My 1954 Kg Honda Odyssey accelerates from 1.15 m/s to 12.5 m/s. A) Determine the amount of work performed on the minivan by it's engine. B) If the acceleration occurs over a distance of 0.375 km, determine the force exerted on the minivan by it's engine. C) Calculate the net work required to bring the minivan to a stop.

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

The frequency of vibrations of a vibrating violin string is given by f = 1 2l t ρ where l is the length of the string, t is its tension, and ρ is its linear density.† (a) find the rate of change of the frequency with respect to the following. (i) the length (when t and ρ are constant) (ii) the tension (when l and ρ are constant) (iii) the linear density (when l and t are constant) (b) the pitch of a note (how high or low the note sounds) is determined by the frequency f. (the higher the frequency, the higher the pitch.) use the signs of the derivatives in part (a) to determine what happens to the pitch of a note for the following. (i) when the effective length of a string is decreased by placing a finger on the string so a shorter portion of the string vibrates df dl 0 and l is ⇒ f is ⇒ (ii) when the tension is increased by turning a tuning peg df dt 0 and t is ⇒ f is ⇒ (iii) when the linear density is increased by switching to another string df dρ 0 and ρ is ⇒ f is ⇒

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2