Suppose an element had an atomic number of 52. How many protons would that element have?

11. Hans and Frans are two workers being considered for a job at the UPS loading dock. Hans boasts that he can lift a 100 kg box 2.0 meters vertically, in 3.0 seconds. Frans counters with his claim of lifting a 200 kg box 5.

Which of the following is not a valid equation for describing the behavior of gases? A. (P1/V1) = (P2/V2) B. PV = nRT C. P1V1 = P2V2 D. (V1/T1) = (V2/T2)

A sprinter reaches his maximum speed in 2.6 seconds from rest with constant acceleration. He then maintains that speed and finishes the 100 yards in the overall time of 10.06 seconds. Determine his maximum speed vmax.

A universal law is a principle that is in effect everywhere at all times. Which example is likely to be a universal law? A. the force of attraction between two objects B. the model of the atom C. objects with like charges attract D.

What physical features form the boundaries of the United States?

How does a change in resistance affect the conductivity of a material? A) The lower the resistance, the worse the conductivity B) The lower the resistance, the better the conductivity C) The higher the resistance, the better the conductivity D) The

Two railroad cars, each of mass 6500 kg and traveling 80 km/h in opposite directions, collide head-on and come to rest. how much thermal energy is produced in this collision?

What is a result of using a machine?

A boy rides motorbike with velocity of 20 m/s He accelerates his motorbike to a velocity of 30 m/s for 5 second. Calculate the acceleration produced in the motorbike. [Ams 2ms

How is a star's emission spectrum used to study stars?