Arock has a mass of 25kg. the acceleration due to gravity is 10m/s and the height of the rock is 42 m. find the potential energy of the rock

The answer is Potential energy is equal to 10500 Joules

Step by step Explanation:

1) Potential Energy is the energy that a body located at a certain height above the ground has.

2) The potential energy is expressed by the formula PE = mgh where (PE) is the potential energy (m) represents the mass, (g) represents the acceleration of gravity, and (h) represents the height.

3) Knowing this we can continue to replace the values given in the problem:

PE = (25Kg)(10m/s^2)(42m)

PE = 10500J

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

technology is the collection of techniques, skills, methods, and processes used in the the merriam-webster learner's dictionary offers a definition of the term: "the use of moreover, these technologies have become so complex that entire fields more recently, modern works of science fiction such as those by philip k.

explanation: