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A physics professor claims in court that the reason he went through the red light (λ = 660 nm) was that, due to his motion the red color was Doppler shifted to green (λ = 520 nm). How fast was he going?
A mass m slides without friction on a 1-dimensional track. The mass is moving from left to right with initial velocity v0. Determine the position where the mass will come to rest
A spring lies on a horizontal table, and the left end of the spring is attached to a wall. How far can the spring be stretched from its unstrained position
A challenge gaining prominence throughout the planet is the increased need for \"green\" or sustainable energy. In certain parts of the country, how much energy does the wind turbine generate
A radioactive isotope has an activity of 9.32×104 Bq initially. After 3.55 hours the activity is 6.71×104 Bq. What is the half-life of the isotope?
The rock reaches a maximum height of 2×10^3 m, above the surface of the planet, before it falls back down. What was the first speed of the rock as it left the astronaut's hand.
At time t = 0 and at position x = 0 m along a string, a rightward (+x dir) travelling sinusoidal wave with frequency of 220 Hz has displacement y = +4.0 mm, What is the smallest positive phase angle for this wave
if one micrometeorite a sphere with diameter of 1x10-6m strikes each square meter of the moon each second how many
a uniformhorizontal string has a mass of 0.030 kg and a length of 6.00 m. this string is attached toa wall at one end.
Find out the direction of the train motion
An electron and a 140-g baseball are each traveling110m/s measured to a precision of 0.055%. Calculate the uncertainty in position of the electron
q1. throughout a hard sneeze your eyes may shut for 0.41 s. if you are driving a car at 98 kmh during such a sneeze how
A electric model train travels at 34.7 cm/s around a circular track of radius 1.61 m. Find the train's period of revolution
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