4. A block that has a mass of 750 kg is suspended by a rope from the end of a construction crane. The crane is moving the block upward with an acceleration of 2.5 m/s²

a) Draw the free-body diagram of this situation. Label all of the forces with the appropriate
symbol. Be sure that the lengths of your arrows accurately represent the magnitudes of the forces.

b) What is the weight (Fg) of the block? Show your work. Label the weight in part a with the
magnitude you calculated here.

c) What is the net force acting on the block? Show your work.

a. Law of Constant Composition, Law of Multiple Proportions, Law of Conservation of Mass Alpha particles are scattered at a variety of angles (over 90 degrees) when bombarded at gold foil.

Explanation:

Which of the following supports the claim that the atom is like a solid positive cookie with negative electrons embedded within it? (This model is known as the Plum Pudding Model of the atom, and is illustrated to the right).

a. Law of Constant Composition, Law of Multiple Proportions, Law of Conservation of Mass Alpha particles are scattered at a variety of angles (over 90 degrees) when bombarded at gold foil.

b. When light from hydrogen emissions passes through a diffracting grating, there are distinct bands of color.

c. The Cathode Ray Tube experiment, in which the ray was attracted to the south pole of the magnet.

the plumbudding model of the atom was postulated by  JJ Thompson and plum pudding model. . ... Thomson had discovered that atoms are composite objects, made of pieces with positive and negative charge, and that the negatively charged electrons within the atom were very small compared to the entire atom.

so a. correctly typifies the thompson model of the atom