Which of the following was formed from leftovers in the solar system? the comet the planets in the upper left corner the sun the planets to the right of the sun
Which statement correctly describes a property of white light?. . A. It makes all objects appear white.. . B. It contains different wavelengths of visible light.. . C. It allows light waves to be transmitted.. . D. It contains all waves on the electromagnetic spectrum.
Without the greenhouse effect the Earth would be _______ than it is today. a. warmer b. drier c. colder d. wetter
The energy derived from the digestion of food is __________. a. kinetic energy b. inertia c. momentum d. chemical energy
What kind of motion indicates a system where the net force equals zero only accelerating objects only stationary objects both accelerating and stationary objects only objects moving with a constant positive velocity stationary objects as well as objects moving with a constant velocity
Which statement about electrons and atomic orbitals is NOT true? An electron has the same amount of energy in all orbitals. An orbital can contain a maximum of two electrons. An electron cloud represents all the orbitals in an atom. An atom’s lowest energy level has only one orbital.
The _____ is the region of the Sun where energy moves through circulating currents of gases. photosphere, corona, core, radiative zone, chromosphere, or convective zone
Heat can never flow from __________. a. hot to cold b. cold to hot c. liquid to solid d. solid to liquid
Which of the following statements is untrue in regard to sound traveling in air? A. As the distance from the Earth increases, the sound wave intensity also decreases due to the lessening density. B. The area covered by the wave front increases as the wave advances, but the energy passing through a wave front in a unit of time decreases. C. During a single vibration of the diaphragm, molecules in the air near it will also complete one vibration. D. Sound waves in the air are transverse and consist of compressions and rarefactions of air molecules.
Which of the following statements is a consequence of the equation E = mc2? A. Energy is released when matter is destroyed. B. Mass and energy are equivalent. C. The law of conservation of energy must be modified to state that mass and energy are conserved in any process. D. all of the above
In order for work to take place Select one: A. the energy present must be related to the movement of the object. B. the force applied must be a balanced force resulting in motion of the object. C. the force applied must cause the movement of the object in the same direction as the force. D. the movement of the object must be the cause of the force.
A metal bolt with a mass of 8.50 x 10^-2kg and a temperature of 85.0 degrees Celsius is placed in a container of water. The mass of the water is 0.150 kg, and its temperature is 25.0 degrees Celsius. What is the specific heat capacity of the bolt if the final temperature of the bolt and water is 28.4 degrees Celsius? (Cp.w = 4186 j/k* degree Celsius)
Why would you expect sodium (Na) to react strongly with chlorine (Cl)? 1. They both need to lose one electron. 2. They both need to gain one electron. 3. Sodium needs to lose one electron, and chlorine needs to gain one electron. 4. Sodium needs to gain one electron, and chlorine needs to lose one electron.
Which rigid transformation would map abc to edc? a rotation about point b a reflection across the line containing cb a reflection across the line containing ac a rotation about point c?
What distinguishes mass from weight? a. mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity on the object. b. weight is a measure ofthe amount of matter in an object, while mass is a measure of the force of gravity on the object. c. mass is a measure of an object's inertial force, and weight is the force exerted by that object on other objects. d. mass and weight are synonyms and ultimately describe the same principle?
When a wire is made smaller, the resistance increases. Which happens to the electric current? A) The current decreases. B) The current increases. C) There is no effect on the current
Which of the following statements is a consequence of the equation E = mc2? A Energy is released when matter is destroyed. B Mass and energy are equivalent. C The law of conservation of energy must be modified to state that mass and energy are conserved in any process. D all of the above
One degree Celsius indicates the same temperature change as? A. One degree Fahrenheit B. 5/9 degree Fahrenheit C. One Kelvin D. 9/5 Kelvin
When discussing discordant and harmonious sound waves, which statement is false? A. Low ratios of the frequencies of the original and resultant waves indicate discordant waves. B. If the original waves combine to form irregular displacements of air, the sound will be discordant. C. Knowing the frequencies of the original waves is useful in determining if the result will be discordant or harmonious. D. Both types of waves are the result of component waves with different frequencies.
Most of the circuits in your home are a. parallel circuits. b. switch circuits. c. series circuits. d. reversible circuits.
For INELASTIC collisions, which of the following statements can be true? Choose all that apply. Momentum is conserved. Momentum is lost. Kinetic energy is lost. Momentum is gained. Kinetic energy is conserved. Kinetic energy is gained.I put a and c and it says it wrong down to my last tries.
Which statements about acceleration are true? check all that apply. a. the si units of acceleration are m/s2. b. for acceleration, you must have a number, a unit, and a direction. c. to calculate acceleration, divide the change in speed by the change in time. d. the symbol for acceleration is .
Which would cause the greatest increase in the acceleration of a satellite?a decrease in the radius and the tangential speedan increase in the radius and the tangential speeda decrease in the radius and an increase in the tangential speedan increase in the radius and a decrease in the tangential speed
The area of a circular trampoline is 108.94 square feet. What is the radius of the trampoline? Round to the nearest hundredth. A. 10.44 feet B. 5.89 feet C. 34.68 feet D. 3.32 feet
What lever has resistance between the axis (fulcrum) and the force (effort)? a. first b. second c. third d. fourth
An endothermic reaction is one that uses which form of energy?Nuclear FusionElectrical EnergyChemical EngerySound Energy