How long does it take for the earth to make this trip

In each case, three charged particles are fixed in place at the vertices of an equilateral triangle. The triangles are all the s

spayn [35]

Answer:

hello your question is incomplete attached below is the complete question

answer : $F_{E} > F_{F} > F_{A} = F_{B} > F_{C} =F_{D}$

Explanation:

The explanation behind the reasoning is attached below

Ranking the magnitude of the net electric force on the lower-left particle from the greatest to the least

$F_{E} > F_{F} > F_{A} = F_{B} > F_{C} =F_{D}$

5 0

3 years ago

Three kids are riding on a snow sled traveling horizontally without friction at 19.8 m/s. The masses of Kid A, B, and C are 42.8

Kamila [148]

Answer:

34.6 m/s

Explanation:

From conservation of momentum, the sum of initial and final momentum are equal. Momentum is a product of mass and velocity. Initial mass will be 42.8+31.5+25.9=100.2 kg

Final mass will be 31.5+25.9=57.4 kg

From formula of momentum

M1v1=m2v2

Making v2 the subject of the formula then

$V2=\frac {M1v1}{m2}$

Substitute 100.2 kg for M1, 19.8 m/s fkr v1 and 57.4 kg for m2 then

$V2=\frac {100.2 kg\times 19.8 m/s}{57.4 kg}=34.56376 m/s\approx 34.6 m/s$

4 0

4 years ago

The blades of a ceiling fan starting from rest reach an angular velocity of 22 rad/s

andre [41]

Answer:

moment of inertia=1.4368kg-m^2

Explanation:

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7 0

3 years ago

What is an example illustrating gravitational potential energy transforming into kinetic energy?

Bess [88]

Answer:

A. a hammer dropped off a roof accelerates as it falls.

Explanation:

The example that illustrates gravitational potential energy transforming into kinetic energy is a hammer dropped off a roof accelerating as it falls.

Gravitational potential energy is the energy due to the position of a body.

A hammer held up at roof level has a measure of gravitational potential energy.

As it drops and begins to accelerate, the energy is converted to kinetic energy. Kinetic energy is the energy due to the motion of a body.

The acceleration due to gravity causes the body to move.

So, the gravitational potential energy is converted to kinetic energy.

7 0

3 years ago

Why is there a minimum mass for an object to become a star? smaller objects cannot be detected from earth. smaller objects canno

Julli [10]

Answer:

1. smaller objects cannot generate enough pressure to start hydrogen fusion.

2. 10,000,000

Explanation:

1. Stars are born in stellar nurseries known as nebula. A nebula is cloud of dust and gases. The disk of dust and gases when spins and gathers more and more mass, the temperature and pressure rises. If sufficient mass is gathered and right temperature and pressure is achieved fusion reaction starts and a star is born. Thus, smaller objects cannot generate enough pressure to start hydrogen fusion.

2. the core of a star must reach a temperature of <u>10,000,000</u> degrees Celsius for hydrogen fusion to begin.

Hydrogen fusion reaction in sun is:

$_1^1\textrm{H}+_1^1\textrm{H}\rightarrow 1^2\textrm{H}+_{+1}^0\textrm{e}+\text{energy}\\\\_1^2\textrm{H}+_1^1\textrm{H}\rightarrow 2^3\textrm{He}+\text{energy}\\\\_2^3\textrm{He}+_1^1\textrm{H}\rightarrow _2^4\textrm{He}+_{+1}^0\textrm{e}+\text{energy}$

Overall reaction for the above series of reactions is given by:

$4_1^1\textrm{H}\rightarrow _2^4\textrm{He}+2_{+1}^0\textrm{e}+\text{energy}$

3 0

3 years ago

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