Probability
how many can 5 people be arranged in a row if the father is on the far right?
Physics
A vibration platform oscillates up and down with an amplitude of 10.2 cm at a controlled variable frequency. Suppose a small rock of unknown mass is placed on the platform. At what frequency will the rock just begin to leave the surface so that it starts to clatter?
Physics
Two electrons are fixed 2.99 cm apart. Another electron is shot from infinity and stops midway between the two. What is its initial speed?
Physics
This question contains a graph: h t t p : / / i . i m g u r . c o m / Q z l x d . p n g
Chemistry
Calculate the heat released from 61.5 g of steam at 111 degrees C is converted to water at 39 degrees C. Assume the specific heat of water is 4.184 J/g*C, the specific heat of steam is 1.99 J/g*C and the enthalpy.H.vap= 40.79 KJ/mol of water
Chemistry
What is the Heat Change in kilojoules when 61.5 g of steam is cooled from 111 degrees C to 100 degrees C?
Physics
Figure (a) shows charged particles 1 and 2 that are fixed in place on an x axis. Particle 1 has a charge with a magnitude of |q1| = 12.0e. Particle 3 of charge q3 = +13.0e is initially on the x axis near particle 2. Then particle 3 is gradually moved in the positive direction ...
Physics
Figure (a) shows charged particles 1 and 2 that are fixed in place on an x axis. Particle 1 has a charge with a magnitude of |q1| = 12.0e. Particle 3 of charge q3 = +13.0e is initially on the x axis near particle 2. Then particle 3 is gradually moved in the positive direction ...
Math
What's the least common multiple of 2 and 2.5?
Physics
This problem contains a graph: h t t p : / / i . i m g u r . c o m / p s z e p . p n g
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