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
nikdorinn [45]
3 years ago
11

Why does the moon appear to change shape?

Physics
1 answer:
olasank [31]3 years ago
8 0

Answer: The reason the moon appears to change is because

B: It moves closer and farther away from the earth in a yearly pattern.

Explanation: The Moon appears to change shape because we see different amounts of the lit part as the Moon orbits Earth.

You might be interested in
At a location, rainwater runs off the face of a cliff that is 15 meters high. How is the face of the cliff likely to change over
stiv31 [10]
Weathering by water would cut its top deeper than the middle
5 0
3 years ago
Global Precipitation Measurement (GPM) is a tool scientists use to forecast weather. Which statements describe GPM? Select three
lyudmila [28]

Answer:

B.It is a satellite that collects data about rain and snow

C.Its orbit covers 90 percent of Earth’s surface

F.The sensors measure microwaves

5 0
3 years ago
A ball having mass 2 kg is connected by a string of length 2 m to a pivot point and held in place in a vertical position. A cons
Virty [35]

Complete Question

A ball having mass 2 kg is connected by a string of length 2 m to a pivot point and held in place in a vertical position. A constant wind force of magnitude 13.2 N blows from left to right. Pivot Pivot F F (a) (b) H m m L L If the mass is released from the vertical position, what maximum height above its initial position will it attain? Assume that the string does not break in the process. The acceleration of gravity is 9.8 m/s 2 . Answer in units of m.What will be the equilibrium height of the mass?

Answer:

H_m=1.65m

H_E=1.16307m

Explanation:

From the question we are told that

Mass of ball M=2kg

Length of string L= 2m

Wind force F=13.2N

Generally the equation for \angle \theta is mathematically given as

tan\theta=\frac{F}{mg}

\theta=tan^-^1\frac{F}{mg}

\theta=tan^-^1\frac{13.2}{2*2}

\theta=73.14\textdegree

Max angle =2*\theta= 2*73.14=>146.28\textdegree

Generally the equation for max Height H_m is mathematically given as

H_m=L(1-cos146.28)

H_m=0.9(1+0.8318)

H_m=1.65m

Generally the equation for Equilibrium Height H_E is mathematically given as

H_E=L(1-cos73.14)

H_E=0.9(1+0.2923)

H_E=1.16307m

8 0
3 years ago
You stand on a merry-go-round which is spinning at f = 0.25 revolutions per second. You are R = 200 cm from the center. (a) Find
wariber [46]

Answer:

a) ω = 9.86 rad/s

b) ac = 194. 4 m/s²

c) minimum coefficient of static friction, µs = 19.8

Explanation:

a) angular speed, ω = 2πf, where f is frequency of revolution

1 rps = 6.283 rad/s, π = 3.142

ω = 2 * 3.14 * 0.25 * 6.28

ω = 9.86 rad/s

b) centripetal acceleration, a = rω²

where r is radius in meters; r = 200 cm or 2 m

a = 2 * 9.86²

a = 194. 4 m/s²

c) µs = frictional force/ normal force

frictional force = centripetal force = ma; where a is centripetal acceleration

normal force = mg; where g = 9.8 m/s²

µs = ma/mg = a/g

µs = 194.4 ms⁻²/9.8 ms⁻²

c) minimum coefficient of static friction, µs = 19.8

5 0
3 years ago
~~~~NEED HELP ASAP~~~~
maksim [4K]

the above three pictures may help you

go through the attachments

4 0
3 years ago
Read 2 more answers
Other questions:
  • Are the Sun's rays like mechanical or electromagnetic waves
    8·2 answers
  • Two rods are made from materials that have different Young's moduli. The rods are constructed to have the same length and same c
    9·1 answer
  • Is it ok as a headline story
    7·2 answers
  • 26. The equation E=hf describes the energy of each photon in a beam of light. If Planck’s constant, h, were larger, would photon
    13·1 answer
  • Which is a characteristic of projectile motion?
    5·2 answers
  • Which statement is a scientific law?
    8·2 answers
  • A nuetral atom has no overall charge. Explain this in terms of its particles.
    10·1 answer
  • The human eye can readily detect wavelengths from about 400 nm to 700 nm. part a if white light illuminates a diffraction gratin
    10·1 answer
  • Prepare a summary to explain how much the final birds varied from the original birds after 1 million years of natural selection.
    15·1 answer
  • A student plans an investigation to determine whether an object has a positive charge, a negative charge, or is electrically neu
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!