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Physics
Page 81
Questions (147,489)
Electrical energy properties quick check
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Which electromagnet will produce the strongest magnetic force?
Electromagnet Y. Electromagnet X. Electromagnet Z. Electromagnet
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Two electromagnets are made with the same core and same type of wire. Electromagnet he has a low intensity current, and
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The energy of motion is called Response area energy. Response area energy is Response area energy that depends on an object's
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What is the best description of heat?(1 point)Responsesthe flow of thermal energy from a cooler substance to a warmer
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Heat and electrical energy: list five materials that would respond to heat and electricity well. what materials have you learn
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Lens and Mirrors Quick Check
1 of 51 of 5 Items Question Which of these best describes the relationship between the incident ray,
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Deep Space 1 was a spacecraft powered by an engine that gave off xenon particles to change velocity. It had a mass of 500 kg.
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6. The diagram shows forces pulling on a box. Use the diagram to answer the questions that follow.
Which change in force would
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Energy and Forces Unit Test
12 of 2012 of 20 Items Question Two magnets with like poles facing each other are brought close to
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Consider the following list of properties. Which applies to light?
A: Mechanical wave B: Electromagnetic wave C: Travels in
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Which color of light has the most energy and why?(1 point)
A) Violet light has the most energy because it has the longest
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Hey student is investigating gravity and falling objects she drops three balls and times how long does it take each of us to hit
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You are fishing in a boat anchored in a bay. You notice that the current is in the eastern direction with small wave crests that
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Position, Distance, and Displacement Quick Check
2 of 42 of 4 Items Question Use the picture to answer the question. An
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A hydraulic lift system has an input piston with an area of 0,5 m2 and an output piston whith an area of 2 m2.
What force is
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What is a newton?(1 point)
Responses a force that pulls objects toward the ground a force that pulls objects toward the ground a
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#Dogmama
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A horseshoe magnet is moved toward a pile of iron shavings. The iron shavings divide and attach to both ends of the magnet. How
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e
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What happens to the temperature & thermal energy applied to an ice cube at 0° C? Mark all that apply.(2 points)
Responses
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7. Which color has a longer wavelength?
* 1 point red green violet yellow
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ur mum
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The mass of a dust particle is approximately 7.5×10−10
kilograms and the mass of an electron is 9.1×10−31 kilograms. Which
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The mass of a dust particle is approximately 7.5×10−10
kilograms and the mass of an electron is 9.1×10−31 kilograms. How
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During halftime of a soccer game, a sling shot launches T-shirts at the crowd. A T-shirt is launched from a height of 4
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A model depicts two balloons of the same size with identical negative charges being moved toward one another at the same speed.
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me
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The north and south poles of two magnets are attached to each other. A student pulls the poles apart and hold them at a distance
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me
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What is the best description of heat?(1 point)
Responses the measure of the average kinetic energy of the particles in an object
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A box is pushed with a force of 15 newtons. If the box moved 3 meters, how much work was done on the box?
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If a force is applied to an object, but it ends up back in its original position, has work been done?
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Which statement best describes the refraction of light as it moves from air to glass?(1 point)
Responses Although the light
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When the string on a violin vibrates, waves move in both directions along the string, interfering with each other. Sometimes
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As a wave travels from one spring to another spring with a different mass, its wavelength decreases by 25%. Which statement
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If a wave transfers from one medium to another medium with different properties, which statement is true?(1 point)
Responses The
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Which example represents a class 2 lever
A.a screwdriver opening a paint can B.a car door being opened and shut C.tweezers
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a) The Earth magnetic field on the equator is directed horizontally from South to North. A power line with the direct current
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Number of Wire Coils (Independent Variable-Y)
15 #1 Number of Paper Clips for C Battery (Dependent variable-X) 2 #2 Number of
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Non-Contact Forces Unit Test
3 of 133 of 13 Items Question Why is glass a good insulator?(1 point) Responses The atoms in glass
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Non-Contact Forces Unit Test
11 of 1311 of 13 Items Question Use the table to answer the question. Electromagnet Current
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Use the table to answer the question.
Student Wavelength Frequency Darius increase increase Kathryn increase remain the same Anya
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What force is required to cause a body of mass 10kg to accelerate uniformly from rest to as velocity of 50ms-¹ In 10s (neglect
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Fatima
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4. When there is a higher concentration (amount) of magnetic field lines; what does that mean for the magnetic field?
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A pulley system is operating at only 50% efficiency. How could the efficiency be increased? (1 point)
Responses by reducing the
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A ball is placed in a machine that throws the ball up in the air. The table represents some points on the graph of a function
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Based on the tire experiment, will it take more, fewer, or the same rotations for a monster truck with 6ft (72 inches) tires to
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dabest
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Two magnets are held apart. Once released, the south pole of one
magnet moves toward the north pole of another magnet until the
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A magnet is moved close to a rubber band. How does the energy
stored in the magnetic field change? (1 point) The energy stored in
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Divers who go to great depths in the ocean experience large differences in pressure between the surface and their final
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iknj
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Use the claim to answer the question.
Claim: Electromagnetic radiation can be described by a wave model or a particle model,
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Which action represents a transformation of chemical to kinetic energy?
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Which statement best describes work?(1 point)
Responses Work is done whenever a force acts on an object. Work is done whenever a
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You drop a tennis ball from a building, what Is the force acting on the tennis ball if it weighs 0.06 kg? Acceleration will be
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