An object's speed is determined from the object's

The coefficient of cubical expansion of a substance depends on? change in volume original volume rise in temperature none of the above

Explain the advantages and disadvantages of using concentric circles in describing the solar system to an elementary school child.

Exploring floating and sinking

A 4.20 gg coin is placed 15.0 cmcm from the center of a turntable. The coin has static and kinetic coefficients of friction with the turntable surface of μsμsmu_s = 0.700 and μkμkmu_k = 0.420.

Suppose that she pushes on the sphere tangent to its surface with a steady force of F = 75 N and that the pressured water provides a frictionless support. How long will it take her to rotate the sphere one time, starting from rest?

A massive and a less massive object free-fall at the same rate because A. the ratio of the net force to mass is the same for each B. the gravity is the same C. they weigh the same amount D. they experience the same force of gravity E. none

Which of the following lists the Earth's layers in order from hottest to coldest in temperature? A. outer core, mantle, inner core, crust B. crust, mantle, outer core, inner core C. inner core, outer core, mantle, crust D.

A boy does 465 J of work pulling an empty wagon along level ground with a force of 111 N [31o below the horizontal]. A frictional force of 155 N opposes the motion and is actually slowing the wagon down from an initial high velocity.

Which of the following best explains why the tidal bulges on Earth are larger closest to the Moon compared to the tidal bulges closest to the Sun?

an airplane flies with a constant speed of 600 miles per hour. how long will it take to travel a distance of 2100 miles?