Question 2

which components of the atom have a positive charge?

protons

electrons

neutrons

all components have a positive charge.

question 3

which component of the atom has the least mass?

protons

electrons

neutrons

all are the same size.

question 4

the identity of an element depends on the number of

protons in the atom.

electrons in the atom.

neutrons in the atom.

protons and neutrons in the nucleus.

question 5

what did rutherford contribute to the model of the atom?

the electron

the nucleus

the neutron

the proton

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four

Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.

Which change would make the diagram correct?