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Suppose high school students work together in small groups to study the material in the courses. Some groups have a strong positive effect, helping the students get on top of the course work. Some groups have a negative effect. And some groups have no effect. Are study groups consistent with the model used by Evans and Schwab? If not, which assumptions are contradicted?
A pendulum clock has an aluminum pendulum exactly 1.0m long when the clock is calibrated perfectly. By how much is it off at the end of one day
What is the value of acceleration of gravity if a pendulum has a length of 46 cm and the pendulum completes 110 full swing cycles in a time of 132 seconds.
A radio galaxy has an angular extent of 2°, and the associated optical galaxy has its spectral lines redshifted by 15% of their rest wavelength
The wave function for a quantum particle is given by ψ(x)= Ax between x = 0 and x = 1.00, and ψ(x) = 0 elsewhere. Find the value of the normalization constant A
Protons in cosmic rays have been observed with kinetic energies as large 2.70 × 108 eV. How fast are these protons moving
The low range of frequencies used for medical applications is about 1,000,000 Hz. What is the wavelength of this frequency in air
The catapults on the USS George H.W. Bush can launch aircraft from rest to a speed of 150 mph over a distance of 270 feet. Find the acceleration of the aircraft
charges of 4.0 micro coulomb and -6.0 micro coulomb are placed at two corners of an equilateral triangle with sides of
A nonconducting solid sphere of radius R has a volume charge density that is proportional to the distance from the center. That is, ? = Ar for r R, where A is a constant. (Use the following as necessary: 0, A, r, and R, as necessary.)
A rifle is meant horizontally at a target 47 m away. The bullet hits the target 2.5 cm below the aim point. What was the bullet's flight time? What was the bullet's speed as it left the barrel?
A stone is thrown out the window of high rise builind at an angle of 37.5° to the horizontal with an initisl speed of 22.0 m/d. from what height was the stone launched
A small ball is attached to one end of a spring that has as an unstrained length of .200m. The spring is held by the other end, and the ball is whirled around a horizontal circle at a speed of 3.00 m/s. The spring remains nearly parallel to the gr..
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