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3 years ago

What is the relation between height and energy?

1 answer:

4 0

Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational potential energy. A tripling of the height will result in a tripling of the gravitational potential energy.

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In Hooke's law, Fspring=kΔx , what does the Fspring stand for?

Mrrafil [7]

Answer:

The amount of force acting on the spring.

Explanation:

Here, Fspring= kΔx is a equation denoting the amount of force acting on the spring.

where, k = spring constant.

Δx= change in the length of the spring.

so, for every Δx change in spring length, kΔx force acts on the spring.

6 0

3 years ago

Read 2 more answers

At the end of the passage, Sarah says to Emma, “You’re not the only one with tricks up your sleeves.” Explain what Sarah means b

IrinaK [193]

Answer:

Sarah plans to use trickery and cunning to get back at Emma. Sarah thinks she is smarter than Emma.

Explanation:

i think this is right i dont know tho

6 0

3 years ago

In April 1974, Steve Prefontaine completed a 10 km race in a time of 27 min, 43.6 s. Suppose "Pre" was at the 8.13 km mark at a

SOVA2 [1]

Answer: $0.084 m/s^2$

Explanation:

Given

Total time=27 min 43.6 s=1663.6 s

total distance=10 km

Initial distance $d_1=8.13 km$

time taken=25 min =1500 s

initial speed $v_1=\frac{8.13\times 1000}{25\times 60}=5.6 m/s$

after 8.13 km mark steve started to accelerate

speed after 60 s

$v_2=v_1+at$

$v_2=5.6+a\times 60$

distance traveled in 60 sec

$d_2=v_1\times 60+\frac{a60^2}{2}$

$d_2=336+1800 a$

time taken in last part of journey

$t_3=1663.6-1560=103.6 s$

distance traveled in this time

$d_3=v_2\times t_3$

$d_3=\left ( 5.6+a\times 60\right )103.6$

and total distance $=d_1+d_2+d_3$

$10000=8.13\times 1000+336+1800 a+\left ( 5.6+a\times 60\right )103.6$

$1870=336+1800 a+\left ( 5.6+a\times 60\right )103.6$

$a=0.084 m/s^2$

5 0

4 years ago

3. If I have a block of solid gold and I continually add energy to it, will it continually increase in

zloy xaker [14]

The gold was heated at rates too fast for the electrons absorbing the light energy to collide with surrounding atoms and lose energy.

7 0

3 years ago

The movement of Earth's lithosphere is caused by convection within the ___ layer of the earth.

Elena-2011 [213]

Answer:

Mantle layer

Explanation:

The convection of the mantle layer is when energy in the form of heat is transferred from the interior of the earth to the top of the planet, creating convection currents.

This convection in the mantle causes movements in the earth's tectonic plates, which are found in the lithosphere, so the <u>movement of Eath's lithosphere is caused by convection within the mantle layer on the earth</u>. This plate movements can cause earthquakes or volcanic eruptions.

5 0

4 years ago

Read 2 more answers