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If the speed of the crate at A is 15 ft/s which is increasing at a rate v=3 ft/s^2, determine the magnitude of the acceleration of the crate at this instant. [crate is on an incline sliding back toward the orgin at a distance of 10ft - no specific height is given. Also on the diagram it has: y=(1/16)*x^2 for the ramp].
A full length mirror on a closet door is 2.0 m tall. The bottom touches the floor. How long is the streak of reflected light across the floor
How many square meters of PV would it take to provide 1KW(about 1/3 of the power needed per person for health and comfort)for a world population of 6 billion? If these cells werecrystalline silicon of 200 microns thick( 200x10-6),what is the minim..
Calculate the hydrostatic difference in blood pressure between the brain and the foot in a person of height 1.83 m. The density of blood is 1060 kg/m3
A plane flies 338 km at an angle of 22.3 degrees north of east. find the displacement the plane must now take to reach the airport
When a car is traveling at 25 m/s on level ground, the stopping distance is found to be 22m. This distance is measured by pushing hard on the brakes so that the wheels skid on the pavement. The same car is driving at the same speed down an incline th..
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; What is the vertical component of the ball's velocity right before Sarah catche..
A tank of a car holds 16 gallons , a liter is .264 gallons, 1 inch equal 2.54 cm, and 1mile equal 1609 m, how many km can it travel on one tank if it gets 25mpg
A wheel is rotating about an axis that is in the z-direction. The angular velocity ωz is -6.00rad/s at t=0, increases linearly with time and is +8.00rad/s at t=7.00s. We have taken counterclockwise rotation to be positive. Is the angular accelerati..
What should be done with nuclear waste? Are our power and communication networks susceptible to "electromagnetic pulse"? IS hydraulic fracturing worth the associated risks
question a small block of mass m is given and initial speed vo up a ramp inclined at angle theta to the horizontal. it
Nichrome wire of cross-sectional radius 0.758 mm is to be used in winding a heating coil. compute the length of the wire you must use to wind the coil?
A single 4.5 µF capacitor is connected across the terminals of a 60-Hz voltage source, and a current of 2.0 mA is measured on an ac ammeter. What is the capacitive reactance of the capacitor
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