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You are to make four straight-line moves over a flat desert floor,starting at the origin of an xy coordinate system andending at the xy coordinates (-135 m, 40 m). The xcomponent and y component of your moves are the following,respectively, in meters: (20 and 60), then (bx and -70),then (-20 and cy), then (-63 and-71).(a) What is component bx?(b) What is component cy?(c) What is the the magnitude of the overall displacement?(d) What is the angle of the overall displacement?
The spaceship Lilac, based on the Purple Planet, is 791 m long, as measured at rest. When Lilac passes Earth, Terran observers measure its length to be 733 m.
A 2.0 kg cart has a spring with k = 5000 N/m attached to its front, parallel to the ground. What is the speed of each cart after the collision
A skier (m=63.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. Find her total kinetic energy as she reaches the ground
A power supply maintains a potential difference of 81.5 V across a 1.01-k? resistor. What is the current in the resistor in milliamperes?
An ac voltage source is connected in series with a1.4-?F capacitor and a 690-? resistor. Using a digital ac voltmeter, the amplitude of the voltage source is measured to be 4.0?V rms, Determine the frequency of the ac voltage source
A submerged submarine alters its buoyancy so that it initially accelerates upward at .325m/s^2. What is the submarine;s average density
What must the charge (sign and magnitude) of a 1.49-g particle be for it to remain stationary when placed in a downward-directed electric field of magnitude 660N/C?
A slide projector needs to create a 98 cm high image of a 2.0 cm tall slide. The screen is 300 from the slide. How far should you place the lens from the slide
An astronaut is traveling in a space vehicle that has a speed of0.455crelative to Earth. The astronaut measures his pulse rate at69.5per minute. What pulse rate does the Earth observer measure
An Electronic lift can raise a 216 kg mass a distance of 25.7 m in 5.0 seconds. What was the work done by the lift
A hydrogen atom that is initially at rest absorbs a photon with an energy of 18 eV. What is the momentum of the atom after it absorbs the photon
A simple camera lens with focal object length fO= 3 cm perfectly focuses the the image of an object on a photographic film located a distance 14 cm away from the lens. What is the new magnification
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