Which statement is NOT true?

Light travels with or without a medium

Light travels faster than sound

Sound must have a medium to travel through

Both light and sound must have a medium to travel through

You pour 250 g of tea into a Styrofoam cup, initially at 80? C and stir in a little sugar using a 100-g aluminum 20? C spoon and leave the spoon in the cup.

Upper troposphere waves that play a large part in the formation of cyclones and anticyclones are called? This was in my Science test yesterday and I blindly put the Coriolis effect. I had no idea what it was ...

There are four major auto routes from boston to detroit and six from detroit to los angeles. how many major auto routes are there from boston to los angeles via de-troit

Which of the following provides evidence that Earth's Moon is rotating and revolving at the same rate? A. The Moon looks very large from Earth. B. We can see only one side of the Moon from Earth. C. The Moon is always in the same position in the sky.

The unit of potential is the?

As stream velocity decrease, which factor will likely increase? A) erosion of the stream bank B) deposition of material in the stream C) amount of material carried downstream D) size of the particles carried downstream

What cells in the nervous signals travel through the nervous system

A mechanic pushes a 3.60 ✕ 103-kg car from rest to a speed of v, doing 5,130 j of work in the process. during this time, the car moves 21.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.

Anika asks Eva to roll a basketball and then a bowling ball to her. Which requires more force to roll, and why?

Why does a buoyant force act on every object in a fluid? Pressure pushing up on the bottom of the object is greater than the pressure pushing down on the top.