Determine the focal-length lens
A nature photographer wants to photograph a 30 meter tall tree from a distance of 60 meters.
Determine the focal-length lens which must be used when the image is to fill the 36mm height of the film?
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Find screen area of 26-inch High Definition TV? Determine the screen area of 52-inch High Definition TV? Compute difference in their areas?
Determine the maximum distance from the surface of earth which does it travel before falling back to Earth? (The mass of Earth is 5.98 x 1024 kg, and the radius of the Earth is 6.38 x 103 km.)
The resistor of 30Ω, 60Ω and 80Ω are joined in parallel closed circuits having a 160 volts source {suppose an ideal circuit} Find out the current via the circuit.
Determine the work done during an isothermal reversible expansion of a van der Waals gas. Account physically for the way in which the coefficients a and b appear in the final expression.
When the force of air resistance consists of a magnitude of 3.77E+4 N, determine the speed of the airplane after it has traveled 425 m. Suppose that the airplane is in the level flight all through this motion.
A certain light truck can go around the flat curve with a radius of 150 m having a maximum speed of 29.0 m/s. Determine with what utmost speed can it go around a curve with a radius of 85.0 m?
State the formula to relate Jon's distance from restaurant in terms of the number of minute which have elapsed since 7:30 pm.
A race car begins from rest on a circular track of radius 449 m. The speed of car rises at the constant rate of 0.320 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equivalent, determine the following.
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