Ask question

Ask question

All categories

3 years ago

7

How many times more gravitational potential energy would the same lander have on top of a 350-m hill on Earth? It would have tim

es more gravitational potential energy

1 answer:

algol133 years ago

5 0

Answer:

6

Explanation:

Just did it.

You might be interested in

_____is the most abused of all fossil fuels <br> A.Gasoline<br> B.Coal<br> CPeat<br> D petroleum

Kisachek [45]

Coal is the answer to the question

3 0

3 years ago

A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3.00 s for the

Vladimir [108]

Answer:

Initial velocity = $29.43m/s$ b) Height it reaches = 44.145 m

Explanation:

Using the first equation of motion we have

$v=u+at$

here

v is the final velocity

u is the initial velocity

a is the acceleration of the object

t is time

When the ball reaches it's highest point it's velocity will become 0 as it will travel no further

Also the acceleration in our case is acceleration due to gravity ( $-9.8m/s^{2}$ ) as the ball moves in it's influence alone with '-' indicating downward direction

Thus applying the values we get

$0=u-(9.81)m/s^{2}\times 3\\\\u=19.43m/s$

b)

By 3rd equation of motion we have

$v^{2}-u^{2}=2gs$

here s is the distance covered

Applying the value of u that we calculated we get

$s=\frac{-u^{2}}{2g}\\\\s=\frac{-29.43^{2}}{-2\times 9.81}\\\\s=44.145m$

7 0

3 years ago

The transfer of energy by the movement of particles that are in contact with each other

jeka57 [31]

Answer: I belive that the Answer is C.) Conduction

Explanation:

3 0

3 years ago

Read 2 more answers

Explain objects in space motion. How do they move? What affects their motion?

Verizon [17]

Objects in space follow the laws or rules of physics, just like objects on Earth do. Things in space have inertia. That is, they travel in a straight line unless there is a force that makes them stop or change. The movement of things in space is influenced by gravity.

5 0

4 years ago

A spherical snowball is melting in such a way that its radius is decreasing at rate of 0.1 cm/min. At what rate is the volume of

andrew11 [14]

Answer:

$\frac{dV}{dt}=-78,4\pi \frac{cm^{3} }{min}$

Explanation:

Knowing that the volume of a sphere is V=(4/3)πr³ and $\frac{dr}{dt}=-0.1\frac{cm}{min}$

We must find $\frac{dV}{dt}=?$ when r=14cm

V=(4/3)πr³ ⇒

$\frac{dV}{dt}=\frac{4}{3}\pi3r^{2}\frac{dr}{dt}\\\frac{dV}{dt}=4\pi r^{2}(-0.1\frac{cm}{min})$

and r=14cm then

$\frac{dV}{dt}=4\pi(14cm)^{2}(-0.1\frac{cm}{min})\\\frac{dV}{dt}=4\pi196cm^{2}(-0.1\frac{cm}{min})\\\frac{dV}{dt}=-78,4\pi \frac{cm^{3} }{min}$

Note: as you can see the relationship of change of r with respect to t is negative because it is a decrease, and also its volume ratio

4 0

4 years ago