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
REY [17]
3 years ago
10

An iron ball weighs 80 N on the surface

Physics
1 answer:
Degger [83]3 years ago
7 0

Answer:

2√5N will be the weight.

Explanation:

You might be interested in
Consider an isolated system, by which we mean a system free of external forces. If the sum of the particle energies in the syste
Airida [17]

Answer:

The system's potential energy is -147 J.

Explanation:

Given that,

Energy = 147 J

We know that,

System is isolated and it is free from external forces.

So, the work done by the external forces on the system should be equal to zero.

W=0

We need to calculate the system's potential energy

Using thermodynamics first equation

\Delta U=W-\Delta E

Put the value into the formula

\Delta U=0-147

\Delta U=-147\ J

Hence, The system's potential energy is -147 J.

5 0
3 years ago
Based on the table above, _______ planets are made of the same things as _______ moons.
wolverine [178]

Answer:

b

Explanation:

3 0
3 years ago
State the laws of vibration of a stringed Instrument​
olchik [2.2K]
If the length and linear density are constant, the frequency is directly proportional to the square root of the tension.
7 0
3 years ago
A wildlife researcher is tracking a flock of geese. The geese fly 4.0 km due west, then turn toward the north by 40º and fly ano
Kobotan [32]

Wildlife researcher starts from a and then reaches b, he turns towards north 40 degree to move towards c.

Total displacement is ac

Total horizontal displacement = 4+4 cos40 =7.06 km

Total vertical displacement = 4 sin40 =2.57 km

Total displacement = \sqrt{7.06^2+2.57^2} = 7.51 km

7 0
3 years ago
A hiker walks 11 km due north from camp and then turns and walks 11 km due east. What is the magnitude of the displacement (on a
sattari [20]

Answer:

16 km

Explanation:

Drawing a right triangle to model the problem helps. I started by drawing the lines of the triangle to model the hiker's journey- a vertical straight line for 11 km north and then a horizontal line connected to the top of it for 11 km east; I then drew the hypothenuse to connect the two lines.

The hypothenuse is what we have to solve for, so we will use the Pythagorean Theorem, a^2 + b^2 = c^2. Since both distances are 11 km both a and b in the equation are 11.

11^2 + 11^2 = c^2

121 + 121 = c^2

242 = c^2

c = 15.56

Rounding the answer makes it 16 km for the hiker's magnitude of displacement.

5 0
3 years ago
Other questions:
  • I a liter jar contains 0.5 moles of gas at a pressure of 2 ATM what is the temperature of the gas
    15·1 answer
  • A block of ice with mass 5.50 kg is initially at rest on a frictionless, horizontal surface. A worker then applies a horizontal
    14·1 answer
  • Magma fills the gap between plates at ______ boundaries?
    10·1 answer
  • What type of rock this is
    8·1 answer
  • How large is theta? Please help!!!!
    10·1 answer
  • How does Earth's rotation affect our view of stars
    11·1 answer
  • For any planet, if the planet were to shrink, but have constant mass, what would happen to the value of gravity acceleration (g)
    5·1 answer
  • [1] The assembly starts from rest and reaches an angular speed of 150 rev/min under the action of a 20-N force T applied to the
    7·2 answers
  • Which of the following is a result of a limiting factor in an ecosystem?
    10·2 answers
  • Is 1 milliliter/second a small or large flow? Why?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!