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Q1. A speed skater moving across frictionless ice at 8.60 {rm m/s} hits the 4.20-m-wide patch of rough ice. She slows steadily, then continues on at 5.30 {rm m/s}. What is her acceleration on the rough ice?
Q2. A helicopter is ascending perpendicularly with a speed of 5.42 m/s. At a height of 146 m above the Earth, a package is dropped from a window. How much time does it take for package to reach the ground?
A spring with a constant 150 N/m is attached to a block with a mass 1.5 kg. What is the maximum displacement the mass will achieve
A uniform 210N ladder rests against a perfectly smooth wall, making a 40.0 degrees angle with the wall. Find the normal forces that the wall exert on the ladder
What shape would you expect the sampling distribution of x bar for n=84 juveniles to have? Does your answer depend on shape of the distribution of verbal IQ scores for all juveniles.
One mole of a ideal gas initially at temp To=0C undergoes an expansion at a constant pressure of 1atm to four times it original volume
A cargo plane in flight lost a package because somebody forgot to close the rear cargo doors. You are on the team of safety experts trying to analyze what happened, Calculate the time at which the package fell off the back ramp
Calculation of the ground state of one-dimensional harmonic oscillator using variational Monte Carlo method and How do you know the minimization is good enough?
During a tug-of-war, team A pulls on team B by applying a force of 1200 N to the rope between them, How much work does team A do if they pull team B toward them a distance of 1.3 m
What is the rms speed of nitrogen molecules at a temperature of 37 oC? The mass of a nitrogen molecule is 4.680×10-26 kg
The number of protons in the known universe is about 10^80, and the radius of a proton is about 10^-15m. Estimate the volume of a sphere containing all of these protons if they were placed in contact with each other
An object 0.480cm tall is placed 14.0cm to the left of the vertex of a concave spherical mirror having a radius of curvature of 21.0cm, Find the orientation (erect or inverted) and the nature (real or virtual) of the image
Suppose there is an astronaut who is traveling at a significant fraction of the speed of light. How long does it take according to the astronaut in years
Scenario: You and a friend, who is twice your size, decide to slide down identical water slides at the same time, Who will have the greater momentum at the bottom
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