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A converging lens (f = 24.6 cm) is used to project an image of an object onto a screen. The object and the screen are 144 cm apart, and between them the lens can be placed at either of two locations. Find the two object distances, the smaller being the answer to part (a).
A meteoroid is speeding through the atmosphere, traveling east at 21.5 km/s while descending at 19.0 km/s. What is its speed, in km/s.
A spherical conductor with radius 2.00 cm is centered on the origin and holds charge q1=-250 nC, Find the surface charge density a(charge per area) on the outside surface of the outer spherical shell
In a photoelectric effect experiment, visible radiation is incident upon a metal of work function 1.05 eV. What is the wavelength of the incident radiation
It was revealed that 120 people had only 1 admission, 81 had 2 admissions, 48 had 3 admissions, 18 had 4 admissions, 18 had 5 admissions, and 15 had 6 admissions or more admissions. Does the data support the mayor's claim? Show the calculations or..
What is the velocity of each ball. while both pipes vibrate at their fundamental frequencies, a beat frequency of 15 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 343 m/s.
What is the magnitude of the contact force on the student by the backpack.
A 16 cm-diameter compressed-air tank is 70cm tall. The pressure at 30 degrees C is 130 atm. What is the number of moles in the tank
What is the total negative charge, in coulombs, of all the electrons in a small 1.05g sphere of carbon? One mole of C is 12.0g, and each atom contains 6 protons and 6 electrons.
A baseball pitcher throws a fastball at a speed of 45.00m/s. The acceleration occurs as the pitcher holds the ball in his hand and moves it throughout an almost straight-line distance of 4.0 m. compute the acceleration; assume that it is constant ..
What is the partial pressure of oxygen in humidified air (RH= 100%) at body temp, if the barometric pressure is 750 torr
A magnetic field near the ceiling points up and is decreasing. Looking up at the ceiling, does non-Coulomb electric field curl clockwise or counter-clockwise.
A propeller is modeled as five identical uniform rods extending radially from its axis. what is its rotational kinetic energy
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