How do folded mountains form

At the starting gun a runner accelerates from rest at 1.7 m/s^2 for 2.2 What is the runner's speed 1.3 s after she starts running?

If you hold a horizontal metal bar several centimeters above the ground and move it through grass, each leaf of grass bends out of the way.?

A load of 600N is raised by an effort of 2000 by using I meter long crowbar. If the lod is 20cm away from the fulcrum, what is the efficiency of the crow-bar?

All the planets orbit the Sun

Quaternary structure is achieved when a protein folds into a compact, three-dimensional shape stabilized by interactions between side-chain R groups of amino acids. True or False.

Mohammed made a chart to list examples and nonexamples of projectile motion. Which best completes the chart? a - a football thrown in the airb - a kite flying on a stringc - a golf ball rolling off a table d - water spraying from a fountain

Halley's Comet appears around the sun about once every 76 years. It passes through the part of its orbit nearest the sun in just a few months but then moves out to great distances and takes more than half a century for the rest of its orbit.

In order to hike around a portion of Lake Allatoona, a tour guide determines that he must take his group 150 m east, 60 m north, then 75 m west.

Explain what happens to light when it is refracted at the surface of water.

A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the magnitude of the momentum change during the collision is correct? (There could be more than one correct choice.