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Physics
Page 79
Questions (146,489)
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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How is an electromagnetic field produced?(1 point)
Responses when a current runs through a conductor when a current runs through
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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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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 machine’s efficiency is determined to be 60%. The input work is 3,000 joules. What is the output work?(1 point) Responses
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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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Below is a picture of four animals and their common names. In the space below, write the name of the animal that would have the
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13. Gravitational attraction is defined as "An attractive force between all objects with mass in our universe." Since humans
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A model shows rays of sunlight moving straight from the sun perpendicular to the surface of the Earth. What are these rays
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What type of quantity is momentum?
Group of answer choices It is a scalar quantity because it involves magnitude only. It is a
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Ilikecookies2009
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A group of students sets up an electric circuit with wires, a battery, and a light bulb. Why is their circuit called a direct
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In which fundamental interaction can matter transform into a different type of matter
A) strong B) gravity C) weak nuclear force
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Which of the following objects is most likely to have the greatest air resistance?
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A group of students sets up an electric circuit with wires, a battery, and a light bulb. Why is their circuit called a direct
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How do scientists support claims about different models of light?(1 point)
Responses They use reasoning to prove which model is
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Nuclear reactions can be written out in equation form with information about the nuclei that take place in the fusion reaction
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hatemaths
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In 1–2 sentences, explain how to make an electromagnet.(2 points)
And write like a fourth grader
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u dont know me
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A feather and a bowling ball are in free fall when...
a gravity is the only force acting on them. b gravity and air resistance
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e
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In a nuclear reaction, which is the same before and after the change?(1 point)
Responses the types of atoms the types of atoms
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Which option would be an appropriate model of nuclear fusion?(1 point)
Responses adding a drop of water to a glass of water
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Which statement best describes the process of alpha decay?(1 point)
Responses An unstable nucleus rearranges its particles and
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Which option correctly compares beta decay(a particle) and gamma decay (pure energy)?(1 point)
Responses Beta decay only reduces
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Use the equation to answer the prompt.
106 C→ 105 B + 0+1 e A student claims that the equation models beta-minus decay because
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Which statement best describes the process of alpha decay?(1 point)
Responses An unstable nucleus releases an electron. An
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How does a flashlight illustrate the Law of Conservation of Energy?
• It is an electric circuit through which electrical energy
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Use the image of a person lifting a boulder with a lever to answer the question.
An illustration shows a man using a stick and a
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The vertical displacement of the wave is measured from the
Group of answer choices equilibrium to the crest and is called the
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21-25. A cannon is fired from the top of a cliff that is 50 meters high above the ground. The cannonball is launched with an
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The speed of a wave is 65 m/sec. If the wavelength of the wave is 0.8 meters, what is the frequency of the wave? (MUST INCLUDE
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sunrise_lover09
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