HELP PLEASE! A particle moves along the x-axis, with x given in meters. Its position is described by the following equation: x(t) = 6 + 4t - 7t^2.
A) Determine its position, velocity, and acceleration at t = 3s
B) Its position when it changes direction
C) Its velocity when it returns to the position it had at t = 0

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

The necleus of an atom is made up of what subatomic particles?

Atank is filled with an ideal gas at 400 k and pressure of 1.00 atm . part a the tank is heated until the pressure of the gas in the tank doubles. what is the temperature of the gas?