By what factor does the force required to stop a car increase if the initial speed is doubled and the stopping distance remains the same?

Use the drop-down menus to complete the statements. investigations are best for demonstrating cause and effect relationships investigations are usually less time-consuming and less expensive investigations make it possible to study a wide range of

John is in need of a large amount of current in order to run his machine but he is not able to increase the current. What advice would you give to John to increase the current?

A ferromagnetic material that has domains that remain aligned for a long period of time is called A. a neutral object. B. nonmagnetic. C. a permanent magnet. D. a temporary magnet.

A device that changes mechanical energy to electrical energy by rotating a coil of wire through a magnetic field is called a (an) A. transformer. B. generator. C. electromagnet. D. current meter.

If your center of mass is not over your base, what will happen?

A grocery shopper tosses a (n) 9.1 kg bag of rice into a stationary 19.3 kg grocery cart. The bag hits the cart with a horizontal speed of 6.6 m/s toward the front of the cart. What is the final speed of the cart and bag? Answer in units of m/s.

Where do most metamorphic rocks processes take place?

A 13,500 kg railroad freight car travels on a level track at a speed of 4.5 m/s. It collided and coupled with a 25,000 kg second car, initially at rest and with brakes released. What is the speed of the two cars after collision

What type of waves move energy forward, but the source makes up and down

Why do helium balloons float? Talk about density of atoms and compare to elements in the air.