Pedro is building a model motor. he would like the motor to be more powerful. which of the following would best him increase the power of the motor? a. increasing the amount of friction in the motor b. increasing the speed at which the motor does work c. decreasing the speed at which the motor does work d. reducing the amount of force that the motor produces

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes. these cyclotrons typically accelerate h- (the hydride ion, which has one proton and two electrons) to an energy of 5 mev to 20 mev. this ion has a mass very close to that of a proton because the electron mass is negligible—about 1 2000 of the proton’s mass. a typical magnetic field in such cyclotrons is 1.9 t. (a) what is the speed of a 5.0-mev h-? (b) if the h- has energy 5.0 mev and b = 1.9 t, what is the radius of this ion’s circular orbit?

Refer to your lab guide and review the data in table b to complete each statement. the mass of g1 + g2 after the collision kg. the velocity of g1 + g2 after the collision m/s. the momentum of the combined gliders after the collision kg · m/s.