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You pull a simple pendulum of length 0.240m to the side through an angle of 3.50degree and release it. a.) how much time does it take the pendulum bob to reach its highest speed? b.) how much time does it take if the pendulum is released at an angle of 1.75 degree instead of 3.50 degree?
A 9.9 cm long spring (k = 900 N/m) is compressed by 2.4 cm. What is the potential energy due to the spring in Joules
A stone of mass 0.31 kg is tied to a string of length 0.85 m and is swung in the horizontal circle with speed v. The string has a breaking-point force of 90 N. What is the largest value v can have without string breaking.
the red color of hemoglobin is a consequence of the strong absorption by this protein of yellow and green light in the
A hall sensor made from silicon is 0.40 nm thick and has a charge carrier density of 2.0 x 10 ^19 m^-3. What is the value of the magnetic field
a bat flying straight toward a wall at 11ms emits a pulse at 60khz. what is the frequency of the reflected ultrasonic
A constant force of 25N acts on an object having a mass of 2kg for 3 seconds. What is the magnitude of the change in the object's momentum
A 4.20–kg block is set into motion up an inclined plane with an initial speed of vi = 7.40 m/s (see figure below). The block comes to rest after traveling d = 3.00 m along the plane, which is inclined at an angle of ? = 30.0° to the horizontal.
State the direction as an angle with respect to the +x axis.
Electrostatic interactions with neighbors cause atoms in solids to be held in place as if bound together by tiny springs. How do you arrive at that conclusion
question a spacecraft descends vertically near the surface of planet x. an upward thrust of 25.0 kn from its engines
A person with a black belt in karate has a fist that has a mass of 0.70 kg. What is the magnitude of the average net force
Two speakers on stands 10 m apart are aimed directly at each other. They are emitting a pure tone at 440 Hz. Alice stands at a point exactly between the two speakers;
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