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An object is in front of a converging lens with a focal length of 11.0 cm. The lens produces a real image located 25.0 cm from the lens. what is the image distance of the new lens
A circular disc of mass 10 kg is suspended by a wire attached to its centre. Determine the torsional spring constant of the wire
A spring (75N/m ) has an equilibrium length of 1.00 m. The spring is compressed to a length of 0.50 m, If the mass is attached to the spring, how far up the slope from the compressed point will the ma
I want to put a 1500 g satellite into orbit around a spherical asteroid with a mass of 3x10^13 kg and a density of 5000 kg/m^3. Since it has no atmosphere, What is the radius of the asteroid
A certain atom has an energy level 3.70eV above the ground state. When excited to this state, it remains 9.00%u03BCs , What is the wavelength of the photon
consider an atomic nucleus to be equivalent to a one-dimentional infinite potential well. what is the wavelength of the emitted light
A step-up transformer has 20 turns on the primary coil and 720 turns on the secondary coil. what input current and voltage are needed
A wagon is being pulled up a hill by a running child. Derive the work done by friction on the wagon
A loop of diameter d = 12 cm, carrying a current I = 0.4 A is placed inside a magnetic field B = (0.2 T) i^+ (0.4 T) j^. What is the potential energy of the loop
In changing the state of a gas adiabatically from an equilibrium state A to another equilibrium state B, how much is the net work done by the system in the latter case
A bicyclist is finishing his repair of a flat tire when a friend rides by at 3.8 m/s. How far has he traveled in this time
Randomly polarized light of intensity I0 is passed through two polarizers whose transmission axes differ by 45 degrees. What is the intensity of the light
plane polarized light of intensity I0 is passed through two polarizers, the first one at 45 degrees to the original plane of polarization, what intensity is transmitted
A computer can fetch information from the memory in 3.0 ns, a process that involves sending a signal from the Central Processing unit (CPU) to memory and awaiting return of the information. find th
A 81.0kN spaceship comes in for a vertical landing. From an initial speed of 1.00 km/s, it comes to rest in 2.10min with uniform acceleration. What braking force must its rockets provide
A 2.4mm -diameter sphere is charged to -4.5nC . An electron fired directly at the sphere from far away comes to within 0.32mm of the surface of the target before being reflected. What was the electr
Paper has a dielectric constant of K=3.7. Suppose that a typical sheet of paper has a thickness of .030 mm. Calculate the capacitance of this home-made capacitor
Dr. Winger stands on the drill field just north of President Lee's statue. He walks 20.0 m north on the sidewalk toward Lee Hall while thinking about going back to work. Determine how far Dr. Winger
A rail car that weighs 28 N is accelerated at 3.6 m/s/s for 2.2 seconds. How much work is done on the rail car
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.50 104 m/s, and the radius of the orbit is 5.45 106 m. What is the orbital speed of the second satellite
A 2.40 kg object rotates around along a horizontal circle of radius r=0.720m. Obtain the centripetal acceleration and centripetal force
A block of wood has a density of 0.55g/cm^3 and mass of 2,500 g. it floats in a container of oil (the oil%u2019s density is 0.85 g/cm^3). What volume of oil does the wood displace
a block of wood has specific gravity 0.79. When placed in water, what percent of the volume of the wood is under the surface. And what volume of the wood is above the surface
Two forces, F1 and F2 act at a point. F1 has a magnitude of 8.80N and is directed at an angle of 62 degrees above the negative X axis in the second quadrant. What is the magnitude of the resultant f
A loaded railroad car of mass 6000 kg is rolling to the right at 2.0 m/s when it collides and couples with an empty freight car of mass 3000 kg, What is the velocity of the pair after the collision