Which describes the two parts of a measurement?

In a chemical change the combination of what changes

An airplane is sitting on a runway waiting to take off. The airplane begins to move down the runway and it takes 10 s for the airplane to leave the ground. The speed of the airplane at takeoff is 40 m/s.

Which of the following is an example of a contact force? Gravity Magnetic force Electrical force Air resistance

Which organism is a producer 1-oak tree 2-mushroom 3-mountain lion 4-butterfly

What is the mass of an object that weighs 500 newtons on earth? a. 0 kg b. 51 kg c. 512 kg d. 4900 kg

Between a substance and a mixture.

Two massive objects are fixed in position. A third object is placeddirectly between the first two at the position at which the totalgravitational force on the third object due to the two massiveobjects is zero.

Which statement best describes the magnetic properties of a material? Magnetic materials have many spinning, unpaired electrons Paired electrons of magnetic materials can move to other atoms Electrons of magnetic materials are strongly held by

when we examine the structures of the other terrestrial planets in our solar system, we see that their structure is similar to Earth's. Why do you think this is the case?

An ant is crawling along a straight wire, which we shall call the x axis, from A to B to C to D