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Jayleen Gregory
Which of the following describes effort force?
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Mark Oneal
What does the chemical formula CaCl2 show about the compound it represents?

It is made up of one element.

It is made up of two elements.

It is made up of three elements.

It is made up of four elements.
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Shyla
An electron with kinetic energy of 2000 eV (1 eV = 1.602 x 10-19 J) is fired horizontally across a horizontally oriented conducting plate with a surface charge density + 4.00 x 106 C/m2. Taking the positive direction to be upward (away from the plate), what is the vertical deflection of the electron after it has travelled a horizontal distance of 4.00 cm?
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First Mate
A vertebra is subjected to a shearing force of 535 N. Find the shear deformation, taking the vertebra to be a cylinder 3.00 cm high and 4.00 cm in diameter. The shear modulus for vertebrae is 8.00 * 1010 N/m2.
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Braxton
If radio waves cannot be reflected from the Sun, how can radar be used to find the distance from Earth to the Sun?
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Priscilla Knapp
When an atom loses an electron, it becomes a

a. positive ion.

b. negative ion.

c. neutral ion.

d. neutral atom.
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Dayami
A hydraulic lift has two pistons: a small one of cross-sectional area 5.00 cm2 and a large one of cross-sectional area 300 cm2. What minimum force must be applied to the small piston in order for the large piston to lift a truck of mass 4500 kg
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Diana Terry
What is the meaning of the phrase "grand unified theories" when applied to particle physics and cosmology?
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Humberto Santos
A 26.0 kg wheel, essentially a thin hoop with radius 1.30 m, is rotating at 297 rev/min. It must be brought to a stop in 23.0 s. (a) How much work must be done to stop it? (b) What is the required average power? Give absolute values for both parts.
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Albert Huffman
A net force of 200 newton's is applied to a wagon for 3 seconds. this causes the wagon to undergo a change in momentum of
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Mckenzie Combs
Explain ways that weak and strong nuclear forces are alike.
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Lacey Ramirez
Which of these are crystalline solid glass, sugar, rubber, plastic
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Khalil Petersen
A 45.0 g golf ball moves to the right 273 km/h and strikes another ball at rest. they collide elastically and the golf ball moves to the left 91 km/h. If the other ball moves 182 km/h to the right, what is its mass?
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Freddy Parsons
To get an spaceship into orbit, it has to move

about as fast as the speed of sound

about as fast as the speed of light

about 18,000 miles per hour

there is no minimum speed for orbital motion
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Kaylen Garner
What is the role of the air spaces in insulating materials? Select all that apply.

They trap heat in the spaces.

They puts gaps between the particles to slow down conduction.

They dissipate energy faster.

The make the material thicker so energy has to travel a further distance.

Allow electrons to move around more freely
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