True or false. in science, a hypothesis must be true?

How much current would flow in a device powered by four 1.5 V batteries through a bulb that had a resistance of 51.0 ohms?

A go-cart travels around a flat, horizontal, circular track with a radius of 25 meters. The mass of the go-cart with the rider is 200. kilograms. The magnitude of the maximum centripetal force exerted by the track on the go-cart is 1200. newtons.

A rollercoster car and passengers of total mass 1800kg starts from rest at 80m above the ground. Ignoring air resistance and friction what will the speed be: At ground level At top of the next peak which has height of 30m Take gravity 10N/kg i

How does the gravitational force exerted on earth by the sun with that exerted by the moon

Earth's magnetic field can make a magnet out of an iron bar by causing the magnetic domains to

The gun, mount, and train car of a railway had a total mass of 1.22 x 10^6 kg. The gun fired a projectile that was 80 cm in diameter and weighed 7502 kg. In the firing, the gun has been elevated 20 degrees above the horizontal.

What does it mean when the orange light comes on for the anti-lock break? If it stays on what problem could it cause?

What is the relationship between matter and energy as it changes states of matter (phase changes?)

Television is becoming a more effective mass media outlet for advertising because so many more people own TV sets and have access to cable as well as satellite. A. True B. False

How to solve indices