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Using the concept of acceleration, explain how a swimmer can have a better time for a 100-m race in a 25-m pool than in a 100-m pool.
Define work and energy. State the law known as the work-energy theorem, What are elastic and inelastic collisions
A 75.0 weight watcher wishes to climb a mountain to work off the equal of a larger piece of chocolate cake rated 500 (food) calories. Determine how high must the person climb
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, thirteen years have elapsed on earth, and 6.5 years have elapsed on board the ship. How far away (in meters) is the planet, according t..
A two-slit apparatus is covered with a red (643 nm) filter. When white light is shone on the filter, on the screen beyond the two-slit apparatus, how wide will that diffraction maximum be
A standing wave interference pattern is set up by radio waves among two metal sheets 3.80 ma part. That is the shortest distance among the plates that will produce a standing wave pattern. What is the fundamental frequency?
The ultrasonic transducer used in medical ultrasoundimaging, is a very thin disk ( m =0.10g) driven back, What is the disk's maximum speed at this amplitude
A projectile is launched at some angle to the horizontal with some initial speed vi, and air resistance is negligible. What is its acceleration in the horizontal direction
A beam of red light (λ=700nm) is incident at 60 degrees onto a layer of material with index of refraction n=2.3. The beam continues and strikes another material (n=1.5) as shown. Find the angles θ1, θ2, and θ3. Also, find the wavelength of the lig..
If a simple pendulum with length 1.3 m makes 88oscillations in 180 s, what is the acceleration of gravity at its location
Each of the three helicopter rotor blades shown in Fig. 10-67 is 5.20 m long and has a mass of 195 kg. The rotor is rotating at 228 rev/min. What is the total kinetic energy of rotation
Two blocks, A and B (with mass 50 kg and 100 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is µk =..
Temperatures of gases inside the combustion chamber of a four stroke automobile engine can reach up to 1000°C. what flow rate would need to be supplied by the water pump
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