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To examine changes in teaching self-efficacy, 10 teachers were measured on their self-efficacy toward teaching at the beginning of their teaching career and at the end of their 1st and 3rd years of teaching. The teaching self-efficacy scale ranged from 0 to 100 with higher scores reflecting greater teaching self-efficacy. The data are shown here. Conduct a one-factor repeated measures ANOVA to determine mean differences across time, using α = .05. Use the Bonferroni method to detect if and/or where the differences are among the time points.
The density of two liquids (A and is given as 1000 kg/m3 and 600 kg/m3, respectively. The two liquids are mixed in a certain proportion and the density of the resulting liquid is 850 kg/m3.
If the coefficient of kinetic friction between the roof and the box is 0.51, determine with what speed should you push the box to have it gently come to rest right at the edge of the roof
A mass of 1.2 kg is attached to a single spring and set into oscillation. The period of the spring oscillation is measured to be 4.80 seconds. What is the phase constant for the oscillation
A model airplane with mass 0.750-kg is tethered by a wire so that it flies in a circle of radius 30.0-m. Find the angular acceleration of the airplane
A source of sound having a frequency of 330 Hz is moving at 25m/s. If the speed of sound in air is 340 m/s what is the frequency of sound heard by (a) someone in front of the moving source; (b)someone behind the moving source?
A rocket accelerates vertically upwards by ejecting high-speed gases vertically downwards. At the instant shown the weight of the rocket is W and the magnitude of the force the rocket exerts on the gases is T. The magnitude of the net force on the..
Two blocks are connected by a rope that passes over a set ofpulleys. One block has a weight of 908N. What is the acceleration of the lighter block
A mail bag with a mass of 100kg is suspended by a vertical rope of length 8.00m. What horizontal force is necessary to hold the bag in a position displaced sideways a distance 1.00m from its initial position
A 1.00 kg beaker containing 2.00 kg of oil (density=900kg/m^3 rests on a scale, Find the equilibrium readings of both scales
When a metal was exposed to light at a frequency of 4.40 x 1015 s-1, What is the maximum number of electrons that could be ejected from this metal by a burst of light (at some other frequency) with a total energy of 3.48 x 10-7 J
A spring-loaded toy gun shoots a 18 g plastic ball. What is the launch speed if the spring constant is 4.4×104 N/m^3 and the spring is compressed 14 cm
Using Faraday's Law, what is the sum of the potential drops around the outer loop (the loop including both the battery and the inductor) if we move clockwise around the loop?
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