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A slide projector needs to create a 98.0cm -high image of a 2.20cm cm -tall slide. The screen is 304cm cm from the slide.
1) What focal length does the lens need? Assume that it is a thin lens.
2) How far should you place the lens from the slide?
What is the half-life in days of a radioactive sample with 5.2×1015 atoms and an activity of 5.1×108Bq ? What is the half life in days
A cyclist rides a bike at 12.0 miles/hour. The diameter of the wheels is 70.0cm. (a) Through how many turns do the wheels spin for the 12.0mile trip, what is the bikes angular acceleration
Batteries are rated in terms of ampere-hours (A h). For example, a battery that can produce the current of 3.00 A for 5.00 h is rated at 15.00 A h. What is the total energy stored in an 8.0-V battery rated at 49.0 A h.
A uniform electric field points midway between the positive x and y axies. Its strength is 100Volts/m. A -50nC charge is placed at the position ( 2m, 3m ) and fixed in place. What are the components of the total electric field at the location (..
If Wave B's amplitude is instead -13.4 mm, what is the amplitude of the wave pulse formed while they are interfering
While john is travelling along an interstate highway, he notices a 160 mile marker as he passes through town. Later John passes another mile marker, 119.
Seven-and-a-half seconds later the astronaut comes into contact with the shuttle. Elucidate what was the initial distance from the shuttle to the astronaut
A electron is accelerated from rest by the potential difference of 350 V. It then enters a uniform magnetic field of magnitude 200 mT with its velocity perpendicular to the field.
a super-particle travels forward along a straight cylindrical tube at 1000 m/s for 10 m, What is the average velocity
The bellow of a territorial bull hippopotamus has been measured at 110 dB above the threshold of hearing
How much current flows throughout the television.
50 g of gasoline are mixed with 38 g of water. What is the average density of the mixture
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