Calcula la fuerza que debe aplicarse al embolo mayor de un gato hidráulico que necesita levantar un auto de 1.8 toneladas, si las áreas del embolo menor y mayor son de 5cm2 y 200cm2 respectivamente. Calcula el área del embolo menor de una prensa hidráulica si se le aplica una fuerza de 70N y puede levantar un peso de 20 000N en su embolo mayor, cuya área es de 400m2

The mass of a muon is 207 times the electron mass; the average lifetime of muons at rest is 2.21 μs. in a certain experiment, muons moving through a laboratory are measured to have an average lifetime of 7.04 μs. for the moving muons, what are (a) β (b) k, and (c) p? the rest energy of the electron is 0.511 mev.

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.