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A certain digital camera having a lens with focal length 7.5 cm focuses on an object 1.80m tall that is 4.35m fromt he lens.
A) How far must the lens be from the photocells?
B) Is the image on the photocells erect or inverted? Real or virtual?
C) How tall is the image on the photocells?
A 1.6-rm MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward sound receiver as the heart beats.
A uniform 3.0-m plank weighing 150 N is suspended by vertical ropes at either end. determine the tension in the rope holding the left end of the plank
A 1000 kg roller coaster car starts from rest from a hilltop 60.0 m above the ground and moves (without power) down, what is the average frictional force between the car's wheels and the track
A 70·kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 37.0° above the horizontal. What is the total work done on the box by all forces
A point source of light is located at the bottom of a steel tank, and an opaque circular card of radius 5.7 cm is placed over it. What is the index of refraction of the fluid
A large parallel plate capacitor has plate separation of 1.01 cm and plate area of 231 cm2. How much work is done on the capacitor as the plate separation is increased to 2.02 cm
Two ocean liners, each with a mass of 40,000 metric tons, are moving on parallel courses, 92 m apart. What is the magnitude of the acceleration of one of the liners toward the other due to their mutual gravitational attraction? Care for the ships as ..
What is magnitude of the speed of the boat
When a 50.0-V emf device is placed across two resistors in series, a current of 12.0 A is flowing in each of the resistors. What is the magnitude of the larger of the two resistances
Given the angular speed omega, find out the radius R(omega) at which the mass rotates without moving toward or away from the origin. Determine the radius in terms of k, L, M, and omega.
An objects average density, p, is defined as the ration of its mass to its volume: p = M/V. The Earth's mass is 5.94x10^24 kg and its volume is 1.08x10^12 km^3
This parallel group is connected in series with a 22.0 Ω resistor. The total combination is connected across a 18.0 V battery. Compute the current delivered to the 130 Ω resistor.
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