As an electron approaches a proton, the electric force of attraction A. decreases B. increases C. remains the same
With his Square Deal, Theodore Roosevelt hoped to a. help pull the United States out of the Great Depression. B. increase the influence and power of the United States among the nations of the world. C. keep the wealthy and powerful from taking advantage of small business owners and the poor. D. help business trusts remain competitive.
How does the charge of a particle affect the direction in which the particle is deflected in a magnetic field?
For most people, the majority of their total energy expenditure is from their basal metabolism energy intake physical activity thermic effect of food
The ability to regulate the amount of charge flowing in a circuit is Pennfoster: (A. resistance.) B. direct current. C. alternating current. (D. voltage.)
The concentration of atmospheric carbon dioxide is currently decreasing due to human activities. TRUE OR FALSE?. .
The ultimate source of energy that drives wind power is __________. view available hint(s) the ultimate source of energy that drives wind power is __________. the sun friction between the earth's plates, produced by plate tectonic movements and earthquakes ocean currents differences in the temperature of the earth's surface because of internal heating by magma, which occasionally rises to the surface in volcanoes
You have a pumpkin of mass m and radius r. the pumpkin has the shape of a sphere, but it is not uniform inside so you do not know its moment of inertia. in order to determine the moment of inertia, you decide to roll the pumpkin down an incline that makes an angle θ with the horizontal. the pumpkin starts from rest and rolls without slipping. when it has descended a vertical height h, it has acquired a speed of v = √(5gh/4).
How many shifts must you work if you wish to wash 10 loads of laundry? express your answer numerically as an integer?
How much energy does the electron have initially in the n=4 excited state?what is the change in energy if the electron from part a now drops to the ground state?
It is the same distance from second base to first base, and from second base to third base. The angle formed by first base, second base, and home plate has the same measure as the angle formed by third base, second base, and home plate. What can you conclude about the distance from first base to home plate, and from home plate to third base? Explain. ...?
Magma that cools and crystallizes on Earth's surface forms A. quartz. B. marble. C. intrusive rocks. D. extrusive rocks.
Two meteoroids are heading for earth. their speeds as they cross the moon's orbit are 1.0 km/s . part a the first meteoroid is heading straight for earth. what is its speed of impact?
If the organ pipe is cut in half, what is the new fundamental frequency? if the organ pipe is cut in half, what is the new fundamental frequency? 4f0 2f0 f0 f0/2 f0/4
Which of the following energy sources is expected to have the highest rate of consumption in 2030? a. coal b. natural gas c. nuclear d. renewable energy
Which of the following is a myth about water conservation? a. An important part of water conservation is preventing water pollution. b. Buying bottled water conserves more water than drinking from the tap. c. Air-drying clothes conserves more water than using an electric clothes dryer. d. A front-loading washing machine uses less water than a top-loading washing machine.
Which best compares a nondigital and a digital camera? A. A nondigital camera produces images using mirrors, and a digital camera produces them using lenses. B. A nondigital camera produces a real image, and a digital camera produces a virtual image. C. A nondigital camera uses a concave lens to capture light, and a digital camera uses a convex lens. D. A nondigital camera uses film to record images, and a digital camera uses sensors.
Which of the following is a typical product of nuclear fission? a. oxygen b. carbon dioxide c. radiation d. water
9. The three types of stress that act on Earth's rocks are compression, tension, and A. strain. B. shear. C. tephra. D. shale.
Which of the following statements are true about metallic bonds? A. Metallic bonds hold together atoms with somewhat similar electronegativities. B. Metallic bonds hold together two atoms of two different nonmetals. C. Metallic bonds exist between two atoms of the same element. D. Metallic bonds hold together a water molecule.
1. What length of time does the geologic time scale cover? a. 2.0 million years b. 4.6 billion years c. 20.5 billion years D. 10.1 million years 2. The largest expanse of time on the geologic time scale is the____. a. Eon b. Epoch c. Era d. Period 3. Which eon of the geologic time scale means "visible life"? a. Phanerozoic b. Proterozoic c. Hadean d. Archean
Fusion occurs in the _______ of the Sun, where the pressure and temperature are very high. a. photosphere b. core c. chromosphere d. solar wind
Which best illustrates the way in which radiation transfers thermal energy? (in order from top to bottom) A. B. C. D. Download png
Which one of the following environments will sound not travel through? A. Liquid B. Gas C. Solid D. Vacuum
Magnetic reversals have helped to support a. the theory of Pangaea. c. sea-floor spreading. b. the age of the Earth. d. the theory of Gondwana.
There are no negative consequences to using nuclear energy. Please select the best answer from the choices provided a. True b. False
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
22. The main difference between speed and velocity involves A. direction. B. weight. C. distance. D. gravity.
Which characteristic of life best describes the process of photosynthesis? using energy containing cells reproducing growing and developing