Un bloque de 5 kg es empujado 9 m hacia arriba sobre una rampa inclinada 35°, usando una fuerza horizontal de 80 N. Si la rapidez inicial del bloque es de 3.5 m/s hacia arriba del plano, calcule a) la energía cinética inicial del bloque; b) el trabajo realizado por la fuerza de 80 N sobre el bloque; c) el trabajo realizado por la fuerza de gravedad; d) el trabajo efectuado por la fuerza normal; e) la energía cinética final del bloque.

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:

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

gravitational energy

electrical energy

kinetic energy

ligh energy