Pendulum rises a maxium vertical distance
A 50-g bullet is fired into and becomes embedded in a 300-g wooden ballistic pendulum with a solid arm. If the pendulum rises a maxium vertical distance of 0.35m what was the speed of the bullet just prior to the collision?
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A sound has an intensity of 38.0 w/m2. A second sound has an intensity level which is 2.5 dB greater than the intensiry level of the first sound. What is the intensity of the second sound?
Use the Empirical Rule: approximately 95% of all newborn respiratory rates per minute are between ___ and ___ Please use whole numbers.
At this temperature, the silicon resistor has a temperature coefficient of resistivity of -0.070°C-1 and the tungsten resistor has a coefficient of 0.0050°C-1. At what temperature will their resistances be equal?
A point particle with charge q = 52 µC is placed at a corner of a cube of edge a = 7.8 cm. What is the flux through (a) each cube face forming that corner and (b) each of the other cube faces?
Osmium (Os) is the densest element known (density = 22.57 g/cm3). Calculate the mass in pounds and in kilograms of an Os sphere 37 cm in diameter (about the size of a grapefruit).
(a) If the phone is 40 m above the ground when it is dropped, how long does it take for the phone to reach the ground? (b) What is its velocity just before it lands? Choose upward as the positive direction.
A Styrofoam ball of mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?
Calculate the number of moles of hydrogen gas that are present at equilibrium if a mixture of 0.300 moles of carbon monoxide and 0.300 moles of water vapor are heated to 700 degrees Celcius in a 10.0 L container.
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