show that vector a + vector b = vector b + vector a.

Answer:

Kepler's three laws of planetary motion can be stated as follows: (1) All planets move about the Sun in elliptical orbits, having the Sun as one of the foci. ... (3) The squares of the sidereal periods (of revolution) of the planets are directly proportional to the cubes of their mean distances from the Sun.

Answer:

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Explanation:

.

Answer:

The length of the arrow tells you the size of the quantity in the vector diagram.

The direction of the arrow simply tells you the direction

Answer and Explanation:

A vector in this sense is a thing that has both magnitude (length) and direction.

Say you're walking at a speed of 5 miles per hour. If you keep walking in a straight line, then in two hours you will have walked 10 miles.

This doesn't give any information about where you started or any information about where you ended up after those 2 hours.

This is because "speed" is a scalar. It's a number with no associated geometry. It's just a magnitude. It's the magnitude of velocity.

Velocity is a vector.

Look on a map at where you are right now. Call that the center of the circle. Draw the circle with a 10 mile radius around where you are now.

The length of the arrow represents all of the possible places you could be after a two hour walk.

Which direction the arrow was pointing is what allows your friends to meet you there without checking along a ~63 mile path to find you or searching ~314 square miles to find you if you slowed down or stopped off along the way.

Answer:

I feel that people hurt the land and are destroying. I think they aren't using the land for the right reasons.

the answer for 0.429m to mm is 429

Answer:

0.429m=429 mm

Explanation:

Since there are 1,000 millimeters per meter, you need to multiply by 1,000 to convert from meters to millimeters.

[tex] \large \mathfrak{Solution : }[/tex]

Capicity of the septic tank is :

(i) capicity = 24 m³

(ii) capicity = 24 × 1000000 = 24000000 litres (cm³)

Answer:

(1)

H² = B² × L²

H² = (9.2)² × (5.2)²

H² = 84.64 × 27.04

H² = 2288.6656

H = √ 2288.6656

H = 47.84

Answer:

Use Pythagorean theorem

19) A² + B² = C²

5.2² + 9.2² = C²

C = √111.68

C = 10.567875...

C ≈ 10.6

21) A² + B² = C²

B² = C² - A²

B² = 7.2² - 5.3²

B = √23.75

B = 4.873397...

B ≈ 4.9

A physical change is a change affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.

Answer:

0.84 s

Explanation:

Step 1

Given information:

Mass of the ice (m) = 2.0 kg

Heat transfer rate (Q/T) = 793.0 kW

Latent heat of fusion of ice (Lf) = 334 kJ/kg

[tex] \frac{Q}{T} = \frac{mLf}{T} [/tex]

Substituting the corresponding values we have:

[tex]793.0 kW= \frac{2.0kg(334 kJ/kg)}{T} \\ T = \frac{2.0kg(334 kJ/kg)}{793.0kW} = \frac{668kJ}{793kW} \\ = 0.84s[/tex]

Answer:

3600m/hr is the speed of the cat

Answer:

A

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Answer:

Explanation:

Givens

vi = 50 m/s

vf = 0

a = - 9.81

t = ?

Formula

t = (vf - vi)/a

Solution

t = (0 - 50)/-9.81

t = 5.097

Notice that a is made into a minus. It does not mean subtract. It means that the direction of the projectile and gravity must go in opposite directions. You will find that direction is a critically important consideration in physics.

Answer:

It'd take it 5.10 seconds

Explanation:

At the top of the launch, it is maximum height, h

formular derivation :

At maximum height, final velocity, v is zero

From first newtons equation:

[tex]{ \sf{v = u + gt}}[/tex]

v is the final velocity

u is the initial velocity

g is acceleration due to gravity

t is the time taken

but v is zero:

[tex]0 = u + gt \\ gt = u \\ t = \frac{u}{g} [/tex]

since it is vertical motion, u = usin(theta), where angle is 90°

[tex]{ \boxed{t = \frac{u \sin( \theta) }{g} }}[/tex]

t is the time taken to reach the top of the launch:

substitute, taking g to be 9.8 m/s²

[tex]t = \frac{50 \times \sin(90 \degree) }{9.8} = \frac{50}{9.8} \\ \\ { \boxed{ \boxed{time = 5.10 \: seconds}}}[/tex]

Answer:

Cloud is a condensed from of atmospheric moisture consisting of small water droplets.

Clouds cause rainfall and snow fall.

Different types of clouds are found in the atmosphere. Some main types of them are cirrus, cumulus, nimbus, and stratus. Most clouds are generated by the cooling of air as it rises.

Answer:

64 m

Explanation:

use formula velocity= displacement / time

[tex]\\ \rm\longmapsto Distance=Speed\times Time[/tex]

[tex]\\ \rm\longmapsto Distance=8(8)[/tex]

[tex]\\ \rm\longmapsto Distance=64m[/tex]

Explanation:

Physics is a discipline that its applications cut across all fields. Ranging from banking, cooking, transportation, lecturing, medicine, engineering etc. It is the bed rock of engineering because all aspect of engineering involves the application of Physics.

Some of the fields where Physics is applied are:

a) Lecturing: This field requires the continuous dissemination of Physics knowledge to students from one level to another level.

b) Medicine: The various applications of physics in medicine can not be over-emphasized. This is because medicine involves the use of ultrasound, ionizing and non-ionizing radiation, magnetic resonance etc.

c) Electrical Engineering: In this field, the basic knowledge of Physics is applied to circuits, boards and electrical components.

d) Civil Engineering: The knowledge of stress, strain, shear, force, torque, weight etc are used in a lot of deductions.

e) Broadcasting station: This field make use of a lot of Physics principles so as to increase awareness and pass information. Thus the frequency of a broadcasting station determines her area coverage.

f) Transportation: As all vehicles consists of electrical devices, then the knowledge of Physics can bot be avoided.

g) Communication: Ranging from GPS, GPRS, Data transmission, voice call, email etc requires the knowledge and application of Physics.

h) Archaeology: Though not a related to Physics, but it requires the application of it. Radio-dating and carbon-dating are required to determine the age of some ancestral objects or artifacts.

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Answer:

pretty sure it is gravity

Answer:

Electricity

Explanation:

May you attach your displacement vs. time graph picture and resend the question once again then I might be able to help you

Answer:

30 m/s

Explanation:

0^2= Vi^2+ 2 (-45)(10)

The original speed of the car is equal to 30m/s which can be calculated from the third equation of motion.

Equations of motion explain the basic concept of motion such as the position, velocity, or acceleration of an object several times. These three equations of motion can be governed by the motion of an object in 1D, 2D, and 3D.

There are three equations of motion that can be used to find displacement(s), velocity (v or u), time(t), and acceleration(a). The third equation of motion can be represented as follows:

v² = u² + 2aS

Given, the car is deaccelerated by 45m/s².

The distance covered by the car before it stops, S = 10 m

The final velocity of the car, v = 0 as it comes to rest.

We have to calculate the initial velocity of the car by using the third equation of motion:

(0)² = (u)² + 2 (-45) × (10)

u²= 900

u = 30 m/s

Therefore, the original speed of the car is 30 m/s.

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Answer:

There are two main types of OTC pain medicines: acetaminophen (Tylenol) and nonsteroidal anti-inflammatory drugs (NSAIDs). Aspirin, naproxen (Aleve), and ibuprofen (Advil, Motrin) are examples of OTC NSAIDs. If OTC medicines don't relieve your pain, your doctor may prescribe something stronger

Distance = 2000m

Time = 35 minutes = 35×60 sec = 2100 sec

We know, Speed = Distance/Time

Therefore, Speed

= 2000m/2100s = 20/21 m/s

Answer: 20/21 m/s

Hope it helps! Please do comment

Answer:

It's D

Explanation:

because the kinetic energy of the turbines produces electric energy

Answer:

900,000 meters of displacement.

Explanation:

250x60x60 because it is meters per second and needs to be converted to a full hour.

Answer:

experimental data obtained by using technology to get objective measuremennts

Answer:

c please mark me as brainiest

Explanation:

Answer:

Explanation:

Answer:

the similarities is that that they both act one charged particles

Explanation:

hope that helps>3

From the table shown we can see that the substance that has a density of 10.50g/cm³ is Silver. Hence the required substance is silver

Density is the ratio of the mass of an object to its volume. Mathematically,

Density = Mass/Volume

Given the following from the question

Mass = 273g

Volume of water = 26mL

Convert the volume to cm³

1ml = 1cm³ Hence;

26mL = 26cm³

Get the density of the object

Density = 273g/26cm³

Density = 10.50g/cm³

Hence the required density is 10.50cm³. From the table shown we can see that the substance that has a density of 10.50g/cm³ is Silver. Hence the required substance is silver

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