need physics help
ASAP please!

Answer:

see below

Explanation:

let one direction be negative and the other direction be positive

so

right = positive

left = negative

up = positive

down = negative

thus

d) -80 + 100 = 20 N

e) 35 - 55 = -20 N

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Answer:

Regular Reflection:

1. Reflection from a polished surface is called regular reflection.

2. parallel rays remain parallel after reflection.

DIFFUSED REFLECTION:-

1. Reflection from a rough surface is called diffuse reflection.

2. Parallel rays do not remain parallel after reflection.

Answer:

done

Explanation:

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Answer:

i am also from Nepal do you want to become friends

Answer:

The electron cloud has a very small mass, but it makes up most of the space of the atom. The electrons have a negative charge, and the protons have a positive charge. Due to the charges in the atom, that is how the atom stays together, by attraction of the electric charges present in the atom.

Answer:

The electron cloud has a very small mass, but it makes up most of the space of the atom. The electrons have a negative charge, and the protons have a positive charge. Due to the charges in the atom, that is how the atom stays together, by attraction of the electric charges present in the atom.

I hope it's helpful!

Answer:

counting tree rings can indicate age

Explanation:

hope i helped at least a little bit :)

Answer:

has any one finished the lab yet?????

Explanation:

Answer:

B

Explanation:

just took the test

Answer:

b

Explanation:

Answer:

His third law states that for every action or force in nature there is an equal and opposite reaction.

Explanation:

The heavier the books get, the harder it is for Molly to exert enough force to move the cart.

I hope this helps!!!!!!   Please mark me brainliest!!

Answer:

dang, you are really trying to get everyone to do your heavy lifting lol.

I'll do coal. and maybe a little more.

Explanation:

Coal What is it?

Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen.

Coal How we obtain it:

Coal can be extracted from the earth either by surface mining or underground mining. Once coal has been extracted, it can be used directly (for heating and industrial processes) or to fuel power plants for electricity. If coal is less than 61 meters (200 feet) underground, it can be extracted through surface mining.

Coal Pros:

Coal is plentiful in many places and it is easy to access through mining, so people rely on it to produce energy. Coal is easy to store. Once it is mined it can be safely stored with no hazard of fire or explosion like there is with gas or oil. It is relatively easy and inexpensive to convert coal into energy.

Coal Cons:

Coal is nonrenewable.  Coal contains the most CO2 per BTU, the largest contributor to global warming.  Severe environmental, social, and health, and safety impacts of coal mining.  The devastation of the environment around coal mines is heavy.  High cost of transporting coal to centralized power plants. Coal is really dirty and not good.

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Solar What is it?

Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis.

Solar How we obtain it:

Solar technologies convert sunlight into electrical energy either through photovoltaic (PV) panels or through mirrors that concentrate solar radiation. This energy can be used to generate electricity or be stored in batteries or thermal storage.

Solar Pros:

It's clean energy. Solar power is pollution-free and causes no greenhouse gases to be emitted after installation.  It has reduced dependence on foreign oil and fossil fuels.  It is renewable clean power that is available every day of the year, even cloudy days produce some power.  It gives a return on investment unlike paying for utility bills.

Solar Cons:

Solar doesn't work at night. Solar panels are not attractive. You can't install a home solar system yourself. My roof isn't right for solar. Solar hurts the environment. Not all solar panels are high quality.

Answer:

Approximately [tex]10\; \rm m \cdot s^{-1}[/tex] at [tex]5.6^\circ[/tex] below the horizon.

(Assumption: air resistance on the ball is negligible; [tex]g = 9.81\; \rm m \cdot s^{-2}[/tex].)

Explanation:

Assume that the air resistance on the ball is negligible. The horizontal component of the velocity of the ball would stay the same at [tex]10\; \rm m \cdot s^{-1}[/tex] until the ball reaches the ground.

On the other hand, the vertical component of the ball would increase (downwards) at a rate of [tex]g = 9.81\; \rm m\cdot s^{-2}[/tex] (where [tex]g[/tex] is the acceleration due to gravity.) In [tex]0.1\; \rm s[/tex], the vertical component of the velocity of this ball would have increased by [tex]9.81\; \rm m \cdot s^{-2} \times 0.10\; \rm s = 0.981\; \rm m \cdot s^{-1}[/tex].

However, right after the ball rolled off the edge of the table, the vertical component of the velocity of this ball was [tex]0\; \rm m\cdot s^{-1}[/tex]. Hence, [tex]0.10\; \rm s[/tex] after the ball rolled off the table, the vertical component of the velocity of this ball would be [tex]0\; \rm m \cdot s^{-1} + 0.981\; \rm m\cdot s^{-1} = 0.981\; \rm m \cdot s^{-1}[/tex].

Calculate the magnitude of the velocity of this ball. Let [tex]v_{x}[/tex] and [tex]v_{y}[/tex] and denote the horizontal and vertical component of the velocity of this ball, respectively. The magnitude of the velocity of this ball would be [tex]\displaystyle \sqrt{{v_x}^{2} + {v_y}^{2}}[/tex].

At [tex]0.10\; \rm s[/tex] after the ball rolled off the table, [tex]v_x = 10\; \rm m \cdot s^{-1}[/tex] while [tex]v_y = 0.981\; \rm m \cdot s^{-1}[/tex]. Calculate the magnitude of the velocity of the ball at this moment:

[tex]\begin{aligned} \| v \| &= \sqrt{{v_x}^{2} + {v_y}^{2}} \\ &= \sqrt{\left(10\; \rm m \cdot s^{-1}\right)^{2} + \left(0.981\; \rm m \cdot s^{-1}\right)^{2}} \\ &\approx 10.0\; \rm m\cdot s^{-1}\end{aligned}[/tex].

Calculate the angle between the horizon and the velocity of the ball (a vector) at that moment. Let [tex]\theta[/tex] denote that angle.

[tex]\displaystyle \tan \theta = \frac{\text{rise}}{\text{run}}[/tex].

For the vector representing the velocity of this ball:

[tex]\displaystyle \tan \theta = \frac{0.981\; \rm m \cdot s^{-1}}{10\; \rm m \cdot s^{-1}} = 0.0981[/tex].

Calculate the size of this angle:

[tex]\theta = \arctan 0.0981 \approx 5.62^\circ[/tex].

Notice that the vertical component of the velocity of this ball at that moment points downwards (towards the ground.) Hence, the corresponding velocity should point below the horizon.

Explanation:

Is this ok?......I have got the answer in pascals.

Answer:

15 N. 5 N. 4.1 The Concepts of Force and Mass. Mass is a measure of the amount ... 275 N + 395 N – 560 N = +110 N ... If the mass of the car is 1850 kg then, by ... For two particles that have masses m1 and m2 and are ... N. Moreover, the water applies an opposing force R, whose magnitude is R = 40.0 × 103 N. The tanker ...

Explanation:

Answer:

Given =

Current = 3 ampere

Resistance = 5 ohm

Solution =

By Ohm's Law

R = V/I

V = R x I

V = 5 x 3

V = 15 volts. Answer

Answer:

C.

If he is pulled into a current, he should swim toward the shore at a 45-degree angle.

Explanation:

Answer:

Light wave is an EM wave that can only be seen by humans New questions in Physics Engineers at the Space Centre must determine the net force needed for a rockets engine to achieve an acceleration of 70 m/s2.

Explanation:

Answer:

i can see your question

pls fast

Answer:

1 watt is the same as the transfer of 1 joules per second.

1 watt is the same as the transfer of energy at a rate of 1 joule per second.

A watt is a unit of power, representing the amount of energy transferred or converted per unit of time. Specifically, 1 watt is equivalent to 1 joule of energy being transferred every second. It is a common metric used to measure the rate of energy flow or work done in various systems. For example, a 100-watt light bulb converts electrical energy into light and heat at a rate of 100 joules per second. Understanding power in terms of watts helps us quantify and compare the efficiency and performance of different devices and processes.

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Answer:

O2 has two more electrons compared to N2, with extra 2 electrons in the higher energy anti-bonding orbitals known as Diradical. These electrons have higher energy and are unpaired; therefore, O2 is more reactive

Explanation:

Answer:

O B. Oxygen needs to gain only 2 electrons to have a full octet, while nitrogen needs to gain 3.

Explanation:

Answer:

hi

Explanation:

chemical reaction: Chain reactions. Chain reactions occur in a sequence of steps, in which the product of each step is a... So-called branching chain reactions are a form of chain reaction in which the number of chain carriers increases in each propagation.

Answer:

star

Explanation:

because that is what our sun is.

Answer:

11.3 g/cm^3

Explanation:

density = mass/volume

volume of rectangular prism = length * width * height

volume = (4.50 cm)(5.20 cm)(6.00 cm) = 140.4 cm^3

mass = 1587 g

density = (1587 g)/(140.4 cm^3)

density = 11.3 g/cm^3

Answer:

Percentage of mass converted to energy = 99.9 %

Explanation:

By far most of the solar system's mass is in the Sun itself: somewhere between 99.8 and 99.9 percent. The rest is split between the planets and their satellites, and the comets and asteroids and the dust and gas surrounding our star. Seen from afar (on the scale of distances between stars) the presence of the solar system would not be obvious. We would simply see a normal-looking star. Perhaps we would pick up the presence of Jupiter, which makes up two thirds or so of the solar system outside of the Sun, by mass.

Answer:

i think it is the pacific plate

Explanation:

I hope this helps

Answer:

you need to multiply them and then you have your answer eg = 810 × 6.7 = 5427kg

Resultant force would accelerate an 810 kg mass at 6.7 m/s² 5427 N

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Given in the question,

Acceleration (a) = 6.7 m/s²

Mass (m) = 810 kg

Force (F) = ?

We know

F = M * a

F = 810 * 6.7

F = 5427 N

Resultant force would accelerate an 810 kg mass at 6.7 m/s² 5427 N

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Answer:

An excess of positive (or negative) charge causes the leaves to diverge

Bringing a neutral rod in the vicinity of the electroscope will cause some of the positive charge to leave the leaves (making the electrically neutral rod negative at the tip) causing the leaves to converge.

Answer:

c

Explanation: