Lamar writes several equations trying to better understand potential energy. h = d with an arrow to the equation w = f d and p e subscript g baseline = m g h. f subscript g baseline = mg with arrows to the f in w = f d and to p e subscript g baseline = m g h. what conclusion is best supported by lamar's work? the elastic potential energy is the same for any distance from a reference point. the gravitational potential energy equals the work needed to lift the object. the gravitational potential energy is the same for any distance from a reference point. the elastic potential energy equals the work needed to stretch the object.

The gravitational potential energy equals the work needed to lift the object.

Explanation:

here we know that

work done is given as

Potential energy is given as

force due to gravity is given as

now here if we plug in the value of distance and force in the formula of work done then we will have

so here we got

so we can concluded that

The gravitational potential energy equals the work needed to lift the object.

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:

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )