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Recalling that an object smaller than the wavelength illuminating it cannot be "seen", what is the minimum kinetic energy of electrons needed in an electron microscope in order to "see" an atoms whose diameter is 0.1 nm, about the size of a silicon atom?
An antitank weapon fires a 4kg rocket which acquires a speed of 50.0 m/s after travelling 90 cm down a launching tube. Assume the rocket was accelerated uniformly, what is the average force acted on it.
A solid sphere of mass 6.0 kg is mounted on a vertical axis and can rotate freely without friction, What is the speed of the block after it has fallen 80 cm
A thermometer containing 0.10 g of mercury is cooled from 14.0° C to 8.1° C. How much energy was lost by the mercury in this process
a segment of wire supplying current to a motor of a submerged submarine carries 800A and feels a 3.6N repulsive force from a parallel wire 5cm away
An object moves with constant acceleration 4.20 m/s^2 and over a time interval reaches a final velocity of 11.8 m/s. calculate the distance it travels during this interval
Describe a solar cell. In your description, include the description, the efficiency of the cell and what the cell produces. Describe solar thermal energy
When a 9.0 V battery is connected to a capacitor, it puts 8.00e-4 C of charge on the capacitor. What is the unknown battery's voltage
A golf ball is hit on a 7.2m tall hill at 23m/s and 30° above the horizontal, what is its velocity at the peak of its flight
Suppose the highway is icy and the coefficient of friction between the tires and pavement is only one-third what you find in part (a). Illustrate what should be the maximum speed of the car so it can round the curve safely?
A building has two open doors facing the bay. The walls of the building absorb sound well, so multiple reflections can be ignored. find the distance d between the door centers
Two blocks connected by a massless rope are placed on an inclined plane as pictured on the right. What is the relationship between the two masses in order for the system to not move
A proton in the upper atmosphere moves at 9.8×105m/s , perpendicular to Earth's magnetic field, Find the curvature radius of the proton's trajectory
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