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A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 56.03 diopters, and the lens-to-retina distance is 1.827 cm.
(a) How far is the blackboard from her eyes?
(b) If the writing on the blackboard is 7.16 cm high, what is the height of the image on her retina?
Are there transitions of higher or lower energy that are not seen? How many total transitions are there for hydrogen
The left face of a bioconvex lens has a radius of curvature of 10.3 cm, and the right face has a radius of curvature of 15 cm. Calculate the focal length of the lens
A person pushes a 12.3-kg shopping cart at a constant velocity for a distance of 16.5 m on a flat horizontal surface. What is the magnitude of the force that the shopper exerts
A car accelerates from rest to a speed of 19.0m/s in 6.00 seconds. If the car weighs 16000N, what average power must the motor produce to cause this acceleration
An elevator is able to raise 9,800 N to a height of 22 m in 14 s. How much work does the elevator do
While traveling along a level highway at a speed of 27m/s you shift the vehicle into neutral and find it takes 45 second to slow down to 20 m/s mile per hours.
Particles of charge Q1 = +69 µC, Q2 = +51 µC, and Q3 = -80 µC are placed in a line, Calculate the net force on each charge due to the other two
The membrane that surrounds a certain type of living cell has a surface area of 5.00 10-9 m2 and a thickness of 1 10-8 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 5.
A 1-m long pendulum with a mass of 5 kg moves at a velocity of 3 m/s at the bottom of its swing. What is the tension in the string at this point
Sphere 1 with radius R1 has positive charge q. Sphere 2 with radius 8.0R1 is far from sphere 1 and initially uncharged. what fraction of qends up on sphere 1
A person's center of mass is easily found by having the person lie on a reaction board. find the distance from the woman's feet to her center of mass
A box of mass 15 kg slides at a constant velocity, along a flat surface, with a coefficient of kinectic friction of 0.75. how much work is done is done by the normal force
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