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The lens of an endoscope is carefully matched such that the light ray from the edge of the lens enters the fiber at an angle. What focal length should the lens have
An object's moment of inertia is 1.8kgm2 . Its angular velocity is increasing at the rate of 3.3rad/s2, What is the torque on the object
When comparing the successive ionization energies of an element, an unusually big increase in ionization energy is seen when
Light of 650 nm is incident on two slits. A maximum is seen at an angle of 5.74° and a minimum of 6.46°. What is the order m of the maximum
Given the equation y=-5640.5+14.086. Using he slope calculate the activation energy of the reaction.
A solid spherical ball of mass 2.3 kg and radius 0.11 m rolls along a smooth, What is the ball's rotational kinetic energy
How many grams of lead may be formed by the passage of 65.5 amps for 1.07 hours through an electrolytic cell that contains an aqueous Pb(IV) salt.
A cube of iron, of side length 14cm, is heated from 10?C to 90?C; Calculate the total work done ON the cube and the change in internal energy of the cube
what is the common IUPAC name for a benzene ring with a single ammonia group (NH3) attached
Two converging lenses are placed 88.0 cm apart. An object is placed 1.100 m to the left of the first lens, What is the focal length of the second lens
what does the Fluid Mosaic Model say about the structure and composition of a cell's membrane. Why would water molecules or a metabolic compound like Acetyl-CoA, need a transport protein to move rap
How many grams of magnesium may be formed by the passage of 76.0 amps for 8.03 hours through an electrolytic cell that contains a molten magnesium salt.
Electrolysis of molten NaCl in a Downs cell is the major isolation step in the production of sodium metal. If 65.0 g of Na are obtained, how many amps are required to produce this in 7.50 hours
How do the isoelectric points in Part B compare with isoionic points from Part A? Explain similarities or differences that you observe in these values.
An astronaut travels at a speed of 0.93c from the Earth to a distant star that is 4.5e+17 m away. how old is she when she arrives at the star
A 4000 kg lunar lander is in orbit 50 km above the surface of the moon. How much work must the thrusters do
Hydrogen iodide decomposes according to the equation 2HI(g) H2(g) + I2(g), for which Kc = 0.0156 at 400ºC. 0.550 mol HI was injected into a 2.00 L reaction vessel at 400ºC. Calculate the c
A 17 ?F capacitor is charged to 20 V and is then connected across a 11 mH inductor. What is the frequency of oscillation of the circuit
Calculate the pH of 0.40 M KNO2. What is the concentration of HNO2 in the solution
A device used in radiation therapy for cancer contains 1.40 g of cobalt 2760Co (59.9333819 u). Determine the activity of the radioactive material
A wire, 24 m long, moves at 4.8 m/s perpendicularly through a 0.59 T magnetic field. What emf is induced in the wire
A wall is composed of two materials, material 1 has a thickness of 3.49 cm and a thermal conductivity of 0.1 J/msCo while material two has a thickness of 7.01 cm, what is the energy loss per second
In the formation of an acetal one mole of aldehyde requires which of the following? a. one mole of alchol b. two moles of alcohol c. one mole of alcohol and one mole of water d. two moles of water
An air-track glider attached to a spring oscillates between the 12.0cm mark and the 63.0cm mark on the track. What is the maximum speed of the glider
Which of the following correctly describes Tollens' reagent? a. a solution of silver nitrate in water b. a solution of silver nitrate and ammonia in water c. a solution of silver nitrate in hydrochl