If an element with an atomic number of 51 and an atomic mass of 121, how many neutrons does it have?

How fast must a 6.0-kg cat run to have a kinetic energy of 150 J?

Which of the following will cause an increase in gas pressure in a closed container? a. lowering the temperature b. reducing the volume c. adding more gas d. both b and c

A box accelerates at a rate of 2/m/s/s when it is pushed with 15 n of force

Examples in daily life that air has mass

A 20V battery is connected to a complex circuit with three branches. The first branch has a 10Ω light bulb and a switch in series. The second branch has a 10Ω and 20Ω light bulb in series. The third branch has only the battery. Solve the circuit.

How can you tell one element from another?

Which of the following is not an accurate statement about the attitude of teenagers when driving

the circumference of Earth's orbit is 938 million kilometres how fast does earth travel in km/h in one year

A material is said to be ductile if it

A professional soccer player succeeds in scoring a goal on 84% of his penalty kicks. assume that the success of each kick is independent.