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A dad pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 15 rpm in 10.0 s. Assume the merry-go-round is a uniform disk of radius 2.5 m and has a mass of 560 kg, and two children (each with a mass of 25 kg) sit opposite each other on the edge. Calculate the torque required to produce the acceleration, neglecting frictional torque. What force is required at the edge?
A steel ball with a mass of 50.0g is dropped from a height of 2.30m onto a horizontal steel slab. The ball rebounds to a height of 1.40, Calculate the impulse delivered to the ball during the impact
A microwave oven operates at 2.4 GHz with an intensity inside the oven of 2350W/m^2. What is the amplitude of the oscillating electric field
A pair of speakers separated by 0.700 meter are driven by the same oscillator at a frequency of 675 Hz, Find how far must the observer walk before reaching a relative maximum in intensity
An exoplanet of mass 7.4e26 kg orbits its parent star at an angle of inclination of 28.9 degrees. determine the period of the exoplanet in days
Two satellites, A and B, are in different circular orbits about the earth. Find the ratio (TA/TB) of the periods of the satellites
Two identical blocks of mass m are connected by a cord of length l that runs over a massless frictionless pulley, as shown below. One mass sits on a frictionless horizontal table. Now suppose that the string has a total mass M, which is distributed u..
Total internal reflection will occur when the refraction angle is 90' degrees or more. find the angle of incidence at which total interanl refraction in water will occur
The data are shown as follows. Conduct a two-factor randomized block ANOVA (α = .05) and Bonferroni MCPs using SPSS to determine the results of the study.
An air parcel occupied by an ideal gas (T1 = 255 K, V1 = 1500 m3, m1 = 1680 kg) collides and mixes with a second air parcel occupied by a second ideal gas (T2 = 280 K, V2 = 1200m3, m2 = 1392 kg). Assuming the specific heat capacities of the gases in ..
A race car(m=800kg) starting from rest completes a 450m dragrace in a time of 3s. what is the engine's average power output
a solid conducting sphere of radius 2.00 cm has a charge of 8x10-6 c. a conducting spherical shell of inner radius 4.00
A 0.105-kg hockey puck moving at 24 m/s is caught and held by a 75-kg goalie at rest. With what speed does the goalie slide on the ice?
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