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An object is placed 100 cm in front of a lens of focal length 20 cm. A second lens is placed 35 cm beyond the first, this second lens having a focal length of 8.0 cm. How far past the second lens is the final image formed?
If a container has a water level 20 cm above the base and you punch a hole in the side 12 cm high
Find the work done by an ideal engine which extracts 11500.0 J of heat from its hot reservoir while operating between 530.0 K and 310.0 K
The hot resistance of a flashlight bulb is 2.20 , and it is run by a 1.53 V alkaline cell having a 0.100 internal resistance. Calculate the power supplied to the bulb using I2Rbulb
With each cycle, a 2550-W engine extracts 2180 J from a thermal reservoir at 87.7°C and expels 1570 J into a thermal reservoir at 21.7°C. What is the work done for each cycle
A small space telescope at the end of a tether line of length L moves at linear speed v about a central space station. What will be the linear speed of the telescope
Two forces parallel to the x axis do 16.8 J of work on a small tray while moving it 17.5 m in the x direction across a gym floor. What is the other force
A solid disk rotates in the horizontal plane at an angular velocity of 0.049 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
a) What is the total charge of the neptunium nucleus (The neutral neptunium atom has 93 electrons.) = 1.49×10-17 C b) What is the magnitude of its electric field at a distance of 5.29×10-10 m from the nucleus
An iron cube with a volume of 8.00cm^3 is submerged in ethyl alcohol, which has a density of 0.806g/cm^3. What is the volume of ethyl alcohol displaced
A 17 kg girl slides down a playground slide that is 3.1 m high. When she reaches the bottom of the slide, her speed is 1.3 m/s. what is the coefficient of friction between the girl and the slide
If the air pressure at a particular place in the mountains is 0.75 atm estimate the temperature at which water boils
A lump of mass 1.0 kg falls on it and sticks to the surface at a distance 0.7 m from the center. a) calculate the new angular speed of the disc b) if the lump gets unstuck and rolls of the disc.
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