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A 2.0 kg pendulum bob on a string 1.5m long is released with a velocity of 0.0 m/s when the support string makes an angle of 60 degrees with the vertical. What is the tension in the string at the bottom of the swing?
A cylinder of mass10.0kg rolls without slipping on a horizontal surface. What is the rotational kinetic energy about its center of mass
An electric power station is producing 1.2e3 W of power that is to be sent to a small town located 12 km away. Find the power lost in heating the wires
water has a mass per mole of 18.0 g/mol, and each water molecule (H20) has 10 electrons. what is the net charge of all these electrons
A 1700kg car travelling at a speed of 40m/s skids to the halt on wet concrete where f_k = 0.3. How long are the skid marks.
A particular material has a dielectric constant of 1.7 and a dielectric strength of 14.0 MV/m. If this material is used between the plates of a parallel-plate capacitor, what is the minimum area of the capacitor plates to obtain a capacitance of 4..
An object placed 14.9 cm from a concave mirror produces a real image 12.3 cm from the mirror. where is the new image located as measured from the mirror
A rod (length = 80 cm) with a rectangular cross section (1.5 mm ? 2.0 mm) has a resistance of 0.20 ?. What is the resistivity of the material used to make the rod
A common flashlight bulb is rated at 0.108 A and 3.28 V (the values of current and voltage under operating conditions). estimate the temperature of the tungsten filament
Since the period of a simple pendulum depends only on its length (and g), How long would that standard be, in meters
A step-up transformer is connected to a generator that is delivering 139 V and 110 A. what voltage is across the secondary
Calculate the critical angles for the following materials when surrounded by air. Assume that ? = 589 nm
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 79.6 m/s at ground level. The engines then fire, For what time interval is the rocket in motion above the ground
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