A remote control for a television works by sending out electromagnetic waves. Which is the best description for the behavior of the waves? a.The speed of the waves changes as it moves through the air, so the waves refract and diffract. b. The remote control sends out longitudinal waves, which then echo off the television detector. c. Transverse waves from the remote transmit through air, which are then absorbed by the television detector.
Being unable to play tennis due to extreme heat is an example of a(n) __________. a. cost factor b. personality factor c. equipment factor d. environmental factor
Identify the atom with the following ground-state electron configuration for its valence shell 4s23d104p6
Ice wedging is brought about by ____. a.carbonic acid freezing on rocks c.water freezing and thawing b.water and oxygen reacting d.rocks colliding with each other
Which question must be answered to complete the table below? What kind of shielding will block beta decay? What is the penetrating power of beta decay? What kind of particles are produced by beta decay? How massive are the particles in beta decay?Download png
Which statement correctly describes the earth's magnetic field? the geomagnetic south is consistent with a magnetic south. the geomagnetic north is similar to the south pole of a magnet. the earth's magnetic poles are the same magnetic charge at the poles. the earth does not have a consistent pattern of magnetism.
Which of the following is a small star that has reached the end of its stellar evolution? Neutron star Red giant Stellar nebula White dwarf
Which of the following has kinetic energy? a. a rock poised for a fall b. an archer’s bow that is drawn back c. a rolling bowling ball d. a car waiting at a red light
The _______ is the innermost layer of the Sun's atmosphere. A. solar prominence B. photosphere C. heliosphere D. chromosphere
What fuel(s) are the main energy source during short, intense bursts of exercise? Metabolism of protein only Metabolism of fat only Metabolism of carbohydrate only Carbohydrates and vitamins Caffeine Medium-chain triglycerides Erythropoietin Carnitine
The Sun produces energy by fusing hydrogen atoms into ____ atoms in its core. a. carbon c. iron b. helium d. oxygen
Which best describes a compound such as sodium chloride? A) a pure substance that can be separated into different elements by physical means B) a mixture of two common substances that can be separated by chemical means C) a mixture of two common elements that can be separated by physical means D) a pure substance that can be separated into different elements by chemical means
The force of ________ is the force at which the earth attracts another object towards itself. A. inertia B. friction C. gravity D. momentum
A one-repetition maximum is most important in developing muscle __________. A. strength B. size C. endurance D. appearance
Calculate the root mean square velocity of nitrogen molecules at 25 C. a. 515 m/s b. 149 c . 729 got wrong d. 297 m/s
The Golden Rule is helpful to us because it is ______. a. Universal b. Easy to understand c. Ethically sound d. All of the above
Which change increases the electric force between objects? Two neutral objects are moved closer together. Electrons are added to two negatively charged objects. Two oppositely charged objects are moved farther apart. The charge on two positively charged objects is reduced.
Which of the following is a function of the atmosphere? a. facilitating the movement of water through spheres through transpiration b. providing a moderate, livable climate c. facilitating the process of photosynthesis d. serving as the interface between all spheres
Which type of electromagnetic waves make up the colors of a rainbow seen after a storm? visible light infrared light X-rays ultraviolet light
Compared to yellow light, orange light has A. the same frequency. B. a faster wave velocity. C. a longer wavelength. D. a different polarization.
How does Bohr’s model of the atom compare with Thomson’s model? They both describe atoms as small, indivisible spheres. They both describe electrons as moving around the nucleus. They both describe electrons as being surrounded by the positive matter. They both describe atoms as being made up of positive and negative matter.
What happens to the intensity of solar energy as latitude increases?it stays the same. it increases. it doubles. it decreases?
Which of the following soil types is richest in organic material? A. Red soil B. Dark-colored soil C. Blue soil D. Yellow soil
The magneto air gap is a precision measurement that's taken between the a. edge of the flywheel and the ignition coil armature. b. two breaker point contacts. c. spark plug terminal and the ignition coil. d. center electrode and the grounding electrode of a spark plug
Which of the following is a way that trees have been negatively impacted by human use? a. deforestation b. pollution c. reduction d. all of the above
Which of the following is true of both nuclear fusion and nuclear fission? a. They both require a high energy input. b. They both occur without byproducts. c. They both have a high energy output. d. They both involve large atoms breaking into smaller atoms.
Please help me! A ball is thrown forward at 5 m/s. How would the path of the ball differ on Earth than on the moon? A. The ball would follow a curved path on Earth but a straight path on the moon. B.The ball would follow the same curved path on Earth as on the moon. C,The ball would curve down more sharply on Earth than on the moon. D.The ball would curve down on Earth but curve up on the moon. Please hurry!