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The length of a simple pendulum is .79 m and the mass at the end of the spring is .24 kg. The pendulum is pulled away from its equilibrium position by an angle of 8.50 degrees and released from rest. Neglecting friction and assuming SHM, what is the speed of the mass as it passes through the lowest point of the swing?
Matt is sailboarding northeast across the river with a velocity of 10 m/s relative to the water. what is the resultant or true velocity of the sailboard
you must determine the acceleration of a rocket so that its equipment can be designed to survive. the rocket will have a burne time of t=30 second, what is maximum altitude of the rocket
A particle is in uniform circular motion about the origin of an xy coordinate system, moving clockwise with a period of 7.70 s. what is its velocity in unit-vector notation
Three point charges are on the x-axis. The first is located at -4 meters asn has a charge of -6 coulombs. What is the net force on the charge at the origin
If a 2-mm diameter pellet is illuminated from the left and the right by laser beams, such with a diameter of 1 cm and a power of 1 megawatt, estime the pressure applied to the pellet, assume all the light that hits the pellet is absorbed.
Two boats are initially separated by distance d and head directly toward one another. The skippers of the boats want to arrive at the same time at the point that is halfway between their starting points.
A 220 g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.150 s. If the total energy of the system is 3.50 J.
Light with all wavelengths present shines on a 1000.0nm thick film of plastic. find all of the visible wavelengths that are seen in the reflected light
A father pulls his young daughter on a sled with a constant velocity on a level surface a distance of 10 m. how much work does the father do
Light of wavelength 700 nm is incident on the face of a fused quartz prism (n = 1.458 at 700 nm) at an incidence angle of 72.4°. Calculate the angle of refraction at the first surface
Spaceship A and spaceship B are racing toward an airless moon at speeds of 0.15c and 0.85c, respectively. What is the speed of the pulse received from spaceship A
An atomic spectrum contains a line with a wavelength centered at 450nm, Estimate the lifetime of the excited state
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