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If the image of the truck is approaching the vertex of the mirror at a speed of 1.5mn/s when the truck is 2.0 m away, what is the speed of the truck relative to the highway?
A second converging lens with the same focal length is placed 3.15 m to the right of the first. Find the position and size of the final image. Is the final image erect or inverted with respect to th
Find the total resistance of the rod and the current in the rod. Find the electric-field magnitude E(x) in the rod as a function of x.
An electron with a speed of 5.00 x 108cm/s enters an electric field of magnitude 1.00 x 103N/C, traveling along a field line in the direction that retards its motion.
The propeller provides the propulsion force F winch gives the tugboat forward motion, whereas the barge moves freely. Also, determine F acting on the tugboat. The barge has a mass of 75 mg.
In the absence of the lens, an image of a distant object (formed by refraction at the cornea) falls 2.53 cm behind the retina. The lens is designed to put the image of the distant object on the reti
A chain of mass m forming a circle of radius R is slipped on a smooth round cone with half-angle θ. Find the tension of the chain if it rotates with a constant angular velocity ω about
What boundary conditions must be satisfied by the resonant wavelengths? How does a crack in the bell, such as in the Liberty Bell, affect the satisfying of the boundary conditions and the sound eman
What's the eagle s speed just after grasping the rabbit? What percent of her kinetic energy is lost during the process? What would be the eagle s final speed if the rabbit were initially running towar
Argue for or against the idea that vd is equal to the instantaneous velocity of the glider when it is halfway through the photo gate in space.
You are now operating a Carnot engine at 40% efficiency, which exhausts heat into a heat sink at 298 K. If you want to increase the efficiency of the engine to 65%, to what temperature would you ha
Batteries are rated in terms of ampere-hours (A · h). For example, a battery that can produce a current of 2.00 A for 3.00 h is rated at 6.00 A · h. What is the total energy, in kilowa
In unit-vector notation, what is the torque about the torque about the origin on a particle located at coordinate (0, -4.0m 3.0m) if that torque is due to
The current in the windings of a toroidal solenoid is 2.400 A. There are 500 turns, and the mean radius is 25.00 cm. The toroidal solenoid is filled with a magnetic material. The magnetic field insi
Evaluate the thermal conductivity of the soda lime glass at 300 K. If the aircraft has 130 windows and the cost to heat the cabin air is $l/kW · h, compare the costs associated with the heat
Three odd-shaped blocks of chocolate have the following masses and center-of-mass coordinates: (I) 0.300 kg, (0.200 m, 0.300m); (2) 0.400 kg, (0.100m, -0.400m); (3) 0.200 kg, (-0.300 m, 0.600 m). F
A dipole of moment 0.5 e·nm is placed in a uniform electric field with a magnitude of 4.0 x 104 N/C. What is the magnitude of the torque on the dipole when
A converging lens forms an image of an 8.00-rnm-tall real object. The image is 12.0cm to the left of the lens, 3.40cm tall, and erect. What is the focal length of the lens? Where is the object loca
A battery-powered global positioning system (GPS) receiver operating on 9.0 V draws a current of 0.13 A. How much electrical energy does it consume during 1.5 h?
Estimate the emf induced between the top and bottom of a bullet shot horizontally at a target on the equator if the bullet is shot toward the east. Assume the bullet has a length of 1 cm and a diame
A ray of light moving along the vector (-i^-2j^) undergoes refraction at an interface of two media, which is the x-z plane. The refractive index for y>0 is 2 while for y<0 its [root(5)]/2. Th
Primary and secondary amines form hydrogen bonds among themselves. Assume you have a solution of ethanamine (ethylamine). Draw two molecules of ethanamine and show a hydrogen bond formed between th
(a) Suppose that a channel has a slope of m= .001 (or 1%) and a runoff rate of r= 340 cubic feet per second (cfs). Find k. (b) If the slope of the channel increases to m=.04 (or 4%), what happens to
An object moves with a constant acceleration of 4.0 m/s2. If it starts with an initial speed of 30 m/s, how long does it take to reach a velocity of 250 m/s?
A hockey puck moves on an icy surface that is frictionless, with a constant speed of 30 m/s. How long does it take the puck to travel the length of the hockey rink (60 m)?