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We trust DNA evidence more than eye witness accounts for obvious reasons, but what downfalls occur with DNA forensics?
A disk released from the top of an inclined plane has a speed of 5.52 m/s at the bottom. How high is the upper end of the inclined plane
What is the ideal banking angle for a gentle turn of 1.80 km radius on a highway with a 110 km/h speed limit (about 68 mph), assuming everyone travels at the limit
A 2530 {\rm kg} satellite used in a cellular telephone network is in a circular orbit at a height of 710 {\rm km} above the surface of the earth. What is the gravitational force on the satellite
When a light bulb is connected across the terminals of a battery, the battery delivers 20 W ofpower to the bulb. A voltage of 12.8 Vexists between the terminals of the battery, which has an internalresistance of 0.14 Ω. What is the emf of the battery..
The small pistion of a hydraulic press has an area of 2.0 cm2 and the large position has an area of 16 cm2. If the small pistion has a force of 4.0 N applied to it, the output force of the large pistion is
A parallel-plate capacitor has fixed charges q and -q. The seperation of the plates is then doubled. How much work must be done in doubling the plate seperation from d to 2d
A virtual image of magnification +2.0 is produced when an object is placed 7.0 cm in front of a spherical mirror. Is the mirror (1) convex, (2) concave, or (3) flat? Find the radius of the curvature of the mirror.
A 1.5kg block intially at rest at the top of a 3m incline with a slope of 30degrees begins to slide down the incline. How fast is the block moving midway along the inlcine
A Martian leaves Mars in a spaceship that is heading to Venus. On the way, the spaceship passes earth with a speed v = 0.86c relative to it. What is the time of the trip (in seconds) as measured by the Martian
A long, straight wire lying along the x-axis carries a current, i, flowing in the positive x-direction. A second long, straight wire lies along the y-axis and has a current i in the positive y-direction. What is the magnitude and the direction of the..
The length of a spring increases by6.9cm from its relaxed length when a mass of1.7kg is hanging in equilibrium from the spring. How much elastic potential energy is stored in the spring
A golfer takes two putts to get his ball into the hole once he is on the green. What displacement would have been needed to get the ball into the hole on the first putt
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