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A microscope with an 6.5-mm-focal-length objective has a tube length of 14.0cm.
For the microscope to be in focus, how far should the objective lens be from the specimen?
An aluminum wire carrying a current of 4.0 A has a cross-sectional area of 9.0 10-6 m2. Find the drift speed of the electrons in the wire
How many 104 W lightbulbs can you use in a 102 V circuit without tripping a 17 A circuit breaker? (The bulbs are connected in parallel that means that the potential difference across each lightbulb is 102 V.)
A projectile is fired at an upward angle of 50° from the top of a 145m cliff with a speed of 195 m/s. What will be its speed while it strikes the ground below? (Use conservation of energy.)
Find out vertical and horizontal components
A 360 kg piano slides 2.5 m down a 28 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline
A 120 V potential difference is applied to a space heater whose resistance is 22.6 ohms when hot, How much thermal energy is produced in 8.8 hours
A 120cm3 box contains helium at a pressure of 2.20atm and a temperature of 80.0â??C. What is the initial thermal energy of each gas?
Suppose a Proton is accelerated through a potential difference of 10 Gigavolts. Determine the proton's final kinetic energy
air is contained in a piston/cylinder at 350K, 300kPa and occupies 0.1m^3. determine the change of availability of the system
A 7.80-g bullet moving at 560 m/s penetrates a tree trunk to a depth of 5.2 cm. Use work and energy considerations to find the average frictional force that stops the bullet
The famous horse & cart physics scenario is explained. This scenario is used to describe why many people have a common misconception about what Newton’s 3rd Law says & does not say.
The engine of a large ship does 2.10 ? 108 J of work with an efficiency of 4.00%. How much waste heat is produced
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