by two. C. They add the number of electrons and protons. D. They subtract the atomic number from the atomic mass.

Craig Stewart

follow
followin
1 answer
0 views

Isaac Newton’s investigations of gravity explained which of the following? A. Earth is not the center of the universe. B. Jupiter has more moons than earth. C. Gravity acts on all objects in the universe. D. The sun is more massive than earth.

Alexa Spicer

follow
followin
1 answer
5 views

How many revolutions does the object make during the first 4.0 s?

Roger Moore

follow
followin
1 answer
6 views

Who speaks the line "Lord, what fools these mortals be"? A. Oberon B. Cobweb C. Mustardseed D. Puck

Ross Pratt

follow
followin
1 answer
5 views

Did Kepler propose the modern model of the solar system?

Heather Maxwell

follow
followin
1 answer
5 views

Which of the following is responsible for the flow of electrons in a circuit? electrostatic force electromotive force any force exerted by electromagnetic radiation the force of a magnetic field on a static charge

Jessie Thompson

follow
followin
1 answer
5 views

Why do underwater objects appear distorted when you see them from above? reflection refraction diffusion diffused reflection specular reflection

Kaitlin Dean

follow
followin
1 answer
6 views

The change in the wind patterns on the Earth that causes an increase in ocean temperature is: a. El Niña c. La Niña b. El Niño d. La Niño

Kevin Sutter

follow
followin
1 answer
5 views

Because plate movements have raised ancient sea floors above sea level,

Samantha Barber

follow
followin
1 answer
5 views

Well-designed weight-training programs only target two or three body areas. a. True b. False

Cynthia Baker

follow
followin
1 answer
5 views

A force that causes mass movement is called a. distance c. weight b. gravity d. none of the above

Rodney Fox

follow
followin
1 answer
6 views

TRUE OR FALSE Culture creates the context for behavior in society.

Ronald Miller

follow
followin
1 answer
5 views

Which best defines partial pressure in a mixture of gases? a pressure that is exerted by all the gases of a mixture on the container b pressure that is exerted by one gas as if it occupied a container by itself c half of the pressure that is exerted by the gases of a mixture on the container d sum of the individual pressures that are exerted by two or more gases

Kristi Hammond

follow
followin
1 answer
8 views

Artists Michaelangelo, Raphael, and Leonardo da Vinci belong to which period of the Renaissance? a. Early Renaissance b. High Renaissance c. Late Renaissance

Deborah Edwards

follow
followin
1 answer
8 views

Figure 17-1 shows a wave movement during 1 second. What is the frequency of this wave? A. 2 hertz B. 2 meters/second C. 0.5 second D. 1 hertz Download jpg

Mindee Nelson

follow
followin
1 answer
6 views

You shovel snow along your driveway. If you wanted to increase your power, you would _____. A.) increase either your work or the time it takes B.) decrease either your work or the time it takes C.) increase your work or decrease the time it takes

Ashley Howard

follow
followin
1 answer
5 views

What was the collective name for the four ancient sporting tournaments in Greece? Olympic Games

Ramon Kelly

follow
followin
1 answer
5 views