If a 4. 5 kg object is dropped from a height of 6. 0 m, what will be its velocity when it is halfway toward the ground? (Use g = 9. 80 m/s2, and ignore air resistance. ) 7. 7 m/s 11 m/s 16 m/s 29 m/s.

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47