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2 years ago

The gravitational potential energy of an object is due to

Physics

1 answer:

ExtremeBDS [4]2 years ago

8 0

d. all of these

look at the picture to know from where we get this law with application on it

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You climb to the top of a ladder. You drop a a ball from height H, it reaches the ground with speed V if there is no air resista

olchik [2.2K]

Answer:

heymelissa its amanda i hate ms spearman

Explanation:

yuh

6 0

3 years ago

A 10 kg migratory swan cruises at 20m/s. A calculation that takes into ac-count the necessary forces shows that this motion requ

IgorC [24]

Answer:

Part A:

Distance=864000 m=864 km

Part B:

Energy Used=ΔE=8638000 Joules

Part C:

$\frac{\triangle m}{m}=0.004998=0.49985\%$

Explanation:

Given Data:

v=20m/s

Time =t=12 hours

In Secs:

Time=12*60*60=43200 secs

Solution:

Part A:

Distance = Speed**Time

Distance=v*t

Distance= 20*43200

Distance=864000 m=864 km

Part B:

Energy Used=ΔE= Energy Required-Kinetic Energy of swans

Energy Required to move= Power Required*time

Energy Required to move=200*43200=8640000 Joules

Kinetic Energy= $\frac{1}{2}mv^2$

$K.E\ of\ Swans=\frac{1}{2} *10*(20)^2=2000\ Joules$

Energy Used=ΔE=8640000 -2000

Energy Used=ΔE=8638000 Joules

Part C:

Fraction of Mass used=Δm/m

For This first calculate fraction of energy used:

Fraction of energy=ΔE/Energy required to move

ΔE is calculated in part B

Fraction of energy=8638000/8640000

Fraction of energy=0.99977

Kinetic Energy= $\frac{1}{2}mv^2$

Now, the relation between energies ratio and masses is:

$\frac{\triangle E}{E}=\frac{\triangle m}{2m}v^2$

$\frac{\triangle m}{m}=\frac{2}{v^2} *\frac{\triangle E}{E}\\\frac{\triangle m}{m}=\frac{2}{20^2} *0.99977$

$\frac{\triangle m}{m}=0.004998=0.49985\%$

3 0

3 years ago

You plan to take your hair blower to europe, where the electrical outlets put out 240 v instead of the 120 v seen in the united

Eddi Din [679]

P = U × I
I = P / U = 1600W / 120V = 13.4A
P = 240V × 13.4A = 3216W

If your hair blower isnt rated for 220- 230V(this is the voltage in EU) you are most likely going to burn it.

3 0

3 years ago

Energy has many different forms: ____________ energy is the energy of motion, for every moving object and living thing; ________

jok3333 [9.3K]

Answer:

1.kinetic

2.potential

3.directly

4.mass

6 0

3 years ago

Most of the symbols used to indicate elements are from an elements name in which language

antiseptic1488 [7]

My bet guess is probably Latin

4 0

3 years ago

Read 2 more answers