1. A spring gun fires a 1kg ball vertically with a velocity of 8m/s. Calculate the highest point of its path???? (Does mass actually play a factor in the answer)
2. If an atom has a diameter of .1mm, how many of them will it take to cover 730 cm^2 disk to a depth of 1 atom?
3. If the average Kinetic Energy of a collection of a 1000 hydrogren molecules is 6x10^-22 J, what is the pressure created when they are confined to a 1m^3 box?
4. A cubic centimeter of mercury has a mass of 13.6 g. what is the atmosphere pressure if the mercury column in the barometer stands 75cm high?
5. Each cubic inch of mercury has a weight of .5 pounds. what is the pressure at the bottom of a column of mercury 10 inches tall if there is a vacuum above the mercury?
6. How much heat is released when 100 g of steam at 100 degrees C condenses to water at 100 degree C? The latent heat of fusion and vaporization are 334kJ/kg and 2257 kj/kg, respectively?
7. A 100 m bridge is designed to withstand a thermal expansion of up to .01m, if the bridge is made from a material with a coefficient of thermal expansion of 10^-6/degrees celsius, how much of a temperature change can this structure accomodate?
8. what is the ratio of kinetic energies of a ball and a bullet if the bullet has one-tenth the mass of the ball but 100 times greater velocity?
9. A frictionless rollercoaster starts from rest at a height of 30 m above the gravitational point. how fast is it going when its 10 m above the zero point?
THANK YOU!!!
ANY HELP IS GOOD! IT DOESNT HAVE TO BE ALL OF THE PROBLEMS!
2. If an atom has a diameter of .1mm, how many of them will it take to cover 730 cm^2 disk to a depth of 1 atom?
3. If the average Kinetic Energy of a collection of a 1000 hydrogren molecules is 6x10^-22 J, what is the pressure created when they are confined to a 1m^3 box?
4. A cubic centimeter of mercury has a mass of 13.6 g. what is the atmosphere pressure if the mercury column in the barometer stands 75cm high?
5. Each cubic inch of mercury has a weight of .5 pounds. what is the pressure at the bottom of a column of mercury 10 inches tall if there is a vacuum above the mercury?
6. How much heat is released when 100 g of steam at 100 degrees C condenses to water at 100 degree C? The latent heat of fusion and vaporization are 334kJ/kg and 2257 kj/kg, respectively?
7. A 100 m bridge is designed to withstand a thermal expansion of up to .01m, if the bridge is made from a material with a coefficient of thermal expansion of 10^-6/degrees celsius, how much of a temperature change can this structure accomodate?
8. what is the ratio of kinetic energies of a ball and a bullet if the bullet has one-tenth the mass of the ball but 100 times greater velocity?
9. A frictionless rollercoaster starts from rest at a height of 30 m above the gravitational point. how fast is it going when its 10 m above the zero point?
THANK YOU!!!
ANY HELP IS GOOD! IT DOESNT HAVE TO BE ALL OF THE PROBLEMS!