How much mass is needed for a black hole?

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?

A transformer has 1000 turns in the primary coil and 100 turns in the secondary coil. If the primary coil is connected to a 120 V outlet and draws 0.050 A, what are the voltage and current of the secondary coil

determine the required values of the tension in ac and ad so that the resultant of the three forces applied at A is verticalFigure:A wire is coupled from three sides

What causes the rider on a roller coaster to experience the + or - g's if gravity always remains the same on earth

The acceleration of your bicycle as you ride it from your home to the store

Explain how inertia and the shape of a loop counteract the force of gravity to keep riders from falling out when a roller coaster goes through a loop traveling upside down

Which is not a characteristic of an ideal fluid? A. high viscosity B. laminar flow C. constant density D. constant pressure

What type of weather system brings calm, clear weather?

What is one reason supporting genetic modifications to food

Match the description of how heat is transferred to the proper term. A. When two things in contact with each other transfer heat Convection B. When a liquid or gas carries heat Conduction C. When waves transfer heat Radiation