an alarm clock draws 0.5 a of current when connected to a 120 volt circuit. calculate its resistance.
Jose has a solid green ball. Which color(s) of light does this ball reflect? A. blue and yellow B. green C. all colors except green D. white
Which uses the refractive properties of light to separate it into its different wavelengths? A. white light from the surface of a mirror B. colored light as it travels from a solid medium to a liquid medium C. visible light as it passes through a lens D. sunlight through droplets of water in the atmosphere
What causes nickel and certain other metals to be magnetic? A. the motion of protons in their atoms B. the pattern of electrons in their atoms C. their atoms have more electrons than protons D. the influence of the earth's magnetic field Where is the magnetic field of a bar magnet the strongest? A. at the north and south poles B.between the north and south poles C.in the middle of the magnet D.next to the south pole
True or false The bending of a wave is called reflection (reflection is underlined) If false write the correct for the underline word
A sled of mass m is being pulled horizontally by a constant horizontal force of magnitude F. The coefficient of kinetic friction is μk. During time interval t, the sled moves a distance s, starting from rest. Find the average power Pavg created by the force F.
How did Howard Gardner's theory of intelligence differ from previous theories? Gardner said intelligence was determined solely by one's environment, rather than genetics. Gardner theorized that one can improve intelligence through study, rather than being a static portion of one's personality. Gardner identified intelligence as multidimensional, with at least 8 different types of intelligence, instead of being a single-dimensional factor. Gardner viewed intelligence as an offshoot of one's personality, whereas previous theories viewed intelligence and personality as 2 separate entities.
Why is it easier to keep your position steady once the train is moving at a constant speed and direction?
The light in this diagram is producing light. Which best describes the process of energy conversion to accomplish this? A. Electrical energy turns the rod. This energizes the coil. The magnetized coil generates an electric current. The electric current goes through the wires to power the lightbulb. B. Mechanical energy turns the rod. This electrifies the coil. The electrified coil generates a magnetic field. The magnetic field goes through the wires as electricity to power the lightbulb. C. Mechanical energy turns the rod. This magnetizes the coil. The magnetized coil generates an electric current. The electric current goes through the wires to power the lightbulb. D. The magnetic energy in the coil turns the rod. The rod generates an electric current. The electric current goes through the wires to power the lightbulb.
