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Q1. A child is sliding on a sled at 1.6 {rm m/s} to the right. You stop the sled by pushing on it for 0.80 {rm s} in a direction opposite to its motion. If the mass of the child and sled is 41 {rm kg}, what average force do you need to apply to stop the sled? Utilize the concepts of impulse and momentum.
Q2. The normal lens on a 35- camera has a focal length of 50.0. Its aperture diameter varies from a maximum of 50 () to a minimum of 2.0 ().
Determine the resolution limit set by diffraction for and. state as the number of lines per millimeter resolved on the film.
What fraction of incident intensity is transmitted by system
A harmonic wave travels in a wire with amplitude 6.05 mm, wavelength 0.451 m, and frequency 462 Hz. What is speed with which the wave travels.
Problem on a hare and a tortoise battle
Standing at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching police car. After the police car passes, observed frequency of the siren is 455 Hz. Establish the car's speeds from these observations.
What is corresponding free energy change
Compute the density of entropically raised element of air
Find the force exerted by the plane on the pilot
Illustrate the cause of the components accelerating from rest down the conveyor.
If a metal wire carries a current of 23.0 mA, how long does it take for 12.0×1020 electrons to pass a given cross-sectional area anywhere along the wire? The magnitude of the charge on an electron is 1.6 × 10-19 C.
Find out an effective coefficient of kinetic friction
What is the speed of the center of mass
What are the total displacement and angle of displacement
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