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After landing, a jetliner on a straight runway taxis to a stop at an average velocity of -30.0km/h. If the plane takes 7.50s to come to rest, what are the plane's initial velocity and acceleration?
A model rocket engine has an average thrust of 5.26 N. It has an initial mass of 24.9 g, which includes fuel mass of 12.2 g. What is the average exhaust speed of the engine
A charge of -6 nC is at the origin and a second charge of 11.0 nC is at x = 5.0m. Find the magnitude and direction of an electric field halfway in between the two charges.
A concave mirror has a focal length of 16 cm. The mirror forms an image located 36 cm in front of the mirror. What is the magnification of the mirror
A 1.56m tall student stands before a vertical mirror. She can just see her whole body, from head to toe. How tall is the mirror
If the coefficient of static friction is 0.500, what minimum force magnitude is required from the rope to start the crate moving
A 4.4kg ball with a velocity of 5.0m/s in the+x-direction collides head-on elastically with a stationary 2.5kg ball. What is the speed of the second ball after the collision
An electron is accelerated from rest by a potential difference of 440 V. Calculate the radius of its path in the magnetic field
A uniform thin disk (I=1/3ML^2) of length L and mass M is pivoted at one end. It is held horizontal and released. Find the angular acceleration of the stick immeidately after it is released
You have a wire of length L = 1.9 m for making a square coil of a dc motor. Find the maximum torque exerted on the coil
A light ray travels through medium #1 and crosses a boundary into water at an indicent angle of 21.8 degrees. what is the energy of one photon of this light
calculate the emission temperature of the earth, if the planetary albedo is changed to that of ocean areas without clouds, about 10%
As a spacecraft approaches a planet, the rocket engines on it are fired (turned on) to slow it down so it will go into orbit around the planet. how long (in minutes) must the engines be fired
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