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A particular spring stretches 20 cm when a 500g mass is hung from it. Suppose a 2.0kg mass is attached to the string and it is displaced 40 cm from equilibrium position and released. Find the speed of the mass when x = 10 cm.
A battery supplies 0.77 A to three resistors connected in parallel. What is the exact current (in A) through the third resistor
a 30 kg child on a sled slides down a frictionless slope angled at 15 degrees with respect to the horizontal. what is the magnitude of the wind force, F, such that the acceleration of the child is 1 m/s^2
A dolphin in seawater at a temperature of 25 °C makes a chirp. How much time passes before it hears an echo from the bottom of the ocean, 208 m below.
A plane accelerates from rest at a constant rate of5.00 m/s^2 along a runway that is1800 m long. Assume that the plane reaches the required takeoff velocity at the end of the runway.
A stunt man drives a car off a 10 m high cliff at a speed of 20m/s. How far does the car land from the basis of the cliff
A straight wire of radius R carries uniform current density j. Find the magnetic field inside and outside the wire as a function of r, the distance from the center of the wire. Let m be the permeability of free space.
The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires a gun, she is driven back over the edge and into these. Find what recoil velocity does she acquire
What is the magnitude of an average acceleration of the ball
A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation I = (0.839 A) sin [(204 Hz)t]
A spring with spring constant 34N/m is attached to the ceiling, and a 4.6-cm-diameter, 1.4kg metal cylinder is attached to its lower end. what length of the cylinder is submerged
The volume rate of a flow in a horizontal pipe is 4.0 L/s. The diameters of the pipe at points A and B are 4.0 cm and 5.0 cm, respectively. Discover a) the speeds of the flow at points A and B; b) the dissimilarity in pressure between the two points,..
a ceramic coffee cup with m0.113 kg and ccup1090 jkg.degk is initially at room temperature 24degc. if 225 g of 80.3degc
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