What minerales do plants need to survive

A thermodynamic system gains 1500j of heat from the surroundings, and does 3500j of work as a result. - a. determine the change in the internal energy. - if the system gains 1500j of heat but 3500j of work is done on the system: - b.

If element X has 78 protons, how many electrons does it have?

What is the weight of a 30.0 kg object?

A photon with a wavelength of 2.29 * 10^-7 meter strikes a mercury atom in the ground state. Based on your answer to question 79, state if this photon can be absorbed by the mercury atom. Explain your answer.

A small rectangular block of metal must be a magnet is it a. Aligns itself east west when hung up from the ceiling b. Is attracted towards a magnet c. Is made of steel d. Is repelled by a magnet

What is the power output of an electric motor that lifts a 2.0-kilogram block 15 meters vertically in 6.0 seconds? (1) 5.0 J (3) 49 J (2) 5.0 W (4) 49 W

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

What is the difference between force and energy

The scientific method is? (apex) A. The method used to review conclusions B. How scientists come up with ideas C. The procedure scientists use to gain knowledge about the physical universe D. The method used by scientists to measure quantities

Olivia wants to find out whether a substance will flourish she said she will put it in the microwave oven do you agree with her why are why not