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
Vitek1552 [10]
3 years ago
10

A rock, initially at rest with respect to Earth and located an infinite distance away is released and accelerates toward Earth.

An observation tower is built 3 Earth-radii high to observe the rock as it plummets to Earth. Neglecting friction, the rock's speed when it hits the ground is _________ its speed at the top of the tower.
Physics
1 answer:
lianna [129]3 years ago
7 0

Answer:

the rock speed is increased

You might be interested in
Need help with physics please
bazaltina [42]

The centripetal force : F = 293.3125 N

<h3>Further explanation</h3>

Given

mass = 65 kg

v = 9.5 m/s

r = 20 m

Required

the centripetal force

Solution

Centripetal force is a force acting on objects that move in a circle in the direction toward the center of the circle  

\large {\boxed {\bold {F = \frac {mv ^ 2} {R}}}

F = centripetal force, N  

m = mass, Kg  

v = linear velocity, m / s  

r = radius, m  

Input the value :

F = 65 x 9.5² / 20

F = 293.3125 N

4 0
2 years ago
The narrator of a story
34kurt
The answer is d! I’m happy to help :)
7 0
2 years ago
Read 2 more answers
Two metal plates 4 cm long are held horizontally 3 cm apart in a vacuum, one being vertically above other. The upper plate is at
kati45 [8]

Answer:

the answer to your question is 4 cm long

Explanation:

5 0
2 years ago
NEED HELP ASAP!!!!!!!!!!!!!
love history [14]

Answer: Decreased risk of heart attack

Explanation:

thats the answer because it actually

increase rish of heart attack

Hope this helps :)

5 0
3 years ago
Read 2 more answers
How is magnetism important to our evolution?
sweet [91]
If it helps Mark Brainliest.. :)

natural magnetism of the Earth derives from its iron core. This not only provides a useful direction finder for compasses, but actually protects life on Earth by deflecting charged particles in space. The "magnetosphere" is a large region that surrounds the Earth as it moves in its orbit around the Sun. It consists of charged ions that are prevented from directly striking the surface, where they could injure living organisms and harm the environment.When solar eruptions on the Sun increase the flow of charged particles, industries such as power transmission and communication can be still be affected despite the magnetic field
4 0
2 years ago
Other questions:
  • How can a high school student have more momentum than a truck
    5·1 answer
  • A certain gas is present in a 15.0 l cylinder at 2.0 atm pressure. if the pressure is increased to 4.0 atm the volume of the gas
    15·1 answer
  • A piece of curved glass has a radius of curvature of r = 10.8 m and is used to form Newton's rings, as in the drawing. Not count
    7·2 answers
  • What is the sequence of energy transformations associated with a hydroelectric dam?
    13·2 answers
  • Which is not standing in the way of astronomers getting a good view of distant stars? A. some stars are too far away for our tel
    13·1 answer
  • Jupiter's moon Io has active volcanoes (in fact, it is the most volcanically active body in the solar system) that eject materia
    15·1 answer
  • Two resistors R1 = 3 Ω and R2 = 6 Ω are connected in parallel. What is the net resistance in the circuit?​
    13·1 answer
  • Write a short note on convection of heat<br><br>I will give brainlist ​
    12·1 answer
  • The rock falls from the distance of 15 m before it hits the water. Calculate its kinetic energy just before hitting the water. S
    7·2 answers
  • A car is being driven along a road at 25m/s when the driver suddenly notices that there is a fallen tree blocking the road 65m a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!