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The binding energy of an electron in a crystal lattice is 1.2 x10^(-4) eV. Use the uncertainty relation to estimate the size of the spread of the electron wave function.
A 4.95-kg ball, moving to the right at a velocity of +1.60 m/s on a frictionless table, Find the final velocities of the balls if the collision meet the following conditions
Most of the motion generated by joints in the human body are examples of levers. An example of a third class lever is the forearm; the force which generates the motion is located in between the pivot point and the resistance force.
Oasis B is located 25 km east from oasis A. A camel starts from oasis A and travels 19.6 km in the direction 14.7 degrees south of east. Then it walks 8 km directly to the north. How far is the camel from oasis B?
Two 11cm diameter electrodes 0.50cm apart form a parallel-plate capacitor. The electrodes are attached by metal wires to the terminals of a 15V battery. After a long time, the capacitor is disconnected from the battery but is not discharged.
Four ideal linear sheet polarizers are stacked one behind the other with the transmission axes of the first vertical, the second at 30°, the third at 60°, What fraction of the incident unpolarized light emerges
An athlete executing a long jump leaves the ground at a 35.0? angle and travels 7.90m, If this speed were increased by just 5.0%, how much longer would the jump be
A 168N sign is supported from its top surface by two ropes that each make a 22.5o angle with the horizontal. The sign is not moving. How much force is in each rope
A beam of unpolarized light in air is incident at an angle of 59.0? (with respect to the normal) on a plane glass surface. What is the angle of refraction of the transmitted beam
The mass of a certain planet is 6.93×1023 kg, and its radius is 1111 km. What is the acceleration due to gravity on the planet's surface
1.) Hold the baseball and sheet of paper side by side. Predict which one will travel with the faster motion when released. Then drop them both at the same time. Did your prediction match the results?
In a material having an index of refraction n , a light ray has frequency f, wavelength ?, and speed v. What is the frequency of this light in vacuum and in a material having refractive index n1
An electron is located on a pinpoint having a diameter of 1.90 µm. What is the minimum uncertainty in the speed of the electron
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