1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Cloud [144]
3 years ago
11

What is the name of the North Star?

Physics
1 answer:
meriva3 years ago
5 0
<span>Polaris might be the answer you are looking for</span>
You might be interested in
Independent practice
coldgirl [10]

Explanation:

formula: <u>Mass</u>

Density x volume

2a) m=10kg v=0.3m³

10÷0.3=33.3 kg/m

2b) m = 160 kg V=0.1m³

160÷0.1=1600 kg/m

2c) m = 220 kg V = 0.02m³

220÷0.02=11000 kg/m

A wooden post has a volume of 0.025m³ and a mass of 20kg. Calculate its density in kg/m.

density = volume ÷ mass

20÷ 0.025=800 kg/m

Challenge: A rectangular concrete slab is 0.80m long, 0.60 m wide and 0.04m thick. Calculate its volume in m³.

Formula : Length x width x height = Volume

0.80 x 0.60 x 0.04 = 0.0192m³

B) The mass of the concrete slab is 180 kg. Calculate its density in kg/m.

density = volume ÷ mass

180 ÷ 0.0192 = 9375 kg/m

4 0
2 years ago
When do dementia come about
Cerrena [4.2K]
Dementia is a brain disease that causes a decline in memory and cognitive functioning at a much more rapid rate that is expected due to normal aging. There is no known cure and no set age that dementia can occur, but roughly 10% of people will develop it at some point in their lives. It typically affects older people and about 50% of people over 85 have dementia.


6 0
3 years ago
Determine the change in electric potential energy of a system of two charged objects when a -2.1-C charged object and a -5.0-C c
elena55 [62]

Answer:

Change in electric potential energy ∆E = 365.72 kJ

Explanation:

Electric potential energy can be defined mathematically as:

E = kq1q2/r ....1

k = coulomb's constant = 9.0×10^9 N m^2/C^2

q1 = charge 1 = -2.1C

q2 = charge 2 = -5.0C

∆r = change in distance between the charges

r1 = 420km = 420000m

r2 = 160km = 160000m

From equation 1

∆E = kq1q2 (1/r2 -1/r1) ......2

Substituting the given values

∆E = 9.0×10^9 × -2.1 ×-5.0(1/160000 - 1/420000)

∆E = 94.5 × 10^9 (3.87 × 10^-6) J

∆E = 365.72 × 10^3 J

∆E = 365.72 kJ

6 0
3 years ago
Please help with these questions
lord [1]
When do you gotta turn it in?
8 0
2 years ago
Which is a benefit of using synthetic polymers, such as nylon?
alisha [4.7K]

Answer:

Synthetic polymers are lightweight

Explanation: took the test

3 0
3 years ago
Read 2 more answers
Other questions:
  • 3. A worker pushes a box across the floor to the right at a constant speed with a force of 25N. What
    6·1 answer
  • Describe the trip from your home to school using the words position, distance, displacement, and
    13·1 answer
  • The way to earn a college diploma is by?
    7·2 answers
  • What is a source of AC current
    5·1 answer
  • What is the final step in the fourth stage of technological design, after a product has been improved and approved?
    7·1 answer
  • Fruit and write your thought about it​
    6·1 answer
  • Describe the movement of the man when the resultant horizontal force is ON
    12·1 answer
  • Hey can someone please help answer this question?
    10·1 answer
  • The earth's gravity is pulling on you. Are you pulling on the earth? Explain why or why not.
    8·1 answer
  • In your words, describe how you think life as a human might be different on a world orbiting around a dying star. Think about th
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!