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Physics
Page 78
Questions (147,472)
Students built two electromagnets. The electromagnets are the same except that one has 20 wire coils around its core, and the
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The graph models the temperature in degrees Fahrenheit, of a cup of hot water placed in a refrigerator. Based on the graph, what
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A steel block rests on a wooden plank, 6m long. At what height must the one end of the plank be lifted above the other end to
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Use the graph on page 14 of the reading to answer the following question. What unit is temperature measured in for this graph?
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micro
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Question 1
A)A student observes interactions between two sets of electrically charged objects. In each set, the objects carry
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anime i love anime
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Analyzing Gravitational Data Quick Check
1 of 41 of 4 Items Question Which has more air resistance: a flat sheet of paper or a
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The mass of a dust particle is approximately 7.5x10^-10 kilograms and the mass of an electron is 9.1x10^-31 kilograms. Which
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A metal plate is a 1 m square at 283 K. There is a hole of 600 mm in diameter in the The linear coefficient of expansion of the
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ADIVHAHO
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What term is used to describe the combination of two traveling waves in the same material, which can be constructive or
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Question 13 (1 point)
A television remote control is used to direct pulses of electromagnetic radiation to a receiver on a
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gaga
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A package is dropped from a helicopter flying at a height of 7.5 m while traveling 15 m/s. How far does the package travel
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Aubrey
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Efficiency of Machines Quick Check
1 of 51 of 5 Items Question Which car has the greatest efficiency?(1 point) Responses a 1,200
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gibbereish4245254764e7dyhtj gfvc
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A science class is conducting an investigation to see how gravity affects objects of different masses. They drop three balls
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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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3. Why do sound waves travel faster through warm air? *
The molcules in warm air move slower. The molecules in cold air move
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When using a pully, what are you changing about the force? *
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Rachel is learning about electromagnetic radiation that comes from the Sun. What types of electromagnetic radiation does the Sun
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Which statement explains why astronauts appear to bounce when they are walking on the moon?(1 point)
Responses The force of air
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it sucks
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A nickel and a sheet of paper, which have approximately the same mass, are dropped at the same time from the same height. The
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it sucks
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On which object will Earth’s gravity act with the greatest magnitude?(1 point)
Responses a television a television a banana a
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A coin (5 grams), a small parachute (21 grams), and a hammer (710 grams) are all dropped from a height of 10 meters. The coin
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What is the electromagnetic force?(1 point)
a force that attracts objects with mass towards each other a force that holds atomic
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What is a major division between gravity and the electromagnetic force on one hand and the nuclear
forces on the other?(1 point)
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A large circular disk of mass 2kg and radius 0.2m initially rotating at 50rad/s is coupled a smaller circular disk of mass 4kg
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Hanaayana
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If a car travels 400m in 20 seconds how fast is it going? Calculating Speed
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Investigating Gravity Quick Check
4 of 44 of 4 Items Question Use the table of criteria for an investigation to answer the
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Interference of Waves Quick Check
3 of 43 of 4 Items Question A wave interference where the wave amplitudes combine to yield a
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Donald Craven
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W1. A steel ball with mass 40.0 g is dropped from a height of 2.00 m onto a
horizontal steel slab. The ball rebounds to a height
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Jeremiah latkuoth
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A person pushes a box. He applies a force of 400 Newtons and he pushes the box for a distance of 4 meters after he stops pushing
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An electric current produces a(n):
A) solenoid B) magnetic field C) magnet D) insulator
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14.Calculate the quantity of heat required to raise the temperature of 10g of ice
from −10°C to steam 110°C and draw the
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Jeremiah latkuoth
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Two electromagnets are made with the same core and the same type of wire. Electromagnet A has a low-intensity current, and
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A rectangular glass block 5cm thick is placed on top of the page of a book. If the refractive index of the glass block is
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Kombo abdallah
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A science class is conducting an investigation to see how gravity affects objects of different masses. They drop three balls
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robertツ💎
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Which type of wave can carry energy through a vacuum?
Types of electromagnetic radiation include radio, microwave, infrared,
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Question
Which example represents a class 2 lever?(1 point) Responses salad tongs picking up salad salad tongs picking up salad
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ghsd
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Gravity Unit Test
2 of 122 of 12 Items Question Why does a beach ball weigh less than a bowling ball?(1 point) Responses The
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Match the vocabulary word to its definition. Column A 1. attraction: attraction 2. magnetic field: magnetic field 3. electric
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What would happen to a substance at the theoretical temperature of 0 K?(1 point)
Responses The substance would turn from liquid
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How does an open parachute slow a skydiver's fall?
• The parachute increases the force opposing gravity. O The parachute pulls
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What does an object's weight measure?
A. the amount of matter the object contains B. the gravitational force that is acting on
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Which object will experience the least amount of gravitational attraction toward Earth?
A. a 380-gram cup B. a 75-gram calculator
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Which of the following is true about sound waves?
a. Sound moves faster in a lake than in the ocean. b. Sound would move faster
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what causes the spinning rotor spin? a)large electromagnet b)turbine c)the transmission line d)high pressure
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When an electron falls from a higher energy level to a lower energy level, it will give off energy in the form of light,
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Would rather read
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Electric Circuits Quick Check
1 of 51 of 5 Items Question A circuit in a home provides power to a light fixture. The homeowners
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LLL
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oger wants to use a magnet to pick up a sheet of metal, but his magnet is too far away to attract. What is a possible solution?
a
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An electromagnet is a coil of wire with a current running through it. This creates an electromagnetic field. An additional
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What happens when thermal energy is applied to an ice cube
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Me
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More coils are produced when the wire is wrapped tightly around the iron core. What will happen to the property of the
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.
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