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A 50 kilogram pitching machine (excluding the baseball) is located on a frozen pond. The machine fires a 0.40 kilogram baseball with a speed of 35 m/s in the horizontal direction. Find the recoil speed of the pitching machine? (Assume negligible friction.)
one mole of oxygen gas is at a pressure of 5.30 atm and a temperature of 23.0degc.a if the gas is heated at constant
a 2.0microf capacitor and a 4.0microf capacitor are connected in series across 1000 v. the charged capacitors are then
A 30-meter steel tape is correct at a temperature of 20.0(C). The distance between two points, What is the true distance between the points
a convex mirror has a focal length of magnitude 1.92cm.a if the image is virtual what is the object location for which
A container of volume V is divided by partitions into three parts containing one kilomole of helium gas, Calculate the kilomole fraction and the partial pressure of each gas in the mixture
Two wires on a piano are the same length and are stretched to the same tension. Wire 1 vibrates at a frequency 1.5 times that of wire 2. Calculate the ratio of their masses (m1/m2).
an object 9mm tall is placed 12cm to the left of the vertex of a convex spherical mirror whose radius of curvature has
Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m2, What is the surface charge density on the plates
Three charges make a triangle. Q1 is a 50 uC charge at the origin. Q2 is a -86 uC charge at (.52 m, 0). Q3 is a 65 uC charge at (0, .3). what is the total force on Q3?
a police car is traveling at a velocity of 16.0 ms due north when a car zooms by at a constant velocity of 45.0 ms due
A ball is thrown vertically upward with aspeed of 1.53 m/s from a point 4.21 m above the ground. Calculate the time in which the ball will reach the ground
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 2.02 mT. obtain the radius of the circular path
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