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An engraver utilizes a magnifying glass (f = 9.30 cm) to examine some work, as in the drawing. The image he sees is located24.0 cm from his eye, which is his near point.
a) What is the distance among the work and the magnifying glass?
b) What is the angular magnification of the magnifying glass?
The current density in a 3 μm thick × 75μm wide gold long film is 750,000 A/m2. The current flows along the length of the film. Estimate what is the current in the gold film
A hollow sphere has a mass of M = 8.00 kg and a radius of R = 60.0 cm. Determine the sphere's rotational inertia about an axis that is tangent to the OUTER surface of the sphere
The velocity of a diver just before hitting the water is -11.9 m/s, where the minus sign indicates that him motion is directly downward. Find him displacement during the last 1.12 s of the dive
A 150 g ball and a 220 g ball are connected by a 36{rm cm}-long, mass less, rigid rod. The balls rotate about their center of mass at 130 rpm. What is the speed of the 150 g ball.
Two identical violin strings, when in tune and stretched withthe same tension, What is the highest possible fundamental frequency of the retuned string
Consider a model of a hydrogen atom in which an electron is in a circular orbit of radius = 5.79×10?11 around a stationary proton. What is the speed of the electron in its orbit?
Based on this information and what you learned in this chapter about the action potential, estimate the total number of sodium ion channels in the membrane of a nerve cell
Two cars with equal mass collide head on. One car is going 18 mph. That car is push backward about 38 feet. What is the speed of other vehicle.
A tungsten target is struck by electrons that have been accelerated from rest through a 20.0-kV potential difference
A 1200 kg airplane is flying in a straight line at 80 m/s, 1.3 km above the ground. What is the magnitude of its angular momentum with respect to a point on the ground directly under the path of the plane?
A proton of mass (m) moving with a speed of 3.0x 10^6 m/s undergoes a head-on elastic collision with an alpha particle of mass (4m), What are the velocities of the two particles after the collision
Two lenses, one converging with a focal length of 20.0cm and one diverging with a focal length of -12.0cm, Find the final image from the second lens. Follow the sign conventions
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