Un cañón dispara una bala horizontalmente a una velocidad de 25 m/s, y esta experimenta un movimiento

parabólico de caída libre. Sabiendo que la bala impacta en

el piso luego de 8 segundos. Calcule la altura a la que se

encuentra el cañón con respecto al piso​

What is friction? how does it affect the motion of an object?

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.