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A horizontal spring is lying on a frictionless surface. One end of the spring is attached to a wall whle the other end is connected toa movable object. The spring and object are compressed by0.074 m, released from rest, and subsequently oscillate back and forth with an angular frequency of11.6 rad/s. What is the speed of the object at the instant when the spring is stretched by 0.041 m relative to its unstrained length?____________ m/s
Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 7.0 g.Silver has 47 electrons per atom, and its molar mass is 107.87g/mole.
A beam of 16MeV deuterons (m=2mp) from a cyclotron falls on a copper block. The beam is equivalent to a current of 15 microA, At what rate do deuterons strike the block
Capacitors C1 = 5.65 µF and C2 = 2.75 µF are charged as a parallel combination across a 250 V battery. Calculate the resulting charge on each capacitor
what speed does the rock have as it strikes the ground?
a negative charge of -0.550uC exerts an upward 0.205n force on an unknown charge 0.305m directly below it. what is the direction of the force that the unknown charge exerts on the -0.550uC charge
A railroad car of mass 3.0x10^4 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, what is the speed of the three coupled cars after the collision
How many atoms are there in a cubic centimeter of a solid and what is the velocity of the motorist relative to the police car and what is the velocity of the police car relative to the motorist?
A block of mass M hangs from a spring having spring constant k = 12 N/m and oscillates up and down with simple harmonic motion. What is the maximum speed of the block
The intensity of the sound wave from a jet airplane as it is taking off is 85 W/m2 at a distance of 4.0 m. What is the intensity of the sound wave that reaches the ears of a person
You walk 75.0 m to the east, then turn 35.0 degrees to the north and walk another 55.0m. Determine the magnitude of your displacement
A 68 kg person sits on a 4.0 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.2 cm in diameter . Find the pressure exerted on the floor by each leg of the chair, assume the weight is evenly distributed.
A person swimming 0.80 m below the surface of the water in a swimming pool looks at the diving board that is directly overhead, What is the actual height of the diving board
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