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
guajiro [1.7K]
3 years ago
13

PLS HELP!!!- The moon rotates around the Earth every 28 days. What is the frequency of the moon’s revolution?

Physics
1 answer:
Naily [24]3 years ago
6 0

Answer: the frequency is every 27.322 days

You might be interested in
Please I really need this !! Potassium loses electrons when it reacts with oxygen. Which statement is true of potassium in this
katrin [286]
D. It oxidises /////
8 0
2 years ago
Read 2 more answers
Calculate the GPE of a rock with a mass of 55kg on a cliff that is 27m high
GaryK [48]

Answer:

<em>P=mgh</em>

<em>P=mghm=55</em>

<em>P=mghm=55g=9.8 or ~10</em>

<em>P=mghm=55g=9.8 or ~10h=27</em>

Explanation:

<em>hope</em><em> it</em><em> will</em><em> help</em><em> you</em><em> have</em><em> a</em><em> great</em><em> day</em><em> bye</em><em> and</em><em> Mark</em><em> brainlist</em><em> if</em><em> the</em><em> answer</em><em> is</em><em> correct</em>

<em>kai6417</em>

<em> </em><em>#</em><em>c</em><em>arry </em><em>on </em><em>learning</em>

4 0
2 years ago
2. What is equal to the kinetic energy of a car with a mass of 0.5t (tonne) if it travels
GalinKa [24]

Answer:

7.14kg/h

Explanation:

=500kg/70h

=7.14kg/h

7 0
2 years ago
An airplane flies in a loop (a circular path in a vertical plane) of radius 160 m . The pilot's head always points toward the ce
notka56 [123]

Answer:

a) 39.6 m/s b) 4123 N

Explanation:

a) At the top of the loop, all of the forces point downwards (force of gravity and normal force).

Fnet=ma

ma=m(v^2/R) (centripetal acceleration)

mg=m(v^2/R)

m cancels out (this is why pilot feels weightless) so,

g=(v^2/R)

9.8 m/s^2 = v^2/160 m

v^2=1568 m^2/s^2

v=39.6 m/s

b) At the bottom of the loop, the normal force and the force of gravity point in opposite directions. The normal force is the weight felt.

Convert 300 km/hr to m/s

300 km/hr=83.3 m/s

Convert pilot's weight into mass:

760 N = 77.55 kg

Fnet=ma

n-mg=m(v^2/R)

n=(77.55 kg)(((83.3 m/s)^2)/160 m)+(77.55 kg)(9.8 m/s^2)

n=3363.2 N+760 N=4123 N

5 0
2 years ago
What is the electric current measured in
cluponka [151]

An ampere (AM-pir), or amp

6 0
2 years ago
Other questions:
  • What is the speed of sound in dry air at 0°C? A. 316 meters/second B. 331 meters/second C. 346 meters/second D. 373 meters/secon
    14·2 answers
  • How does weight change as the gravitational acceleration changes and why?
    5·1 answer
  • A 205 kg log is pulled up a ramp by means of a rope that
    12·1 answer
  • . You are sitting on a beach watching the waves roll in. In 12 seconds, 6 waves roll by. What is the period of the waves (7)? Wh
    9·1 answer
  • 20 points plz help i dont really understand how to do this
    13·1 answer
  • How do solar systems, galaxies, and the universe show different frames of reference about space?
    13·1 answer
  • What are 2 laws of reflection
    6·2 answers
  • The insulating material placed between the conducting plates of a capacitor is a(n) ?
    14·2 answers
  • The Newton is the SI unit for ____.<br> temperature<br> mass<br> weight<br> density
    15·1 answer
  • When you get to the snow, you grab a handful to take back to the beach. However, by the time you get there, the snow has disappe
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!