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After sliding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield at a constant velocity of +2.6 meter per second. Miranda runs after her at a velocity of +4.2 meter per second and hops on the inner tube. Determine how fast do the two of them slide across the snow together on the inner tube? Ashley's mass is 74 kilogram and Miranda's is 55 kilogram. Neglect the mass of the inner tube and any friction between the inner tube and the snow.
A ball of mass 5.0 Kg is lifted off the floor a distance of 1.7 m. what is the kinetic energy of the ball just before it hits the floor? What is its velocity
The tension at which a fishing line snaps is commonly called the line's “strength.” What minimum strength is required for a line that is to stop a salmon of weight 83 N in 14 cm if the fish is initially drifting horizontally at 3.2 m/s? Suppose a con..
In a series R-L-C circuit, R= 300oms, Xc=300oms and XL=500 oms . The average power consumed in the resistor is 60.0 W. What is the power factor of the circuit
A lab technician is testing new energy drink formulations on a series of hamsters. The hamsters are given a certain amount of the beverage, and then placed on exercise wheels to observe their energy levels. Due to poor planning, however, each exercis..
What's your normal body temperature? It may not be 98.6°F, the oft-quoted average that was determined in the nineteenth century. What is the difference between these averages
A block of mass 0.6 kg is moving up a 40 degree inclined plane at a speed of 1.6 m/s. Assuming the surface is frictionless, how far up the plane will the block go before stopping
A 6.0-V battery is connceted in series with a 29-mH inductor, a 110-Ω resistor, and an open switch. After the switch is closed, how much time will elapse before the current in the circuit will be equal to 12 mA?
Calculate the number of coulombs of positive charge in 270 cm3 of (neutral) water. (Hint: A hydrogen atom contains one proton and an oxygen atom contains eight protons.) I keep getting 1.4E7 and its showing up wrong.
200mH inductor with 78 ohm resistance is connected in series to a 16 u F capacitor and a 60 Hz Vrms = 25 V source. Calculate the rms current
String is wrapped several times around the rim of a small hoop with radius 0.0800 meters and mass 0.137 kg. If the free end of the string is held in place and the hoop is released from rest compute the tension in the string while the hoop descends as..
AM radio signals have frequencies between 550 kHz and 1600 kHz (kilohertz) and travel with a speed of 3.0×108m/s. What are the wavelengths of these signals
An evacuated spherical diving bell containing a camera is in the ocean at a depth of 187 m. Find the magnitude of the total force on the port
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