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
Roman55 [17]
3 years ago
5

A particular planet has a moment of inertia of 8.26 × 1036 kg⋅m2 and a mass of 6.54 × 1022 kg. Based on these values, what is th

e planet's radius? Hint: Because planets are the shape of a sphere, the moment of inertia is I = (2/5)mr2.
7.12 × 106 m
1.78 × 107 m
5.05 × 1013 m
3.16 × 1014
Physics
1 answer:
SVEN [57.7K]3 years ago
3 0

Answer: Correct answer is B = 1.776933×10^{7}

Explanation:

Given :

Moment of inertia I = 8.26×10^{36} kgm^{2}

Mass of planet m = 6.54×10^{22} kg

Also, Planet is solid sphere so that, Moment of inertia is I = \frac{2}{5} mR^{2} =0.4mR^{2}

Where R is radius of planet

Putting into calculation

We get,

I = \frac{2}{5} mR^{2}

8.26×10^{36} =  0.4×6.54×10^{22}×R^{2}

8.26×10^{14} = 2.616 R^{2}

3.15749235×10^{14} = R^{2}

R =  1.776933×10^{7}

Thus, Correct answer is B = 1.776933×10^{7}

You might be interested in
Suppose you wish to construct a motor that produces a maximum torque whose magnitude is 1.7 × 10-2 N·m. The coil of the motor ha
Len [333]

Answer:

86 turns

Explanation:

Parameters given:

Magnetic torque, τ = 1.7 * 10^(-2) Nm

Area of coil, A = 9 * 10^(-4) m²

Current in coil, I = 1.1 A

Magnetic field, B = 0.2 T

The magnetic toque is given mathematically as:

τ = N * I * A * B

Where N = number of turns

To find the number of turns, we make N subject of formula:

N = τ/(I * A * B)

Therefore:

N = (1.7 * 10^(-2)) / (1.1 * 9 * 10^(-4) * 0.2)

N = 85.85 = 86 turns (whole number)

The number of turns must be 86.

3 0
3 years ago
Nonrenewable resources are natural resources that are limited in supply and cannot be replaced as quickly as they are used up.
zysi [14]

Answer:

True

Explanation:

Nonrenewable resources ARE limited in supply. They don't get replaced at the speed they get made. For example: we pump crude oil from the ground at a rate that makes it impossible for crude oil to be replaced. Crude oil takes millions of years to produce

8 0
3 years ago
Which substances in the simulation have particles that are only atoms?
Travka [436]

All matter is made of particles; these can be single atoms or atoms chemically joined to make molecules. Using this fact, matter can be classified into three broad groups: elements, compounds and mixtures. In an element, all the atoms are of the same type. If more than one type of atom is chemically joined, then a compound has been formed. If more than one type of atom or molecule is contained in the same substance, and the particles aren't chemically joined, this is a mixture.

7 0
3 years ago
Read 2 more answers
A bulb pile is driven to the ground with a 2.5 ton hammer. The drop height is 22 ft and the volume in last batch driven is 4 cu
Stels [109]

Answer:

159.1 ton

Explanation:

The solution is shown in the attached file

Download docx
5 0
3 years ago
Read 2 more answers
Please solve this question ​
lesantik [10]

Answer:

88200 Pa

it is because

height =9m

density=1000kg/m(cube)

gravity = 9.8m/s(square)

now,

P=d×g×h

= 1000×9.8×9

=88200pa

8 0
2 years ago
Other questions:
  • A street light is at the top of a 10 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 8 ft/sec along a s
    7·1 answer
  • Why is friction important for gymnast working on parallel bars
    12·1 answer
  • You have a frustrating day and just feel like screaming; you grab a pillow to scream into. Which interaction of sound would take
    5·1 answer
  • car travels 80 meters due north in 12 seconds then the car turns around and travels 30 Mi do South in 4 seconds calculate the av
    7·1 answer
  • Select True or False for the follwing statements about electric field lines.
    5·1 answer
  • The motion sensor depends on which of the following for its operation? 1. the emission of a short burst of sound waves. 2. doppl
    14·1 answer
  • A wire is hung between two towers and has a length of 208 m. A current of 154 A exists in the wire, and the potential difference
    6·2 answers
  • Which of the following is a key component of the U.S. Space Shuttle program?
    9·2 answers
  • When you exert 75 N on a jack to lift a 6000 N car, what is the jack’s actual mechanical advantage? Show your work.
    13·1 answer
  • A block with a mass of 33.0 kg is pushed with a horizontal force of 150 N. The block moves at a constant speed across a level, r
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!