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The height of a tower is measured with attaching a simple pendulum to its ceiling, whose length is barely enough to stay off the floor. The pendulum is let go from a small angle, and takes12 s to return to the similar location it started from. The tower is 35.75 m tall = L. If the pendulum mass is let go 0.3 m above the floor,
How fast is the mass travelling as it grazes the floor? ______m/s
A ray of light, traveling in the air, strikes the surface of mineral oil at an angle of 27.9 degrees with the normal to the surface. What is the angle of refraction
A grinding wheel of radius 0.280 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. Find the magnitude of the friction force
You have a 240- resistor and a 0.420-H inductor. Suppose you take the resistor and inductor and make a series circuit with a voltage source that has a voltage amplitude of 33.0 V, What is the voltage amplitude across the resistor
at some instant the velocity components of an electron moving between two charged parallel plates are vx1.5x105ms and
inside an insulated container a 250-g ice cube at 0 degc is added to 200 g of water at 18 degc.i what is the final
A spring loaded toy is used to shoot a 3g ping pong ball straight up against air. What is the work done by air resistance
What is acceleration due to gravity
Express the time in terms of given quantities. T catch = ? How far from Car B's starting line will the cars be when Car B passes Car A? Express your answer in terms of known quantities.
A railroad engine weighs three times as much as a freight car. If the engine coasts at 9 km per hour into a freight car that is initially at rest
A thin film of alcohol (n=1.36) lies on a flat glass plate (n=1.51). When monochromatic light is incident normally on the system, What is the thickness of the film
A 70 turn coil of radius 4.6 cm rotates in a uniform magnetic field having a magnitude of 0.45 T. find the magnitude of the maximum torque exerted on the coil
If both of them are simultaneously plucked at the center, illustrate what is the frequency of the beats that they will produce when vibrating in their fundamental?
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