Cooper should have paid more attention on verifying the source of the article before posting it. Without verifying the article, there are chances that your friends within your social media community will criticize you for posting something from a fiction-writing site. Assuming that Cooper's purpose in posting or sharing it online was to be informative, then he'll have to verify the the article if it's true or not.
Answer:
h = 8.588 m
Explanation:
Given:
Mass of hockey puck: m = 200 g = 0.2 K
g
Angle of incline: θ = 30º (with respect to horizontal)
Coefficient of static and kinetic friction between the puck and ramp:
μ
s = 0.4 and μk = 0.3
initial speed:
v = 3.5 m
/s
Let h be the vertical height reached by the puck, above the ground. This corresponds to a distance of
d = h
*sin 30º = 2
*h
along the incline. As the puck is moving, only kinetic friction comes into play as it climbs up the incline. Let N be the normal reaction exerted by the metal ramp on the ball. Then,
N = m*g
*cos θ = 0.2
*9.8
1*cos 30
º = 1.6991 N
Therefore, kinetic friction acting on the puck is:
F
k = μ
k
*N = 0.3
*1.6974 = 0.50974 N
From work energy theorem, the change in kinetic energy should equal the work done by friction and gravity. Therefore,
0.5* 0.2
*16² = 0.50974
*2h + 0.2*9.81*h
⇒ h = 8.588 m
Answer:
For designing a database suitable for a University registrar, the following information is included which are Information about Students, Information about Departments, Information about Professors, Information about courses, Student Grades,TA's for a course, Department offering different courses.
In creating the database registrar system the following values are defined such as Entity, Attributes of entities,The relationship among entities.
Explanation:
Solution
The following requirements are for designing of database for a University registrar.
The Database Schema includes the following:
- Information about Students
- Information about Departments.
- Information about Professors.
- Information about courses.
- Student Grades.
- TA's for a course.
- Department offering different courses.
Now,
For the design of Database for Registrar System we need to define the following:
(1)Entity: Student, Course, Instructor, Course offering.
(2) Attributes of Entities:
- Student entity has Sid, name, program as its attributes
- Course has Course_n, title, credits, and syllabus as its attributes
- Instructor has iid ,name ,dept, title as its attributes
- Course offering has section_no ,time, room, year,semester as its attributes
(3) Relationship among various entities:
- Enrolls
- Teaches
- © is offered
Note: kindly find an attached copy of the E-R Diagram for University Registrar below, and his diagram shows student entity enrolls various courses which can be having teaches relationship with instructor. Course is being offered by relationship is offered by course offering.
Answer:
Thank you for the points<33
Answer:
It depends on the features of the Calculator but most mobile phones are computers.
Explanation:
A computer is an electronic device that can accept data (Both can), process the data (both can), produce the results of the processed data (both can) and store both result and initial data (some calculators can, some cannot but most mobile phones can).
In my opinion, they are computers but that's dependent on their features especially storage.