What are main causes by tornadoes

A 426.7 Hz tuning fork is resonating in a closed tube on a warm day when the speed of sound is 346 m/s. What is the length of the closed tube?

What type of device is a car engine? A. A heat pump that uses heat to do work B. A heat engine that uses work to move heat C. A heat pump that uses work to move heat D. A heat engine that uses heat to do work

Difference between duracell and interstate golf cart batteries

When growing tomatoes with little sunlight, will using a mirror to reflect the sunlight give the same result as direct sunlight?

The number ocean waves that pass a buoy in one second is _ of the wave

What is the mass of a 2.00 cm cubed block of iron? The density of iron is 7.87 g/cm cubed

Emotional abuse is less harmful than physical abuse. a. True b. False

What are the factors affecting the refractive index? Explain?

The Jetsons are taking a family vacation. Their car gets 30 miles per gallon in gas mileage. They are traveling for seven hours at a rate of 55 miles per hour. Assuming no stops, how much gas will they need to complete their seven hour trip?

A 2000kg car travelling east at 24/ms enters an icy intersection and collides with a 3600kg truck travelling south at 10 m/s. If they become coupled together in the collision, what is their velocity immediately after impact?