Two particles with the same charges are held a fixed distance apart. the charges are equal in magnitude and they exert a force on each other. half of one of the charges is transferred to the other charge and the distance is unchanged. what happens to the force exerted by one charge on the other charge? the force is half as large the force is uncharged the force is twice as large the force is one fourth as large the force is three fourths as large

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

How is the ideal mechanical advantage of a wheel and axle calculated?

2select the correct answer. javed suffers from a severe food allergy. which device should javed always carry? a. inhaler b. epi pen c. nebulizer d. insulin pen