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Suppose you adjust your garden hose nozzle for a hard stream of water. You point the nozzle vertically upward at a height of 1.5 {\rm m} above the ground. When you quickly move the nozzle away from the vertical, you hear the water striking the ground next to you for another 1.4s What is the water speed as it leaves the nozzle?
A point charge with charge q1 is held stationary at the origin. A second point charge q2 with charge moves from the point (x1, 0) to the point (x2,y2 ). How much work is done by the electrostatic force on the moving point charge? Express your answ..
Ignoring the container and the equilibrium vapor pressure of the liquid at 51.5 °C, find out the ratio of the mass of steam to the mass of ice. The specific heat capacity of steam is 2020 J/(kg C°).
A bare helium nucleus has two positive charges and a mass of 6.64 multiplied by 10-27 kg. What voltage would be needed to obtain this energy
question starting from rest a 4.0-kg body reaches a speed of 8.0 ms in 2.0 s. what is the net force acting on the
The speed of an electron is known to be between 3.0×106m/s and 3.3×106m/s . Estimate the uncertainty in its position
A projectile is launched with aninitial speed of 60 m/s at an angle of 60 degrees. It lands on ahillside 4 seconds later. What is the straight line distance to where it lands
Betty Bodycheck (mB = 54.7 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 42.4 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Find both Betty's and Sally's Kinetic Energies
Objects A and B are both positively charged. Both have a mass of 138 g, but A has twice the charge of B. How large is the electric force (in N) on A
A 43kg block of ice slides down the frictionless incline 1.50m long and 0.82m high. A worker pushes up against the ice, parallel to the incline, so that the block slides down at constant speed.
A parallel-plate capacitor with plates of area 580 cm2 and is connected across the terminals of a battery. What is the magnitude of the charge on each plate
a surface is so constructed that at all points on the surface the vector points outward. therefore it can be said
A uniform disk of radius 0.469 m and unknown mass is constrained to rotate about a perpendicular axis through its center. Find the mass of the disk
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