If you want to lift a 5-kg box to a height of 2 meters, how much work must be

done?

O A. 50 J

O B. 98 J

O C. 100J

O D. J

Why is it important to use placebos and a double-blind approach in some studies

Which of the following is an example of uniform motion? A car going around a circular track at a constant speed. A person at rest starts running in a straight line in a fixed direction. A Ball dropped from the top of a building.

Which of the following is NOT an example of a transmutation? A. Uranium-238 emits an alpha particle forms thorium-234 B. Uranium-238 is bombarded with a neutron to produce uranium-239 C. Potassium-38 emits a beta particle and forms argon-38 D.

How does the doppler effect affect the velocity from a sourse that is approaching you?

Different between sky and space

The metallic elements which all react in water are found in the: same group same period rare earth elements

How much work is required to move a box 5 meters across the floor with a force of 15N?

Why have plants in the alpine biome adapted to survive on limited nutrients?

At a molecular level, does plasma have more or less energy than other states of matter?

A bobsledder pushes her sled across horizontal snow to get it going, then jumps in. After she jumps in, the sled gradually slows to a halt.