A 3000 kg freight train traveling at a rate of 2 m/s strikes a stationery 3000 kg freight car and couples up. What is the speed of the 2 cars as they move together after the collision?

Determina care este volumul unui vas de forma cubica cu pereti subtiri, ce are perimetrul bazei p=80 cm

What wave have a frequency of less then 20hz

How do newton's laws of motion explain why it is important to keep the ice smooth on a hockey rink so that players can pass a puck as quickly as possible? smooth ice reduces the inertia of the hockey puck.

What 3 weather insturements used to measure weather?

Is it normal to have 3 feet when you wake up?

Which method is used to counteract the effects of erosion caused by water

Which law explains a soccer player who kicks a ball with his foot and his toes are left stinging?

While a roofer is working on a roof that slants at 39.0 degrees above the horizontal, he accidentally nudges his 88.0 N toolbox, causing it to start sliding downward, starting from rest. If it starts 4.

Suppose that the centripetal force acting on an object in circular motion were doubled to a new value, and the object remained in a circular path with the same radius. How would the motion be affected?

2. Air at a temperature of 20 ºC passes through a pipe with a constant velocity of 40 m/s. The pipe goes through a heat exchanger in which hot gases outside the pipe heat up the air to 820 ºC.