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A diverging lens (f = -11 cm) is located 20.0 cm to the left of a converging lens (f = 34.0 cm). A 3.00 cm tall object stands to the left of the diverging lens, exactly at its focal point. (a) Dete
A) What is the direction of the electric field at P due to the charge +Q on the top half of the rod?
Where should the parent push if the mass of the teeter totter were doubled?
(a) How far (in meters) from the lens must the screen be located if a slide is placed 108.85 mm from the lens? (b) If the slide measures 24.0 mm 36.0 mm, what are the dimensions (in mm) of its image?
The electromagnet of a bell is constructed by winding copper wire around a cylindrical core, like thread on a spool. The diameter of the copper wire is 0.45mm, the number of turns in the winding is
A circular coil lays flat on a horizontal table in a region where the magnetic field is straight down. The magnetic field is suddenly removed. When viewed from above, what is the direction of the cu
A loudspeaker is placed between 2 observers who are 110 meters apart along a line connecting them. if one observer records a sound level of 60 dB and the other records a sound level of 80 dB, how fa
Calculate the total work done in one cycle in each cylinder of the engine, and the heat released when the gas is cooled to the temperature of the outside air.
Calculate the volume and the temperature of the gas at the higher altitude.
The indices of refraction for the blue and red components of the ray are: blue (ndiamond = 2.444, ncrown glass = 1.531), and red (ndiamond = 2.410, ncrown glass = 1.520). Determine the angle between
Given that the charge on the electron is 1.6 x 10^-19, about how many excess electrons must be on the drop to allow it to be suspended?
If the box is being lifted at a constant speed of 2.0 m/s, what is the power delivered by the person pulling on the rope?
A). Calculate the final temperature of the water once the ice has melted. B). Calculate the change in entropy of the system.
When the temperature of a "copper" penny (which is not really copper) is raised by 100 C, its diameter increases by 0.18%. a). What is the coefficient of linear expansion?
A 3.0 kg particle starts from rest at x = 0 and moves under the influence of a single force Fx = 6 + 4x - 3x2, where Fx is in newtons and x is in meters. (a) Find the work done by the force as the par
A machine has an 760 g steel shuttle that is pulled along a square steel rail by an elastic cord . The shuttle is released when the elastic cord has 25.0N tension at a 45 degree angle.
You run a race with your friend. At first you each have the same kinetic energy, but then you find that she is beating you. When you increase your speed by 29%, you are running at the same speed she
At a distance r from a point charge, the electric potential is 1400 V and the magnitude of the electric field is 1.0×10^5 V/m. A) What is the electric potential at distance r/2 from the charge?
The flash unit in a camera uses a special circuit to "step up" the 3.0 V from the batteries to 340 V, which charges a capacitor The capacitor is then discharged through a flashlamp. The discharge ta
An electron that has a velocity with x component 2.8 x 106 m/s and y component 3.4 x 106 m/s moves through a uniform magnetic field with x component 0.029 T and y component -0.22 T. (a) Find the mag
In an RC series circuit, e = 12.0 V, R = 1.81 MO, and C = 2.59 µF. (a) Calculate the time constant. (b) Find the maximum charge in microcoulombs that will appear on the capacitor during chargi
A -10.0 nC point charge and a +20.0 nC point charge are 14.7 cm apart on the x-axis. A) What is the electric potential at the point on the x-axis where the electric field is zero?
A piece of aluminum foil of mass 2.6 x 10-2 kg is suspended by a string in an electric field directed vertically upward. If the charge on the foil is 4.5 µC, find the strength of the field tha
A) What is the speed of the alpha particle when the particles are 1.4 nm apart? B) What is the speed of the antiproton when the particles are 1.4 nm apart?
The string will break if its tension exceeds 50.0 . The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed. Find the maximum speed the ston