Kepler’s second law states that1) the orbits of the planets are elliptical.2) the speed of a planet’s orbit varies depending on which part of the ellipse it is occupying.3) the square of the ratio of the periods of any two planets revolving around the Sun is equal to the cube of the ratio of their average distance from the Sun.4) objects attract other objects with a force that is directly proportional to the product of their masses, and inversely proportional to the square of the distance between

The potential energy of a body with given mass and height is, P.E. = 8,820 J.

P.E. = mgh

where,

m is the mass in kilograms,

g is the acceleration due to gravity

h is the height in meters

Given data,

mass = 30 kg

height = 30m

acceleration due to gravity = 9.8 m / s²

P.E. = ?

Using formula,

P.E. = mgh

Putting values,

P.E. = 30 x 9.8 x 30

P.E. = 8,820 J

Potential energy is a form of energy that is stored but is dependent on the relative positions of different system components. Stretching or compressing a spring increases its potential energy. A steel ball has more potential energy when it is raised above the surface of the earth than when it is brought to Earth.

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Answer:

363

Explanation:

80g of kerosene was burned to raise the temperature

k = 90+273

= 363

Answer:

water evaporating and condensing, because that's the water cycle and it isnt eroding anything

Answer:

heathy, people, apple, motivational, together  

Explanation:

Answer:

Explanation:

Formula

F = m * a

Givens

F = 48 N

a = 0.35 m/s^2

m = ??

Solution

F = m * a                                        Substitute the givens

48 = m * 0.35                                Divide by 0.35

48 / 0.35 = m *0.35/0.35            

137.1 kg = mass

Answer:

B.105

Explanation:

Non-zero digits are always significant.

Zeros between significant digits are also significant.

Trailing zeros are significant only after a decimal point.

0.015 has 2 significant figures.

105 has 3 significant figures.

150 has 2 significant figures.

1.050 has 4 significant figures.

Answer:

I don't know why?? is this a homework question or a riddle?

Answer:

0.2 km/minute or 12 km/h

Explanation:

All you have to do is divide distance by time to find the speed. 1/5 km/min is the speed into which we simplify to 0.2 km/min. I then multiplied by 60(numerator and denominator) since there are 60 minutes in an hour to get 12 km/h.

The coefficient of static friction between the mass and the surface is 0.270

From the question given above, the following data were obtained:

We can obtain the coefficient of friction as illustrated below:

Frictional force (N) = coefficient of friction (μ) × normal reaction (N)

F = μN

10.6 = μ × 39.2

Divide both sides by 39.2

μ = 10.6 / 39.2

μ = 0.270

Thus, the coefficient of static friction between the mass and the floor is 0.270

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Answer:

absorbent    p = S / c

reflective         p = 2S/c

Explanation:

The moment of radiation on a surface is

          p = U / c

where U is the energy and c is the speed of light.

In the case of a fully absorbent object, the energy is completely absorbed. The energy carried by the light is given by the Poynting vector.

           p = S / c

in the case of a completely reflective surface the energy must be absorbed and remitted, therefore there is a 2-fold change in the process

           p = 2S/c

Answer:

A force vector is a representation of a force that has both magnitude and direction.

Answer:

q1: 0.5m/s2

Explanation:

Answer:100

Explanation:

#1

Yes gravity is acting downwards

#2

#3

#4

$5

No Applied force

Hello!

\(\large\boxed{F = 100N}\)

Use the equation F = m · a (Newton's Second Law) to solve. Substitute in the given values:

F = 5 · 20

F = 100N

Using Newton's second law and the universal gravitation law we find that the maximum acceleration response is

The universal law of Gravitation states that the force between two bodies is proportional to their masses and inversely proportional to the square of their distance

           F = \(G \frac{M m}{r^2}\)  

Where G is the universal gravitation constant (G = 6.67 10-11 N m²/kg²), M and m the mass of the bodies and r the distance between them

Newton's second law indicates that the force is proportional to the masses and the acceleration of the bodies

        F = m a

Where F is the force, m and a the mass and acceleration of the body     

let's substitute

         \(G \frac{Mm}{r^2}\)  = m a

         a = \(G \frac{M}{r^2}\)

In this case the acceleration is called centripetal since it corresponds to a circular motion of the Moon and the Earth.

In tables we can find the values:

Let's calculate the acceleration of the Moon around the Earth

      a₁ = 6.67 10⁻¹¹ \(\frac{5.98 \ 10^{24}}{ (3.84 \ 10^8 )^2 }\)

      a₁ = 2.71 10⁻³ m / s²

The acceleration of the Earth around the Sun  

      a₂ = 6.67 10⁻¹¹  \(\frac{1.991 \ 10^{30} }{(1.496 \ 10^{11})^2 }\)  

      a₂ = 5.93 10⁻³ m / s²

We can see that the acceleration around the Sun is twice the acceleration of the moon around the Earth

In conclusion they use Newton's second law and the universal gravitation law, we find that the maximum acceleration response is

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Currently, the magnetic south pole lies about ten degrees distant from the geographic north pole, and sits in the Arctic Ocean north of Alaska. The north end on a compass therefore currently points roughly towards Alaska and not exactly towards geographic north.

Answer:

The unit of work is joules

Force and displacement are used to calculate the work done by an object. This work is measured in the units of Joules. Thus, the correct option is A.

Work can be defined as the force that is applied on an object which shows some displacement. Examples of work done include lifting an object against the Earth's gravitational force, and driving a car up on a hill. Work is a form of energy. It is a vector quantity as it has both the direction as well as the magnitude. The standard unit of work done is the joule (J). This unit is equivalent to a newton-meter (N·m).

The nature of work done by an object can be categorized into three different classes. These classes are positive work, negative work and zero work. The nature of work done depends on the angle between the force and displacement of the object. Positive work is done if the applied force displaces the object in its direction, then the work done is known as positive work. Negative work is opposite of positive work as in this work, the applied force and displacement of the object are in opposite directions to each other and zero work is done when there is no displacement.

Therefore, the correct option is A.

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Answer:

1. Atomic number

2. element symbol

3. element name

4. atomic mass

5 and 6 are the same as the diagram above... just rewrite using data

Answer: Less than 1% of the stars that Kepler will be looking at are closer than 600 light years. Stars farther than 3,000 light years are too faint for Kepler to observe the transits needed to detect Earth-size planets.

Explanation:

Answer:

it is water

Explanation:

i took the test

Answer:

100

Explanation:

Use equation p=mv

p=(50kg)(2m/s)= 100

Answer:

False.

Explanation:

The voltage of a disconnected charged capacitor decreases when the plates are brought closer together because the capacitance is inversely proportional to the area. If the area between plates decreases, its capacitance increases and vice versa. There is direct relationship between voltage of a disconnected charged capacitor and plates. If the distance between plates decreases, the voltage of a disconnected charged capacitor is also decreases while on the other hand, if the distance between plates increases, the voltage of a disconnected charged capacitor is also increases.

Given:

• Mass of person, m = 27 kg

• Force = 432 N

Let's find the acceleration.

To find the acceleration, apply Newton's Second Law:

Where:

F is the Force

m is the mass

a is the acceleration.

Rewrite the formula for a, plug in the values of m and F, the solve:

Therefore, the acceleration is 16 m/s².

ANSWER:

16 m/s²

Vector B of the following vectors best represents the direction of the resultant electric field at point p, the center of the triangle.

A  quantity or phenomenon that has two independent properties i.e magnitude and direction is named as vector.

E = E1+ E2.

According to the bottom panel of the picture, a point charge's electric field has the formula E = kr2qr.

E =k ea2q uphill and to the right at 60, and E2 =kea2q upward and to the left at 60.

Therefore, E= E1 + E2 = kea2q[(cos60i+sin60j) + (cos60i+sin60j)] = kea2q[2(sin60j)

= 1.73kea2qj. i.e vector B

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Horizontal component , F cos θ.

Vertical component , F sin θ.

Now, as θ increases towards 90° cos θ decreases and

As θ increases towards 90° sin θ increases.

Therefore, horizontal component of F will decrease and vertical component will increase.

Hence, this is the required solution.

According to the given statement the charge Q is 6 coulomb that requires of energy to be moved through a potential difference .

Note that whenever a voltage is stated, it refers to the difference in potential between two places. Every battery, for instance, has two terminals, and its voltage seems to be the difference in potential between them.

The voltmeter is a tool used to measure potential difference. Some varieties, like voltmeters, feature a pointer on a dial, but digital displays are more common. To detect the potential difference across a circuit element, you must connect a voltmeter in parallel, unlike an ammeter.

W is work done

V is potential difference

Work done

W = 96J

V = 16

W=Q×V

Q=W÷V

Q =  96 ÷ 16

Q =  6 Coulomb.

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