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Sea birds tuck in their wings and dive straight down into the water when hunting for fish near the surface.
A) If a pelican starts a dive from 16.0 m, with what speed will it strike the water?
B) How long will it take for it to hit the water?
A tennis player receives a shot with the ball ( 0.0600kg) traveling horizontally at 50.0 m/s, what is the impulse delivered to the ball by the racket
A bullet of mass 10g and speed 500 m/s is fiered into a door and gets embeded exactly at the centre of the door, Calculate the angular speed of the door just after the bullet embeds into it
A 850-kg sports car accelerates from rest to 95 km/h in 7.0s, What is the average power delivered by the engine
On a cool morning, while the temperature is 12.0 deg Celsius, you measure the pressure in your car tires to be 20psi. After driving 40.0 mi on the freeway, the temperature of your tires is 56deg Celsius. What pressure will your tire gauge now show..
A 1000 kg race car makes three and half laps around a circular race track with a 400m radius in 180 sec at a constant speed. determine the car's linear speed
how to calculate the average velocity between to minutes. Estimate how for you can throw a ball if you throw it in the following situations.
At a distance rl from point charge the magnitude of the electric field created by charge is 248 N/C. After a distance r2 from the charge, field has a magnitude of 132N/C. Find ration r2/r1.
Find the angle with respect to the ground
A long straight wire suspended in the air carries a conventional current of 8.2 amperes in the ?x direction, What is the (vector) magnetic field due to the wire at the location of the electron
A person holds a ladder horizontally at its center. Treating ladder as a uniform rod of length 3.30 m and mass 7.43 kg, find out the torque the person must exert on the ladder to give it an angular acceleration of 0.405 rad/s2.
A particular guitar string is supposed to vibrate at 203 Hz, other than it is measured to actually vibrate at 208 Hz. By what percentage must the tension in the string be changed to get the frequency to the correct value.
You combine two thin lenses by placing them in contact so that their axes coincide, Find the focal length of this compound lens
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