What lever has resistance between the axis (fulcrum) and the force (effort)? a. first b. second c. third d. fourth
Niobium has a density of 8.57 g/cm3 and crystallizes with the body-centered cubic unit cell. Calculate the radius of a niobium atom.
Hoover believed that the private sector would pull the United States out of the Depression. true false
To what is amplitude related? (1 pointthe amount of energy carried by the wave the maximum displacement from the rest position neither of the above both the first and the second choices above amplitude is related to both the amount of energy carried by the wave and the maximum displacement from the rest position . [ ] [ [ ] ]
Communities of organisms coexist in organized, balanced _____? A-ranges B-territories C-ecosystems D-populations
The position of a 2.75×105n training helicopter under test is given by r⃗ =(0.020m/s3)t3i^+(2.2m/s)tj^−(0.060m/s2)t2k^. part a find the net force on the helicopter at t=5.0s.
An electron is located in an electric field of magnitude 600. newtons per coulomb. what is the magnitude of the electrostatic force acting on the electron?
Calculate the displacement of the volleyball in sample problem 2f when teh volleyballs final velocity is 1.1 m/s upward
Which is a challenge that is most likely unique to urban areas? a. power outages b. shortage of water c. population density d. lack of personal time?
Classify the following substance as diamagnetic or paramagnetic based on its magnetic properties. Drag the appropriate items to their respective bins. Download png
The bent rod is supported at a, b, and c by smooth journal bearings. the rod is subjected to the force f = 980 n . the bearings are in proper alignment and exert only force reactions on the rod. determine the components of reaction at the bearing a using scalar notation.
What is the first thing to check when a refrigerator stops working? a. check the food temperature. if it is 35Â°f or colder, move the food into a working refrigerator b. check the refrigerator thermometer. if it is below 51Â°f, move food into working refrigerator. c. check the food temperature. if it is 41Â°f or colder, move the food into a working refrigerator d. check the food temperature. if it is 32Â°f or colder, move the food into a working refrigerator?
For what purpose are goods and services produced in a socialist economy? profits their usefulness to create demand to meet all consumer needs
How much heat is required to convert 0.3 kilogram of ice at 0°C to water at the same temperature? A. 100,375 J B. 450,759 J C. 334,584 J D. 167,292 J
Choose the statements that are true about bond strength. A. Bonds formed between two atoms with a large difference in electronegativity tend to be strong. B. Strong bonds are easy to break. C. Stronger bonds release less energy when broken than weak bonds do. D. Longer bonds are weaker.
Which of these statements describes experiences or feelings related to anxiety? a. excessive fear of objects or situations b. fear of embarrassment c. constant worry d. all of the above
A rocket is launched straight up from the earth's surface at a speed of 1.80×104 m/s .part awhat is its speed when it is very far away from the earth?
25. Which components of the solar system are indicated by orbits 1-9? Name each component in order from the sun, and classify each according to type.
Researchers aboard the H.M.S. Challenger discovered over 4000 new species of marine life. true or false
Which of the following statements about covalent bonds is false? a. The resulting compound is a poor conductor of electricity. b. The resulting compound can be dissolved in water. c. The resulting compound has a dull appearance. d. The bond can be formed only between nonmetals.
What do electric forces between charges depend on? a. the quantity of charge involved b. how far apart the charges are. c. both a. and b. d. none of the above
As Chelsea removes her clothes from the dryer, she sees sparks, which are examples of ________________. A.) Conduction B.) Induction C.) Static discharge D.) Static Electricity
. Question: 23 of 24:. Which statement is true regarding DC current?. Select one of the options below as your answer:. . A.. The electrons move back and forth.. B.. There can only be one voltage supplied.. C.. A high voltage current can be transformed into a low voltage current.. D.. A low voltage current can be transformed into a high voltage current.. E.. This is what is sent from the power plants to your home..
Which statement best describes why a machine is useful? A-A machine does a greater amount of work than the amount of work that is done on it. B-A machine does a smaller amount of work than the amount of work that is done on it. C-A machine can decrease both the input force and the input distance needed to do a given amount of work. D-A machine can decrease either the input force or the input distance needed to do a given amount of work.