Find the approximate value of the circumference of a circle with the given radius. Use π = 3.14. Round your results to one more decimal than in the given radius.

6ft.

c=

In a bomb-calorimeter experiment, the can is filled with 2.0 kg of water. One gram of substance of known energy content 28.5 MJ/kg is burnt and the observed temperature rise is 2.76 °C.

Describe the motion of the blocks before and after they are knocked down. Also describe the interactions of the blocks with other objects as they are knocked down and fall.

One beam of electrons moves at right angles to a magnetic field. The force on these electrons is 4.9 * 10-14 newtons. A second beam travels at the same speed, but at a 30° angle with the magnetic field. What force is on these electrons? A. (4.

At what age can you have sex

When transferring electric charge, an object becomes negative when it a) loses protons b) gains electrons OC) loses electrons d) gains protons e) a and d are correct

Why oil does not dissolve in water?

Which element has the highest number of protons? a. Calcium b. Argon c. Xenon d. Radon

Which are the most common producers in aquatic ecosystems? a - bacteria b - algae c - fish d - plants

You push a piano 5 meters across the floor with a force of 400 n. how much work have you done?

Monochromatic electromagnetic radiation illuminates an area of a surface. The electric and magnetic fields of the waves are then doubled in magnitude.