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A uniform 1.9-kg rod that is 0.78 m long is suspended at rest from the ceiling by two springs, one at each end. Both springs hang straight down from the ceiling. The springs have identical lengths when they are unstretched. Their spring constants are 22 N/m and 65 N/m. Find the angle that the rod makes with the horizontal.
A ball is thrown vertically upward, starting at y = 0, with a velocity of 20.0 m/s. Take "up" to be the positive direction for this problem. Calculate the maximum vertical displacement of the ball
A person undergoing radiation treatment for a cancerous growth receives an absorbed dose of 1.8 Gy. All the radiation is absorbed by the gowth. Determine the rise in temperature
Two 1.8 V. batteries are connected together in series to a bulb whose resistance is 50 ohms. How many electrons leave each battery per minute
An archeological specimen containing 10.2 g of carbon has an activity of 1.6 Bq. How old (in years) is the specimen
How various kilograms of nitrogen are boiled away in time of 7.50 h. car that hits a line of water barrels and takes 1.8s to stop.
9.00 of aluminum at and 19.0 of copper are dropped into 51.0 of ethyl alcohol at. What is the initial temperature of Copper
What is the mass in kg of the air in a scuba tank that has an internal volume of 0.01 m3 and it is pressurized o that the density of the air in the tank is 240 kg/ m3
In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. Determine the angle of the total acceleration relative to the radial direct..
Sketch on Eratosthenes' method, if two observers are due north and south of each other and are separated by 700 km, what is the circumference of their spherical world if they see same star on their meridian at altitudes of 26 degrees and 47 degrees r..
While remodelling your garage, you need to temporarily splice, end to end, an 80 m long copper wire that is 1.130 mm in diameter with a 49.0 m long aluminium wire that has the same diameter. The maximum current in the wires is 2.00 A.
A solid sphere of mass 4.4 kg and radius 0.12 m is at rest at the top of a ramp inclined 15°. Find the sphere's total kinetic energy when it reaches the bottom
An 79-kg stuntman jumps from a window of a building situated 33 m above a catching net. Assuming that air resistance exerts a 100-N force on the stuntman as he falls, identify his velocity just before he hits the net.
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