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A 125 kg flatbottomed boat is floating along at 5.0 m/s, headed east. Sally Sue, standing at one end of the boat, starts to walk at 2.0 m/s, relative to the bottom of the boat, also to the east. If Sally's mass is 65 kg, what is the speed of the boat as she walks along?
A pendulum, consisting of a ball of mass m on a light string of length 1.00 m, is swung back to a 45° angle and released from rest. What is the velocity of the ball immediately after the collision
A particle with charge ?2 µC is located on the x-axis at the point 4 cm, What is the magnitude of the total electrostatic force on a third particle with a charge of -2 µC placed on the x-axis at -2 cm
A particle moves in simple harmonic motion with a frequency of 2.60 Hz and an amplitude of 6.00 cm. Through what total distance does the particle move during one cycle of its motion
One billiard ball is shot east at 3.0 m/s. A second, identical billiard ball is shot west at 1.0 m/s. What are the speed and direction of the first ball after the collision
Estimate the average force exerted by a shot-putter on a 7.0 kg shot if the shot is moved through a distance of 2.8 m and is released with a speed of 13 m/s
A 2.0 cm tall object is placed 5.0 cm in front of a +12 diopter lens. What is the linear magnification
A system consists of 3.0 kg water at 80 degrees Celsius 30 J of work is done on the system by stirring with a paddel wheel, What is the change in internal enery of the system
What angle does the rope make with the horizontal.
In a carnival they often have a large r = 16 m, cylinder which people stand against the outer wall while it rotates with some velocity, What is the minimum velocity of the cylinder to make someone "stick" to the wall in m/s
A 5.0 kig block is hung from the ceiling on a 2.0-meter-long wire with a mass of 4 g. How long does it take the pulse to reach the ceiling
Suppose the shuttle increases its speed so that it has a length of 36.1 m when viewed by a stationary observer. How long would it take to complete one orbit
A projectile is fired straight up with a speed 64.4 m/s at a latitude 29o in the Northern hemisphere. find the magnitude of the deflection
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