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1. At 46°C a sample of ammonia gas exerts a pressure of 5.3 atm. What is the pressure when the volume of the gas is reduced to one-fifth (0.2) of the original value at the same temperature? 2. A gas-filled balloon having a volume of 2.00 L at 1.2 atm and 25°C is allowed to rise to the...

I keep downloading adobe flash from many places including adobe and it still doesnt work on Firefox. Example: I cant see youtube videos because it asks for that. And yes, java and javascript do work. Oddly, it works in internet explorer and not firefox. Am i missing something on firefox or do i...

Name as many as possible (in all positions).

There used to be this game that you played as a nerd. You're goal was to hack into certain machines like a tractor, car, bus, etc that look like moving discs with numbers on them. For example, the weaker ones had numbers like 103,124 and the strong ones were 945,942. When you hack them, theres...

A uniform steel beam has a mass of 850 kg. On it is resting half of an identical beam on the left. They are supported by 2 legs on each side. What is the vertical support force at each end? A shop sign weighing 235 N is supported by a uniform 145 N beam. The beam measures 1.70 m and it is...

uniform steel beam has a mass of 850 kg. On it is resting half of an identical beam on the left. They are supported by 2 legs on each side. What is the vertical support force at each end? A shop sign weighing 235 N is supported by a uniform 145 N beam. The beam measures 1.70 m and it is...

A bowling ball of mass 6.7 kg and radius 9.0 cm rolls without slipping down a lane at 4.3 m/s. Calculate its total kinetic energy. A 3.35 m long pole is balanced vertically on its tip. It starts to fall and its lower end does not slip. What will be the speed of the upper end of the pole just...

A child throws a 6 kg package out horizontally with a speed of 10m/s. Calculate the velocity of the boat immediately after, assuming it was at rest initially. The mass of the child is 23 kg and the boat is 55 kg. Ignore water resistance. A 13 g bullet traveling 220m/s penetrates a 2 kg block...

A. A force of 25.0 N is required to start a 3.0 kg box moving across a horizontal concrete floor. (a) What is the coefficient of static friction between the box and the floor? (b) If the 25.0 N force continues, the box accelerates at 0.50 m/s2. What is the coefficient of kinetic friction? B...

A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.62 of the person's regular weight. Calculate the acceleration of the elevator, and find the direction of acceleration. Arlene is to walk across a high wire strung...