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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 air-hockey pucks floats across the table and bumps into a second puck, initially at rest. The first puck - mass 0.0250 kg - is moving initially due east at 5.50 m/s. Find the speeds of both pucks after the bump
A solenoid 10.0 cm in diameter and 69.9 cm long is made from copper wire of diameter 0.100 cm, with very thin insulation. What power must be delivered to the solenoid
A 0.05 kg bullet traveling at 600 m/s hits a 7.4 kg block of wood and stays in the wood. What is the velocity (speed)of the wood block
A 1070-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam.
a glider of 500 gr. is 10 cm. above the table at the beginning of its motion and 6 cm. above the table at the end. what is the theoretical value of kinetic energy at the bottom
What was the average acceleration throughout the trip
You take the elevator to the roof of midtown skyscraper that is 100 meters high. What was the velocity of your souvenir just before it hit the ground
Suppose the region outside the chamber is evacuated and the total mass of the block and the movable piston is150 kg. What is the distance s through which the piston rises
What must the charge (sign and magnitude) of a 1.49-g particle be for it to remain stationary when placed in a downward-directed electric field of magnitude 660N/C?
Ray of light leaves point A and reflects from mirror and travels to point B. Point B is level with bottom of mirror and distance between the two is 30 cm, How far from bottom does the light ray hit the mirror
The magnetic field between the poles of an electromagnet is 2.17 T. A coil of wire is placed in this region so that the field is parallel to the axis of the coil. How many turns are there in the coil
A particle travels 19 times around a 10-cm radius circle in 36 seconds. What is the average speed (in m/s) of the particle
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