A ball flies through the air. Right before it hit the ground, it's peed is 10 meters/second and it has 500 joules of kinetic energy. The mass of the ball is ___ kilograms

A 20-kg object is subjected to three forces which produce an acceleration a = - 8 m. s^-2 i + 6.0 m. s^-2 j on the object. Two of the forces are:F1 = 3.0 N i + 16.0 N jF2 = - 12.0 N i + 8.0 N jFind the third force.

Nick lives in area that has a south-facing slope. The temperature in his area is always high. Which of these abiotic factors is responsible for high temperatures in Nick's area? A) nutrients B) soil C) water D) topography

Resistors and reactors, for use over 600 volts, shall not be installed in close enough proximity to combustible materials to constitute a fire hazard and shall have a clearance of not less than ___ from combustible materials.

Altruism means being completely selfless and yet eanting nothing in return True / False

A simple motor converts

White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because of sudden industrial development, the trees in the city were covered with soot.

What would happen if water could not condense into the atmosphere

How did rutherford's experiment show that thomson's plum pudding model was incorrect?

A car accelerates from 30 m/s to 50 m/s in 2 seconds. Calculate the cars acceleration

What color of light has the shortest wavelength