Aprojectile of mass m is fired horizontally with an initial speed of v0 from a height of h above a flat, desert surface. neglecting air friction, at the instant before the projectile hits the ground, find the following in terms of m, v0, h and g: (a) the work done by the force of gravity on the projectile,
(b) the change in kinetic energy of the projectile since it was fired, and
(c) the final kinetic energy of the projectile. (d) are any of the answers changed if the initial angle is changed?
Answers: 1
Physics, 22.06.2019 07:10
1. how much energy is needed to raise the temperature of 40.0 g of argon from 25c to 40c? the specific heat capacity of argon is 0.520 j/(g·k) 2a. 23.0 ml of 0.100 m hcl (standard) are added from a buret to neutralize 50.0 ml of an unknown basic solution. 2b. if the oh- produced in the previous reaction came from ca(oh)2, then what is the molarity of the ca(oh)2? 3.calculate the new freezing-point of a solution when 60.5 grams of cacl2 solute is dissolved in 0.612 kg of water. 4. what is the maximum number of moles of alcl3 that can be produced from 5.0 mol al and 6.0 mol cl2? 5. a sample of oxygen gas has a volume of 150 ml when its pressure is 0.923 atm. if the pressure is increased to 0.987 atm and the temperature remains constant, what will the new volume be? 6. nitrogen gas in a closed container at a temperature of 100.0 oc and 3.0 atm is heated to 300 oc. what is the pressure of the gas at the higher temperature?
Answers: 3
Physics, 22.06.2019 11:30
A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?
Answers: 2
Physics, 22.06.2019 11:30
Which accounts for an increase in the temperature of a gas that is kept a constant volume
Answers: 1
Aprojectile of mass m is fired horizontally with an initial speed of v0 from a height of h above a f...
Mathematics, 25.03.2021 02:40
English, 25.03.2021 02:40
Geography, 25.03.2021 02:40
Social Studies, 25.03.2021 02:40
History, 25.03.2021 02:40
Mathematics, 25.03.2021 02:40
History, 25.03.2021 02:40
Mathematics, 25.03.2021 02:40
Mathematics, 25.03.2021 02:40
History, 25.03.2021 02:40