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The periodic table is organized to show "periodic" traits of elements. Name at least three properties of elements in the table are traits that follow a periodic pattern.
Graphite and diamond are allotropes of the element carbon. What does this tell you about the two substances? What properties of graphite and diamond must be the same? What properties are different?
What are valence electrons? How do the number of valence electrons control the position of an element on the periodic table?
A laser beam is traveling through an unknown substance. When it encounters a boundary with air, the angle of reflection is 28.2°, What is the index of refraction of the substance
A young boy swings a yo-yo horizontally above his head at an angular acceleration of 0.32 rad/s^2. If the tangential acceleration of the yo-yo at the end of the string is 0.15 m/s^2, how long is string.
A ball is thrown straight upward. At 5.50 m above its launch point, the ball's speed is one-half its launch speed. What maximum height above its launch point does the ball attain?
What is the moment of intertia of the pendulum about the pivot point?
A lens is coated with material of indexof refraction 1.38. What thickness of coating should be used to give maximum transmission
A very long solenoid with a circular cross section and radius r= 6.10 cm with n= 1.20E+4 turns/m has a magnetic energy density uB= 4.50 mJ/m3. What is the current in the solenoid
The dark quarter-circle indicates the path of the negatively charged particle as it passes through a region containing a uniform magnetic field. what is the direction of the magnetic field in the shaded region? Explain your reasoning.
A 2.30 N force pushes it to the left, and a 0.800 N force pushes it to the right. (a) Taking right to be positive, what is the net force acting on it? (b) What is its acceleration?
a youngs double-slit interference experiment gives bright fringes separated by 30.5 cm on a screen when the experiment
A loop antenna of area A = 1.87 cm2 and resistance R = 4.06 µO is perpendicular to a uniform magnetic field of magnitude 19.7 µT. How much thermal energy is produced in joules in the loop by the change in field
You are driving a car which is heading 20 m/s towards a brick wall. You sound a horn which emits at a frequency of 400 Hz when at rest. What is the beat frequency that you hear
A 0.500 kg ball falls directly down onto concrete, hitting it with a speed of 12.5 m/s and rebounding directly upward with a speed of 3.00 m/s. Extend a y axis upward
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