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An object is placed in front of a converging lens in such a position that the lens (f = 13.1 cm) produces a real image located 22.0 cm from the lens. Then, with the object remaining in place, the lens is replaced with another converging lens (f = 17.6 cm). A new, real image is formed. What is the image distance of this new image?
What is the terminal speed at which the bar falls? Imagine the bar remains horizontal and in contact with the rods at all times.
What greatest height above the break free point does it rise? How high is the break free point above ground.
A bar AB of negligible mass and length 2 m balanced at its midpoint a 4 kg and 5 kg masses are suspended from both ends. A 4 kg mass is 0.4m away from the midpoint. At what point the mass of 5 kg is suspended to a bar keep the balance.
Two moles of an ideal gas undergo a reversible isothermal expansion from 3.25×10-2 to 4.59×10-2 at a temperature of 21.7. what change of entrophy delta s of the gas.
A satellite moves around the earth in a circular orbit at a constant speed of 5000m/s. find the radius of the orbit
If a compressive force of 3.2×104N is exerted on the end of a 18cm long bone of cross-sectional area 4.3cm2 , will the bone break, By how much does it shorten
John is sitting ( at rest) at the top of a slide that is inclined 25 deg with respect to the horizontal. how much does the thermal energy increase during John's trip down the slide
An RL series circuit has R = 80.0? and L = 1.95mH . The series combination is connected across a 165V (rms), 63Hz power supply. Find the peak current
A golfer tees off on level ground, giving the ball an initial speed of 38.5 m/s and an initial direction of 36.0° above the horizontal. (a) How far from the golfer does the ball land? (Neglect air resistance.)
A small rock with mass 0.200 kg is fastened to a massless string with length 0.750 m to form a pendulum. What is tension in the string at the lowest point
A pendulum of length 50cm is pulled 30 cm away from vertical axis and free from rest. What would be its speed at the bottom of its swing.
An 18-year-old runner can complete a 10.0 km course with an average speed of 4.38 m/s. A 50-year-old runner can cover the same distance with an average speed of 3.88 m/s. How much later (in seconds) should the younger runner start in order to fini..
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