chintusehgal122

1. Differentiate between an attribute and an entity.

For Beginning Java,

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Write a program that ask the user to enter a list of positive scores until the user enters a negative score to terminate the input.  You need to store these scores in an array.   You can assume the maximum number of scores the user may enter is 70.  However, you need to keep track of the actual number of scores entered.  Write 2 methods:

1. calculateAverage(): this method takes the list of scores and return the average score.

2. countPerfectScores(): this method takes the list of scores and return the number of perfect scores (100).

The main program reads the input and calls these methods and print the results.

Please make sure you write a comment line to document what your method does."

Imagine you are riding on a train. Which object will appear to be stationary from the train seat?

A. A poster on the train

B. A tree outside

C. A building outside

D. A passenger walking down the train aisle

A projectile of mass 0.25 kg moving at 24.0 m/s collides with and sticks to a 1.75-kg block

that is connected to a spring for which k = 40.0 N/m, as in the figure below. The block is

initially on a frictionless part of a horizontal surface but starts to slide on a rough section immediately after the collision. If the maximum compression of the spring is 0.5 m, what is the force of friction on the block?

I need to show all work