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A 2 kg mass is placed at rest against a spring of spring constant 5 N/m, which is compressed by 10 cm from its equilibrium position.
a) what is the amount of potential energy stored in the spring?
b) The system is released and the mass is launced horizontally. What is the speed of the mass when it leaves the spring?
A falling stone takes ?t = 0.26s to travel past a window2.2 m tall, From what height above the top of the window did the stone fall
A dolphin located in sea water at a temperature of 25°C emits a sound directed toward the bottom of the ocean 100 m below
A syringe has an area of 1.5 cm2 at its barrel and then narrows down to an area of 0.11 mm2 at the needle end. what is the force produced at the tip of the needle
What is the energy stored in the inductor after the switch has been closed for a very long time? Take V = 15 V, R = 1400 ? and L = 20 mH
The position of an object connected to a spring varies with time according to the expression x = (4.4 cm) sin(6.9?t). (a) Find the period of this motion. s (b) Find the frequency of the motion. Hz (c) Find the amplitude of the motion. cm (d) Find ..
A uniform door weighs 50-N and is 1.0 m wide and 2.70m high. What is the magnitude of the torque because of the door's own weight about a horizontal axis perpendicular to the door and passing through a corner.
The floor received most of the collision energy and the force of the ball on the floor is upwards.
A monochromatic light i incident on a single slit of width of 0.1 mm, and a diffraction pattern is formed at a screen which is 0.7 m away from the slit. The second order bright fringe is at a distance 2 mm from the center of the central maximum.
A series AC circuit contains a resistor, an inductor of 230 mH, a capacitor of 4.30 µF, and a source with ?Vmax = 240 V operating at 50.0 Hz. obtain the phase angle between the current and the source voltage
A ball is shot from the top of a building with an initial velocity of 20 m/s at an angle ? = 44° above the horizontal. If a nearby building is the same height and 55 m away, how far below the top of the building will the ball strike the nearby build..
A heavy piece of hanging sculpture is suspended by a 90 cm-long, 5.0 g steel wire. When the wind blows hard, What is the mass of the sculpture
A parallel plate capacitor has a capacitance of 6.3 µF when filled with a dielectric. evaluate the dielectric constant of the dielectric
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