Which of the following is an example of applying a force?

A. an airplane soaring through the sky

B. a train speeding down a track

C. a carpenter hammering a nail

D. child running through a field

What kind of charge does an object have when it has given away electrons?

A small rock falling from the top of a 124-ft-tall building with an initial downward velocity of - 30 ft/sec is modeled by the equation h (t) = - 16t2 - 30t + 124, where t is the time in seconds.

1. Why does Earth's moon have no atmosphere - the average temp is too high -there are no plants to release oxygen -the moon is too far from Earth -the moon's gravity is too weak to hold onto gas molecules 2.

When using wooden pallets to store batteries, place the pallets on sand or gravel? True or False?

10) Two students want to use a 12-meter long rope to create standing waves. They first measure the speed at which a single wave pulse moves from one end of the rope to another and find that it is 36 m/s.

When a certain isotope, such as U-238, is hit by a neutron, it will always split into the same smaller nuclei. true or false?

A person walks 7 feet east stops and walks 7 feet west

Using the drop-down menus, choose the right government service to complete each sentence. Providing a free public education for all children is an example of supporting. Fighting fires is one way in which the government ensuresfor citizens.

A galilean telescope adjusted for a relaxed eye is 36cm long. If the objective lens has a focal length of 40cm, what is the magnification?

If a car goes along a straight road heading east and speeds up from 45 ft/s to 60. ft/s in 5 sec, calculate the acceleration