What is the speed of sound in dry air if th e temperature is 46°C?

A force of 9 N acts on an object on a floor to make it move at 6 m s^-1 what would happen to the object if the force is reduced to 3 N?

Refer back to your data. List all indicators of chemical change that you observed.

An adaptation of an animal in the desert might be to

An acrobat of mass mA jumps upwards off a trampoline with an initial speed v0. At a height h0, the acrobat grabs a clown of mass mB. Assume that the time the acrobat takes to grab the clown is negligibly small.

How does a speedometer and odometer work?

A substance has a density of 13.5 g/cm3. What is the volume of a 50 g block of this substance?

Select all of the answers that apply. Which statements are true regarding the scientific evidence supporting the big bang theory? Researchers found cosmic microwave background radiation, which is a heat imprint left over from the big bang.

How are magnetic poles and electrical charges similar? A. Their same forces repel each other, and their opposite forces attract each other. B. Their same forces attract each other, and their opposite forces repel each other. C.

As part of his meal, a workman has a cup containing a hot drink. In order to keep the drink hot whilst he eats the rest of his meal, he covers the cup, as shown in the figure. Which sources of energy loss does this action reduce? Tick two boxes.

When energy is transformed, the amount of usable energy?