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A biconvex ice lens is made so that the radius of curvature of the front surface is 12.3 cm and that for the back is 20.5 cm. Determine how far you would put dry twigs if you wish to start a fire with your ice lens.
a proton and an alpha particle q 2e m 4 u are fired directly toward each other from far away each with an initial
A semi-trailer is coasting downhill along a mountain highway when its brakes fail. What was the truck's initial speed
A line of negative charge lies along the x-axis from -3.40 cm to +5.30 cm. Calculate the net electric flux through the Gaussian surface
A flywheel in a motor is spinning at 580 {rm rpm} when a power failure suddenly occurs. The flywheel has mass 40 {rm kg} and diameter 75 {rm cm}.
Tension is maintained in a string as in the figure below. The observed wave speed is 27 m/s when the suspended mass is 3.0 kg. What is the mass per unit length of the string
A tank 2.30 meters in height is filled with water to a level of 2.10 meters. At the bottom of the tank a hose is attached. Find the velocity of the water coming out of the hose
a cone with a base radius of r contains a charge inside its surface. the flux through the curved portion of the cones
You pull your little sister across a flat snowy field on a sled. Your sister plus the sled have a mass of 31 kg. The rope is at an angle of 30 degrees to the ground. As you pull with a force of 30 N, the sled travels a distance of 45 m.
Suppose the device is used at a service station to measure the flow rate of gasoline (? = 7.00 102 kg/m3) through a hose having an outlet radius of 2.56 cm. Find the speed of the gasoline as it leaves the hose
What is an average velocity of the train throughout run
A simple harmonic oscillator consists of a block of mass 4.kg attached to a spring of spring constant 153 N/m. When t = 2 s, the position and velocity of the block are x = +0.129 m and v = +3.415 m/s.
A ball is thrown horizontally with a speed of 10.0m/s, from the edge of the top of a building of height 19.6m, What is the vertical component of the velocity just before the ball strikes the ground
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