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Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. At the same time a proton is also halfway between the plates, but far enough away from the electron to ignore the interaction between the two. Both strike the plates at the same time. What was the initial speed and direction of the proton?
A proton has a kinetic energy of 8.5 MeV. If its momentum is measured with an uncertainty of 4.0%, what is the minimum uncertainty in its position
A 2.50g ice flake is free from the edge of a hemispherical bowl whose radius r is 31 cm. The flake-bowl contact is frictionless. What is the speed of the flake when it reaches the bottom of the bowl?
Consider the earth following its nearly circular orbit (dashed curve) about the sun. find the size of the gravitational force acting on the earth
what is the net workdone on the weights.A child slides down a hill on a toboggan with an acceleration of 1.8 m/s2. If she starts at rest, how far has she traveled after following lengths of time.
An electron and a positron each of mass 9.1 x 10^-31 kg, are in the same general vicinity and have very small initial speeds
A thermos contains 159 cm3 of coffee at 93.7 °C. To cool the coffee, you drop two 13.2-g ice cubes into the thermos. What is the final temperature of the coffee
If this system is used with a detector with an intrinsic pulse height resolution of 4%, what will be the expected overall pulse height resolution
A 35 g bullet moving at 475 m/s strikes a 4.20 kg bag of flour that is on ice, at rest. The bullet passes through the bag, leaving at 270 m/s. How fast is the bag moving when the bullet exits.
Find the intensity of the starlight at the Earth, Find the power of the starlight the Earth intercepts. One light-year is the distance traveled by the light through a vacuum in one year
Two bars of identical mass are at 32 °C. One is made from glass and the other from another substance. What is the specific heat capacity of the other substance
A hydrogen atom initially in its ground state absorbs a photon and ends up in the n=6 state. Calculate the energy of the incident photon
A 0.031 kg aluminum bullet traveling at 487 m/s strikes an armor plate and comes to a stop. what is the bullet's temperature change in degrees Celsius
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