Q2: (2 marks) (show your work)
What is the net force on the box shown below?
30 N
60 N
20 N

Answer:

1606

The main reason for using light years, however, is because the distances we deal with in space are immense. If we stick to miles or kilometers we quickly run into unwieldy numbers just measuring the distance to the nearest star: a dim red dwarf called Proxima Centauri that sits a mere 24,000,000,000,000 miles away!

Explanation:

Answer:

B. Cartridge, which includes primer powder, gunpowder, the bullet, and the

casing material that holds them all together.

Explanation:

It is right trust me.

Answer:

5.26 m/s

Explanation:

Given that,

The frequency of mosquito's wings, f = 1050 Hz

The observed frequency = 1034 Hz

We need to find the velocity of the mosquito travelling with respect to you. We have a formula to find it such that,

[tex]v=\dfrac{v}{\dfrac{f'}{f}}-v[/tex]

Where

v is the speed of sound

So,

[tex]v=\dfrac{340}{\dfrac{1034}{1050}}-340\\\\v=5.26\ m/s[/tex]

So, the required velocity is equal to 5.26 m/s/

Answer:

a is the answer to the question

Answer: the correct option is FUSE.

Explanation:

Current Electricity consists of fast moving negatively charged electrons which travels in materials that allows the flow of electrons called conductors. In the generation of Electricity for distribution, two types of currents are being generated. It's either an Alternating current ( A.C) or a Direct Current ( D.C.). An A.C. consists of electric charges that constantly changes its position and direction of flow of voltage and current while D.C. the electric charge flow in one direction. For the safety of devices of the end users of the electric current ( either A.C. or D.C) generated, a FUSE is usually used to protect the appliances from too much flow of electric current.

A fuse is therefore defined as a safety device that protects appliances( such as televisions, refrigerators, computers) from current overload or voltage fluctuations which can cause damaging effects. It is made up of thin strip or strand of metallic wire with noncombustible material. These devices are usually connected in series with the components to be protected from current overload. This is so because, when there is high or excessive current, the fuse melts and it opens the circuit and disconnects it from the power supply. Some of the types of fuse includes A.C fuse and D.C. fuse.

Answer:

(a) θ₂ = 15.4°

(b) θ₂ = 28.9°

Explanation:

Snell's Law can be written as follows:

[tex]n_1Sin\theta_1 = n_2Sin\theta_2[/tex]

where,

n₁ = incident index

n₂ = refracted index

θ₁ = Angle of incidence

θ₂ = Angle of refraction

(a)

n₁ = incident index = 1

 n₂ = refracted index = 2.42

θ₁ = Angle of incidence = 40°

θ₂ = Angle of refraction = ?

Therefore,

[tex](1)(Sin\ 40^o) = (2.42)Sin\theta_2\\\theta_{2} = Sin^{-1}(0.26561)[/tex]

θ₂ = 15.4°

(b)

n₁ = incident index = 1

n₂ = refracted index = 1.33

θ₁ = Angle of incidence = 40°

θ₂ = Angle of refraction = ?

Therefore,

[tex](1)(Sin\ 40^o) = (1.33)Sin\theta_2\\\theta_{2} = Sin^{-1}(0.4832)[/tex]

θ₂ = 28.9°

Answer:

daughters cells

Explanation:

when people refer to “cell division,” they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells. Mitosis is a type of cell division in which one cell (the mother) divides to produce two new cells (the daughters) that are genetically identical to itself.

Explanation:

By keeping the galaxies safe and not launching stuff into space hurting planets and other universes out there in the entire galaxy

Answer:

c. molecular movement

Explanation:

.....

Answer: I believe it's dispersion, diffraction, reflection of light, refraction of light, polarization of light and interference of light.

Explanation:

Answer:

Explanation:

Passion

For me, standing on the summit of Mt Everest was the result of following a process. The process of mountaineering. I love mountaineering. I am passionate about it. I love the months of planning for an expedition, the months of sweating and training to prepare my body physically. The meticulous preparation of my equipment. Most of all I love the huge mental challenge I have to overcome before each climb to confront my own fear. All these reasons are why I climb, they are why I climbed Mt Everest and that is why I continue to climb.

Passion is an enormously powerful force. It gives us the strength to get through hard times and setbacks. It gives us strength to overcome our fears, to ignore what other people think of us, to be disciplined and make sacrifices in pursuit of our dreams. Passionate people do not want to take shortcuts – they consider that ‘learning the process’ is an important part of the journey.

In mountaineering it’s easy to spot those who are not passionate about the process. They want to stand on top of the mountain but they are not really interested in the process of climbing the mountain. I feel for these people. Success without hard work is a hollow, empty feeling. They never last long in the sport.

Just as in life, successful mountaineers are the ones who are passionate. They are not there just to stand on the summit. Their passion gives them the energy to work the hardest, fight the longest, and in the words of Winston Churchill “never, never. never give-up”.

Answer: body composition is the proportion of fat and non fat mass in your body.

Explanation:

Answer:

Body composition is the percentage of a body's weight

Explanation:

Body composition is the body's amount of fat relative to fat-free mass. Individuals with optimal body composition are typically healthier, move more easily and efficiently, and generally feel better.

Answer:

Resource disposal or waste disposal is a crucial aspect of resource management.

Businesses in the manufacturing sector must develop a model of operations that allows an endless loop of internal recycling of waste and or processing waste resources into commercial resources.

A good example would be when an abattoir processes the internal organs of cows and goats with some waste gotten from rice mill into can food for dogs and canines. Waste from this secondary process can either be converted into organic manure to be sold to farmers or processed further for consumption at carnivorous fish farms.

Cheers

Answer:

I need points cri

Explanation:

Answer:

Electrons

Source:

https://kidshealth.org/en/kids/electric-shock.html#:~:text=When%20you%20touch%20a%20doorknob,quick%20movement%20of%20these%20electrons.

Answer: The acceleration due to gravity on the surface of the Moon is approximately 1.625 m/s2, about 16.6% that on Earth's surface or 0.166 ɡ.

Heres your answer.

I would use this strategy in the following ways:

Strategy is  described as a general plan to achieve one or more long-term or overall goals under conditions of uncertainty.

We have three levels of strategy and they include:

By Observing my  environment or what is there around me  that can help me, it will help me overcome any obstacle that may come my way.

Learn more about levels of strategy at:

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Answer:

When the temperature increases

Explanation:

Answer:

h = 4.905 m

Explanation:

In order to find the distance covered by the object in 1 second, we can use the second equation of motion:

[tex]h = v_i t + \frac{1}{2}gt^2\\[/tex]

where,

h = distance covered = ?

vi = initial speed = 0 m/s

g = acceleration due to gravity = 9.81 m/s²

t = time = 1 s

Therefore,

[tex]h = (0\ m/s)(1\ s)+\frac{1}{2}(9.81\ m/s^2)(1\ s)^2\\\\[/tex]

h = 4.905 m

Answer:

The correct answer is: A HARD DISK

Explanation:

Magnetic Disc stores data of different types and formats that can always be edited or erased at any time. An example of a Magnetic Disc is a Hard Disk.

A hard disk is a type of magnetic storage device inside a computer that store data magnetically usually for the long-term and it could store a large volume of data, though that depends on the size, because it comes in various size. However, it generally allows stored data to be retrieved easily.

Answer:

Coulomb = 100

Micro coulomb = 100 × 10^-6 = 10^-4 coulomb

Maritza is friendly and polite to people who enter the store where she works. She has customer-service skills.

Qualification is a special skill or experience that makes someone suitable for a certain job. It shows the level of education. Everyone gets a job according to their qualification. It is formal documentation someone gets after completing the education.

Thus, these are the qualification or skills of Maritza, Darren, and Yelena.

Learn more about qualifications, here:

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Answer:

10 °C

Explanation:

Applying

q = cm(t₂-t₁)............... Equation 2

Where q = heat energy, c = specific heat of ethanol, m = mass of ethanol, t₁ = initial temperature, t₂ = Final temperature.

Given: c = 2.44 J/g.°C,  m = 300 g, q = 14640 J, t₂ = 30°C

Substitute into equation 2 and solve for t₁

14640 = 2.44×300(30-t₁)

14640 = 732(30-t₁)

732(30-t₁) = 14640

(30-t₁)  = 14640/732

(30-t₁)  = 20

t₁ = 30-20

t₁ = 10 °C

Answer:

30°C

Explanation:

i just did it

Answer:

0.52 V

Explanation:

From Nernst equation;

Ecell =E°cell - 0.0592/n log Q

E°cell = +0.63 V

[Zn2+] =1.0 M

[Pb2+] = 2.0 x 10-4 M

n = 2

Ecell = 0.63 - 0.0592/2 log[1.0/2.0 x 10-4]

Ecell = 0.63 - 0.11

Ecell = 0.52 V

Answer:

Magnifying glass and a Petri dish.

Explanation:

Answer:

a. weathering

Explanation:

weathering is the breakdown of rocks into sediments and soil

Answer:

C

Explanation:

five main types of redox reactions: combination, decomposition, displacement, combustion, and disproportion.

synthesis is kinda the same as combination

Answer:

22500kg/m³

Explanation:

SI unit is kg/m³

1g/cm³=1000kg/m³

22.5g/cm³=?

22.5 * 1000

=22500kg/m³

Answer:

a star in andromeda

Explanation:

all of the other objects are in the milkyway (where we are) and the andromeda galaxy is 2 million light years away from us