Determining the magnitude of the velocity
A plane has an airspeed of 142 m/s. A 16.0 m/s wind is blowing southward at the same time as the plane is flying. If the velocity of the plane relative to Earth is due east, what is the magnitude of that velocity?
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Two nanowires are separated by 1.2 nm as measured by STM. Inside the wires the potential energy is zero, but between the wires the potential energy is greater than the electron's energy by only 1.4 eV. Estimate the probability that the electron pa
A small car collides with a large truck. Is the magnitude of the force experienced by the car greater than, less than, or equal to the magnitude of the force experienced by the truck?
A ball is tossed from an upper-story window of a building. How long does it take the ball to reach a point 10.0 m below the level of launching?
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 14 g nail when it is struck by a 550 g hammer moving with an initial speed of 5.1 m/s.
If a 114 A · h battery can deliver a steady current of 4.5 A until it is completely depleted, what is the total time the battery can deliver current without being recharged?
The spring-loaded launcher makes an angles of 45 degree with the lower edge of the inclined plane.The goal is to get the ball in a small hole at the opposite corner of the inclined plane. With what initial velocity should you launch the ball to ac
A block of mass 2kg and another 6kg are connected by massless string over a pulley in a shape of a disk with radius 0.38m and a mass of 4kg. I addition, the blocks are allowed to move on a fixed block wedge of angle 46 degress. The coefficient of
A mass is fixed to a spring and slides along a surface without friction. The mass is 0,50 kg and the spring constant is k = 40 N/m. We pull the mass to the right, 8,0 cm from the point of equilibrium, and then release it.
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