A tumble buggy travels on the ground for 8 seconds and travels 4 meters. What<br> was its speed?

A physical system that is isolated from its environment is:

kompoz [17]

Closed

Explanation:

A physical system that is isolated from its environment is said to be a closed system.

In a closed system, energy can be exchange but matter cannot be exchanged.

A closed system sightly permits the only certain types of exchange.
These systems are usually used to control and limit the impact of the environment on a system.
Experiments can be conducted on the premises of any the interactions.

Learn more:

Momentum of an isolated system brainly.com/question/7973509

#learnwithBrainly

8 0

2 years ago

Mars had a mass of 6.38* 10^23 kg and a radius of 3,390,000meter what is the force of gravity experienced by a mars rover with a

d1i1m1o1n [39]

I hope its helps you . you can also write 1.44×10^3 it will be better

7 0

1 year ago

A spherical asteroid of average density would have a mass of 8.7×1013kg if its radius were 2.0 km.A)If you and your spacesuit ha

WITCHER [35]

A) 0.189 N

The weight of the person on the asteroid is equal to the gravitational force exerted by the asteroid on the person, at a location on the surface of the asteroid:

$F=\frac{GMm}{R^2}$

where

G is the gravitational constant

8.7×10^13 kg is the mass of the asteroid

m = 130 kg is the mass of the man

R = 2.0 km = 2000 m is the radius of the asteroid

Substituting into the equation, we find

$F=\frac{(6.67\cdot 10^{-11})(8.7\cdot 10^{13} kg)(130 kg)}{(2000 m)^2}0.189 N=$

B) 2.41 m/s

In order to orbit just above the surface of the asteroid (r=R), the centripetal force that keeps the astronaut in orbit must be equal to the gravitational force acting on the astronaut:

$\frac{GMm}{R^2}=\frac{mv^2}{R}$

where

v is the speed of the astronaut

Solving the formula for v, we find the minimum speed at which the astronaut should launch himself and then orbit the asteroid just above the surface:

$v=\sqrt{\frac{2GM}{R}}=\sqrt{\frac{2(6.67\cdot 10^{-11})(8.7\cdot 10^{13} kg)}{2000 m}}=2.41 m/s$

3 0

3 years ago

Can someone please answer this, ill give you brainliest and your getting 100 points.

Nata [24]

Answer:

Point number 3.

Explanation:

Volcanism can be studied to found out evidence of the internal structure of the Earth.

6 0

1 year ago

Read 2 more answers

Explain<br> (0) what is meant by regeneration,<br> (ii) why an analogue signal cannot be regenerated

Kamila [148]

Explanation:

<h3>1.) Regeneration is the natural process of replacing or restoring damaged or missing cells, tissues, organs, and even entire body parts to full function in plants and animals.</h3>

2.) When noise is added to analogue signals, it usually sounds like background hiss. Such noise can not be removed so the original clean signal can not be re-created or re-generated.

6 0

2 years ago

A tumble buggy travels on the ground for 8 seconds and travels 4 meters. What was its speed?