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A cart is driven by a large propeller or fan, which can accelerate or decelerate the cart. The cart starts out at the position x = 0 m, with an initial velocity of + 6.0 m/s and a constant acceleration due to the fan. The direction to the right is positive. The cart reaches a maximum position of x = + 13.1 m, where it begins to travel in the negative direction. Find the acceleration of the cart.
an arrow is shot from the edge of a cliff downward at an angle of 30 degrees below the horizontal. as it falls how does
An athlete completed a marathon in 2 h, 39 min, 41 s. Determine the average speed (in miles per hour) of the athlete.
A planet orbits the sun with a period of 14 years? How far is the planet from the sun
In the photoelectric effect, the maximum wavelength for electrons to be emitted from a surface is 686 nm. What is the speed of the emitted electrons
An elevator moves downward in a tall building at a constant speed of 3.80 m/s. Estimate the highest floor from which the bolt can fall
Coherent light with wavelength 610 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright..
The North Star (Polaris) is a distance 431 ly away and radiates energy in the form of light at a rate of 8.6 x 1029 W. What is the intensity of this light at the Earth
Archer fish often prey for flies that hover above the water. The index of refraction of water is 1.33. what would be a "safe" horizontal seperation for the fly
An object with a charge of 0.920 µC is placed at the center of a regular tetrahedron with 4 equivalent surfaces. What is the electric flux through one surface of the tetrahedron?
The radius of the circle traced out by the second hand on a clock is 6.00 cm. Determine the value of t in seconds
Xenon ions with a mass of 2.20×10?25 kg and charge +e are accelerated between the plates of an ion drive rocket engine to an exhaust velocity of 43,200 m/s. What is the potential difference between the plates
q1. the period of oscillation of an object in a frictionless tunnel running through the earth is 84.3 min. what is the
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