In which of these situations does a roller coaster have the most kinetic energy?

A. climbing up the first hill

B. at the top of the first hill

C. half-way down the first hill

D. at the bottom of the first hill

If an injury is caused by impact from an object alone, is this considered a caught-in or - between incident? Select the best option No, this is a struck-by incident Yes No, this type of incident is undefined

A person has been exposed to a particular antigen and now experiences a repeat exposure. What stimulates a quicker immune response? a) Memory T cellsb) immunityc) antibodiesd) macrophages

Air creates a frictional drag acting with the motion of falling objects. True False

Which of these most directly affects what happens to white light when it hits an object? the properties of the object the source of the light the speed at which the light travels the distance of the object from the light

The power of machine measures

A ship leaves the island of Guam and sails a distance 255 km at an angle 49.0 o north of west. Part A: In which direction must it now head so that its resultant displacement will be 125 km directly east of Guam?

What is the molecular geometry of a methane (CH4) molecule?

Why do scientist use radioactive decay to figure out how old stuff is

The power of a machine measures A. its rate of doing work. B. its strength. C. the force it produces. D. the work it does.

the acceleration of gravity is 28 times on sun than earth. Imagine there is a space suit that let you stand on sun. Calculate the weight of 100 kg person on earth in newtons