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3 years ago

Eric drops a 2.20 kg water balloon that falls a distance of 45.08 m off the top of a

Physics

1 answer:

Marianna [84]3 years ago

4 0

Answer:

972 J

Explanation:

At the bottom, all the gravitational potential energy was converted into kinetic energy. If you calculate the GPE, its value will be the same that the KE at the bottom. The GPE can be calculated this way:

GPE = mass×gravity×heigth

GPE = 2.2×9.8×45.08 ≈ 972

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The innermost satellite of jupiter orbits the planet with a radius of 422 × 103 km and a period of 1.77 days. what is the mass o

FinnZ [79.3K]

The mass of Jupitar is obtained from the calculations as 5.8 * 10^-14 Kg.

<h3>What is the mass of Jupitar?</h3>

There are nine planets in the solar system and the sun lies at the enter of our solar system. This is the heliocentric model of the solar system.

Given that;

T^2 = GMr^3/4π

T = period

G = gravitational constant

r = radius

M = mass of Jupitar

Now;

1 day = 86400 seconds

1.77 days = 1.77 days * 86400 seconds/1 day

= 152928 seconds

Making M the subject of the formula;

M =4πT^2/Gr^3

M = 4 * 3.142 * (152928)^2/6.67 × 10^-11 * (422 × 10^9)^3

M = 2.9 * 10^11/5.0 * 10^24

M = 5.8 * 10^-14 Kg

Learn more about mass of a planet:brainly.com/question/13851553

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5 0

2 years ago

A 0.5kg pair of shoes weigh 0.3N on Pluto, what is the pull of gravity there?

lara [203]

Answer:

g= 0.6 m/s2

Explanation:

F = Mg

0.3 = 0.5g

g= 0.3/0.5

7 0

3 years ago

A cleaner pushes a 4.50-kg laundry cart in such a way that the net external force on it is 60.0 N. Calculate the magnitude of it

liq [111]

Answer:

The acceleration of the laundry cart is 13.3 m/s²

Explanation:

Hi there!

According to Newton's second law, the sum of all forces acting on an object in a given direction is equal to the mass of the object times its acceleration in that direction:

∑F = m · a

Where:

∑F = net force acting on the cart.

m = mass of the cart.

a = acceleration.

Then, solving this equation for the acceleration:

∑F / m = a

60.0 N / 4.50 kg = a

a = 13.3 m/s²

The acceleration of the laundry cart is 13.3 m/s²

5 0

3 years ago

Read 2 more answers

n order better to map the surface features of the Moon, a 361 kg361 kg imaging satellite is put into circular orbit around the M

ollegr [7]

Answer:

Explanation:

Mass of satellite

M_s = 361 kg

Distance of satellite from moon

h = 147 km = 147,000m

Radius of the moon is

R_m = 1740 km = 1740,000m

Mass of the moon is

M_m = 7.36 × 10²² kg.

The kinetic energy is equal to the potential energy of the body to the surface of the moon from the conservation of energy.

K.E = P.E = mgh

Gravity on moon is g = 1.62 m/s²

K.E = 361 × 1.62 × 147,000

K.E = 8.597 × 10^7 J.

B. The gravitational potential energy can be calculated using

U = G•M_s × M_m (1/R_s - 1 / R)

R is the total distance from the centre of the moon to the satellite

R = h + R_m = 147 + 1740 = 1887km

R = 1,887,000 m

U = 6.67 × 10^-11 × 361 × 7.36 × 10²² (1/1,740,000 - 1/1,887,000)

U = 6.67 × 10^-11 × 361 × 7.36 × 10²² × 4.48 × 10^-8

U = 7.93 × 10^7 J

Then,

The total energy becomes

E = K.E + U

E= 8.597 × 10^7 + 7.93 × 10^7 J

E = 1.653 × 10^8 J

3 0

4 years ago

Six Resistors Are Connected As Shown In Fig. 2.24. If A Battery Having An E.M.F. Of 24 Volts And Internal Resistance Of 1 S2 Is

solmaris [256]

(I) The Current From The Battery is 3A.

(Ii) P.D. across 8 ohm and p.d across 4 ohm is 12V and 3V respectively.

(Iii) The Current Taken From The Battery If A Conductor Of Negligible Resistance Is Connected In Parallel With 8Ω is 6A

<h3>What is current?</h3>

The current is the stream of charges which flow inside the conductors when connected across the end of voltage.

From the Ohm's law, V =IR

R = V/I

Here, R is the proportionality constant.

The resistance 4Ω and 2Ω are in series, So their equivalent is 4+2 =6Ω.

The 6Ω and 6Ω are in parallel, so their equivalent is 6x6/6+6 = 3Ω.

The 3Ω and 5Ω are in series, so their equivalent is 3 +5 = 8Ω.

The 8Ω and 8Ω are in parallel, so their equivalent is 8x8/8+8 = 4Ω.

The 4Ω and 3Ω are in series, so their equivalent is 4 +3 = 7Ω

The 7Ω and 1Ω are in series, so their equivalent is 7+1 =8Ω

So, the total equivalent resistance is 8Ω.

The current from the battery is I =V/Req

I = 24/8 = 3A

Thus, the current from the battery is 3A.

II) Applying the mesh analysis in three loops, we have

-24 +1 i1 +3i1 +8(i1-i2) =0

12 i1 -8i2 =24..................(1)

5 i2 +6(i2 - i3) +8(i2 -i1) = 0

-8 i1 +19 i2 -6 i3 =0........................(2)

2 i3 +4 i3 +6( i3 - i2) =0

-6 i2 +12 i3 =0...................(3)

On solving these equations, we get

i1 = 3A

i2 = 1.5A

i3 = 0.75A

p.d across 8 ohm = V8 =(i1 - i2) x 8 = 12V

p.d across 4 ohm = V4 = i3 x 4 = 3V

Thus, the p.d across 8 ohm and p.d across 4 ohm is 12V and 3V respectively.

iii)The resistance 2 and 4 ohm are in series, them equivalent is 2 +4 =- 6 ohm

The 6 and 6 ohm are in parallel, so their equivalent is 6x6/6+6 = 3 ohm

The 3 and 5 ohm are in series, so their equivalent is 3 +5 = 8 ohm.

Now 8 ohm is in parallel with a short circuit path. Whenever a short circuit appears , current will flow through it. So resistance cant be taken into consideration.

Then, Req = 3+1 ohm = 4 ohm

The current flow will be

I = 24/4 = 6 A.

Thus, The Current Taken From The Battery If A Conductor Of Negligible Resistance Is Connected In Parallel With 8 ohm is 6A.

Learn more about current.

brainly.com/question/10677063

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3 0

2 years ago