Can you help me please? I'll mark brainiest

Can You Help Me Please? I'll Mark Brainiest

Answers

Answer 1

Answer:

picture isn't rlly clear :/

Answer 2

Answer:

Don't know this but I will do research


Related Questions

Please answer the following question

Answers

Answer:

Where is the resistance value?

Question is incomplete

Can you show the rest of the problems?

Please select the word from the list that best fits the definition

Does not easily transfer electricity
conductor
insulator
circuit
current

Answers

Answer:

conductor

Does not easily transfer electricity

AMICA 3º ESO 1. Un muelle elástico de constante de elasticidad de 75 N/m, tiene una longitud de 46 cm cuando se le aplica una fuerza de 7,5 N. Determinar:

Answers

Answer:

Ver explicacion

Explanation:

Primero tenemos que determinar la longitud original del resorte.

De la ley de Hooke;

F = Ke

F = fuerza aplicada

K = constante de fuerza

e = extensión

Pero extensión = longitud final - longitud original

e = F / K

e = 7,5 N / 75 Nm-1

e = 0,1 m

Por eso;

Longitud original = longitud final - extensión

Longitud original = (46 * 10 ^ -2) m - 0,1 m

Longitud original = 0,36 m

b) la mitad de la fuerza aplicada es 3.75 N pero la constante de fuerza permanece igual.

Por eso;

e = F / K

e = 3,75 N / 75 Nm-1

e = 0,05 m

Longitud final = Longitud original - extensión

Longitud final = (46 * 10 ^ -2) m - 0.05 m

Longitud final = 0,41 m

A Carnot engine uses a steam boiler at 100°C as the high-temperature reservoir. The low-temperature reservoir is the outside environment at 35.0°C. Energy is exhausted to the low-temperature reservoir at a rate of 150 W. Hint (a) Determine the efficiency of the engine. (Give your answer as a percentage.) eC = % (b) Determine the useful power output of the heat engine (in W). output = W (c) How much steam (in kg) will it cause to condense in the high-temperature reservoir in 2.00 h? condensate = kg

Answers

Answer:

(a) η = 0.1742 = 17.42 %

(b) W = 31.64 W

(c) m = 0.58 kg

Explanation:

(a)

The efficiency of a Carnot's engine is given as follows:

[tex]\eta = 1-\frac{T_2}{T_1}[/tex]

where,

η = efficiency = ?

T₁ = source temperature = 100°C + 273 = 373 K

T₂ = sink temperature = 35°C + 273 = 308 K

Therefore,

[tex]\eta = 1 - \frac{308\ k}{373\ k} \\[/tex]

η = 0.1742 = 17.42 %

(b)

Another formula for the efficiency of Carnot's Engine is:

[tex]\eta = 1 - \frac{Q_2}{Q_1}[/tex]

where,

Q₁ = Input heat rate

Q₂ = Heat rejected = 150 W

Therefore,

[tex]0.1742 = 1 - \frac{150\ W}{Q_1}\\\\ \frac{150\ W}{Q_1} = 1-0.1742\\\\Q_1 = \frac{150\ W}{0.8258}[/tex]

Q₁ = 181.64 W

Now, for the useful power output:

[tex]W = Q_1-Q_2\\W = 181.64\ W - 150\ W\\W = 31.64\ W[/tex]

where,

W = Useful Output

W = 31.64 W

(c)

The heat required to condense steam i given as:

[tex]Q = mH\\Q_1t=mH\\m = \frac{Q_1t}{H}[/tex]

where,

m = mass of steam condensed = ?

t = time = 2 h = 7200 s

H = Latent heat of condensation of steam = 2260 KJ/kg = 2260000 J/kg

Therefore,

[tex]m = \frac{(181.64\ W)(7200\ s)}{(2260000\ J/kg)}[/tex]

m = 0.58 kg

Three dogs scout sparky and dusty are playing with a teddy bear. Scout and sparky are pullung the teddy bear to the left

Answers

Answer:

To the left side.

Explanation:

The teddy bear will move towards the left side because more force is applied by scout and sparky than dusty. The reason for this movement of teddy bear  to the left is due to more force is applied by the two dogs present at the left side of the teddy bear while on the other hand, one dog is present at the right side of teddy bear which applied less force so that's why we can say that the teddy bear moves to the left side rather than to the right side.

The atomic number is equal to the number of _________ in the atom.

Question 8 options:

protons


protons and neutrons


neutrons


protons, neutrons, and electrons

Answers

Answer:

Proton

Explanation:

Atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number.

A marble is dropped into a graduated cylinder that is filled with water. Use the words

from the word bank to describe the speed and forces. Words may be used more than

once.

Point A: Speed

force

A

Point B: Speed

force

ml

Point C: Speed

force

30

B

20

is constant

increases

decreases

balanced

unbalanced

C

Answers

Answer:

v_t = [tex]\frac{2 g \ ( \rho_b - \rho_l ) r^2 }{9 \ \eta }[/tex]

Explanation:

Let's describe the motion and forces on the marble when it falls into the graduated cylinder filled with water.

Initially, the marble in the air falls under the influence of its weight (gravity force), when it enters the water, a friction force appears that INCREASES with SPEED and opposes the movement, this force is called Stokes force.

             

              Fr = 6π R η v

where η is the viscosity of water

also because of this in a liquid it has an upward thrust, given by Archimedes' law, this thrust is CONSTANT

              B = ρ_l g V_l

in that case the volume of liquid(V_l)  is equal to the volume of the marble.

Constant force of gravity

               W = mg

using the concept of density

                ρ_body = m / V

                W = ρ_body g V_body

we apply Newton's second law

                Fr + B - W = ma

the friction force increases and the other two are constant, so acceleration decreases until reaching zero, at this point the forces are in BALANCE

                Fr + B - W = 0

and the speed remains constant, being called TERMINAL SPEED

                v_t = [tex]\frac{2 g \ ( \rho_b - \rho_l ) r^2 }{9 \ \eta }[/tex]

from this point on, the displacement is proportional to the time

9. What strategies can be used to ensure that the forests are a continued

source of resources? [5]

Help me pls I’m giving brainlest and 10 points plssss

Answers

Answer:

Strategies to ensure that - forests are continued source of resources.

Explanation:

Forests continued sustainable use, ie today's use without compromising with tomorrow's needs - can be done using following strategies

By protection against Environment Degradation phenomenas - Soil Erosion (Erosion of top most fertile layer of soil), Land Degradation (Land losing its essential valuable nutrients) By ensuring that rate of extraction of forest resources is less than their replenishment rate, & our waste generation into forests is less than their absorptive capacity.

At the end of 3N force acts on the object during time interval of 1.5seconds with force acting towards right. A constant force of 4N to left is applied for 3seconds. What is the velocity at the end of the 3seconds ?

Answers

Answer:

v_f = -7.5 m / s

Explanation:

Let's analyze this exercise a little, two forces that act on a body for different time intervals are indicated, each force creates an impulse and since this is a vector quantity we must add in the form of vectors. The net momentum is

we assume that the direction to the right is positive

             I = I₁ + I₂

             I = F₁ Δt₁ - F₂ Δt₂

             I = 3  1.5 - 4  3

             I = -7.5   N s

now let's use the relationship between momentum and momentum, suppose the object starts from rest (vo = 0)

             I = Δp

             I = m (v_f - v₀)

             

             v_f = I / m

             

              v_f = -7.5 / m

to finish the calculation we must assume a mass m = 1 kg

              v_f = -7.5 m / s

the negative sign in the body is moving to the left

~Chapter Name: Heats and its effects ~
(Collecting Information)
how does a veterinary doctor (a doctor who treats animals) find out the body temperature of domestic animals or birds?
Go to the nearest veterinary clinic and find out
(I don't have a clinic near it miles away so pls help)

Answers

Answer:

Either orally or rectally

Explanation:

(I didn't visit the vet clinic, I just searched it up)

It depends on the animal. You can't check a birds temperature with a thermometer because it will rupture its cloaca gland but you can check its poop.

Answer:

thermometer is used by veterinary doctors to find out the temperature of domestic animals .

You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between your feet and the ice. A friend throws you a 0.400-kg ball that is traveling horizontally at 10.0 m/s. Your mass is 70.0 kg. (a) If you catch the ball, with what speed do you and the ball move after ward

Answers

Answer:

0.38m/s

Explanation:

Given data

M1= 0.4kg

U1= 10m/s

M2= 70kg

U2= 0m/s

The system experiences an inelastic collision, the expression for inelastic collision is

M1U1+ M2U1= (M1+M2)V

Subsitute

0.4*10+ 70*0= (0.4+10)*V

4= 10.4V

4=10.4V

V= 4/10.4

V=0.38m/s

Hence the common velocity is 0.38m/s

A juggler is throwing balls up in the air and catching them. An observer in the crowd makes the statement that the potential and kinetic energy of the ball is the same when the ball is halfway down from its highest point. In one paragraph, using your own words, explain using the relationship of mechanical energy, potential energy, and kinetic energy why the observer is correct.

Answers

Answer:

do you have the answer?

Explanation:

if so whats the answer?


Susan gently pushes the tip of her finger against the eraser on her pencil and the pencil does not move. Which of the
following figures best illustrates the interaction of forces between Susan's finger and her pencil?

Answers

Answer: D. ➡️⬅️

Explanation: I just knew the answer ;)

Which wave is carrying the most energy?​

Answers

Water waves pls brainlest

I NEED THIS ASAP I WILL MARK YOU THE BRAINLIEST NO LINKS !!!!
Newton's First Law state
For every action there is an equal and opposite reaction.
An object in motion stays in motion unless acted upon by an unbalanced force.
Gravity acts on all objects that have mass.
Force= mass x acceleration

Answers

B :) have nice day!!!! :D

the odometer of a car reads 68420 km when the clock shows the time 9 am if at 9 30 am the odometer reading has changed to 68540 calculate the speed of the car in km/min during this time

Answers

Answer:

4 km/min

Explanation:

Applying

S = (d₂-d₁)/(t₂-t₁).............. Equation 1

Where S = speed of the car, d₁ = Intial reading of the odometer, d₂ = Final reading of the odometer, t₁ = initial time, t₂ = final time.

From the question,

Given: d₁ = 68420 km, d₂ = 68540 km, t₁ = 9:00 am, t₂ = 9:30 am

Substitute these values into equation 1

S = (68540-68420)/(9:30-9:00)

S = 120/30

S = 4 km/min.

B 0.25 m A stone weighing 0.7 kilograms rolls down the inclined plane from position B to position A. Position A is located at sea level. The difference in the gravitational potential energy of the ball between positions A and B is about 9.8 N/kg. ) joules. (Use PE= mxgx h, where g​

Answers

Answer:

-1.715J

Explanation:

B: (9.8)(0.7kg)(0.25m)=1.715J

A: (9.8)(0.7kg)(0)=0J

What device is like the reverse of an electric motor?
a.
Generator
c.
Steam engine
b.
Tesla coil
d.
Battery

Answers

Answer:

a.  Generator

Explanation:

Answer:

A

Explanation:

A battery derives its energy chemically. D is not the answer.

C develops its energy by burning fuel and transferring the heat energy to make water into steam which is chemical/mechanical. Not C

B A Tesla Coil produces a very high voltage and a low current. Not B.

The answer left is A. It converts mechanical energy into electrical energy. It is the only device listed that does this.

Basketball was developed so that athletes would have a sport to play during the _________.
A. Fall
B. Winter
C. Spring
D. Summer

Answers

Answer:

B. Winter

Explanation:

Give details of aids in brief and explain how to protect yourself and prevent.

Answers

Answer:

(AIDS) is a chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV). By damaging your immune system, HIV interferes with your body's ability to fight infection and disease. HIV is a sexually transmitted infection (STI). It can also be spread by contact with infected blood or from mother to child during pregnancy, childbirth or breast-feeding.

Explanation:

To help prevent the spread of HIV: 1. Use treatment as prevention (TasP). If you're living with HIV, taking HIV medication can keep your partner from becoming infected with the virus.

An electric lamp is marked 100w 220v. What do you
understand by this? what current is taken by the lamp when it is connected to a 220v main supply. What is the resistance
of the lamp.​

Answers

Answer:

The current is "[tex]\frac{5}{11} \ A[/tex]" and resistance is "484 ohm".

Explanation:

The given values are:

Potential difference,

V = 220 v

Power,

P = 100 w

Now,

The current will be:

⇒  [tex]P=VI[/tex]

On putting the values, we get

⇒ [tex]100=220\times I[/tex]

⇒     [tex]I=\frac{100}{220}[/tex]

⇒        [tex]= \frac{5}{11}[/tex] A

then,

Resistance will be:

⇒  [tex]V=IR[/tex]

⇒  [tex]220=\frac{5}{11}\times R[/tex]

⇒     [tex]R=44\times 11[/tex]

⇒         [tex]=484[/tex] ohm

Speed of light in a medium with n > 1
is the same as in free space
is greater than in free space
is less than in free space
depends on the transparency of the medium

Answers

Answer:

C

Explanation:

Without thinking, the answer is C.

The problem is with D. Of course it is going to depend on the transparency. If the material is a rock, then the light won't go through, and n >>>1.  I don't think you are intended to think that way, but I sure wish D wasn't there. I'd answer C, but be prepared to see it come out as D.

Answer:

it and i quote you "is less than in free space

Explanation:

i cant explain

What is the eccentricity of a circle? Explain.

Answers

Answer:

eccentricity is a measure of how much a conic section deviates from being circular. In particular: The eccentricity of a circle is zero. The eccentricity of an ellipse which is not a circle is greater than zero but less than 1. ... The eccentricity of a hyperbola is greater than 1.

Answer:

One can think of the eccentricity as a measure of how much a conic section deviates from being circular. In particular: The eccentricity of a circle is zero. The eccentricity of an ellipse which is not a circle is greater than zero but less than 1. ... The eccentricity of a hyperbola is greater than 1.

How might other planets in the Solar system be studied?

Answers

Answer:

probably by robots

Explanation:

Answer:

they can be studied through telescopes, satellites, and rovers. maybe in the future spaceships

Explanation:

You are designing a new piece of fishing equipment that will allow you to catch a fish from the surface. You know that water refracts light, but in order to properly program your device, you need to know by what angle water refracts light. Describe an experiment you would conduct to determine the angle at which water refracts light.


Please help! I’ll really appreciate it! :(

Answers

Answer:

Law of refraction

Explanation:

An experiment to analyze the refraction of light in water can easily be performed with a laser pointer and protractor.

We throw the fishing rod line into the water, place the protractor at the point where the line touches the water and use the direction of the line for the direction of the laser pointer (on), the laser is visible by the reflection on the particles in the air.

The vertical line is called Normal and all angles must be measured with respect to this reference in optics.

Having these angles and the refractive index of water we can use the law of refraction

         n₁ sin θ₁  = n₂ sin θ₂

         θ₂ = [tex]sin^{-1} ( \frac{n_1}{n_2} \ sin \ \theta_1 )[/tex]

we can repeat several times to analyze several different input points (different angles) and to decrease the errors in the measurements.

the refractive index of air is n1 = 1 and n2= 1.33  (water)

A 1.25 m long pendulum on Mars
has a period of 3.65 s. What is the
acceleration of gravity g on Mars?
(Unit = m/s^2)
Help please

Answers

Explanation:

[tex]period = 2\pi \sqrt{ \frac{length}{g} } [/tex]

[tex]3.65 \: s = 2\pi \sqrt{ \frac{(1.25 \: m)}{g} } [/tex]

Squaring both sides and solving for g, we get

g = 3.70 m/s^2

which is close to what is expected (3.71 m/s^2).

Which best illustrates how the carrier wave would appear after pulse modulation?

Answer is the second one

Answers

After extensive, detailed calculation, contemplation, investigation, and consideration, my tentative guess is that the second choice is the correct one.

At one moment during its flight a thrown basketball experiences a gravitational force of 1.5N down and air resistance of 0.40N(32 degree above horizontal). Calculate the magnitude and direction of of the net force of the ball

Answers

Answer:

1. The magnitude of the net force is 1.33 N.

2. The direction is 14.8° with respect to the vertical.        

Explanation:

1. The magnitude of the net force is given by:

[tex] |F| = \sqrt{F_{x}^{2} + F_{y}^{2}} [/tex]

Where:

[tex]F_{x}[/tex]: is the sum of the forces acting in the x-direction

[tex]F_{y}[/tex]: is the sum of the forces acting in the y-direction

Let's find the forces acting in the x-direction and in the y-direction.

In the x-direction:

[tex] \Sigma F_{x} = -F_{a}cos(\theta) [/tex]

Where:

Fa: is the force of air resistance = -0.40 N. The negative sign is because this force is in the negative x-direction.  

θ: is the angle = 32°

[tex] \Sigma F_{x} = -0.40 N*cos(32) = -0.34 N [/tex]

In the y-direction:

[tex] \Sigma F_{y} = F_{g} + F_{a}sin(\theta) [/tex]

Where:

[tex]F_{g}[/tex]: is the gravitational force = -1.5 N

[tex] \Sigma F_{y} = -1.5 N + 0.40 N*sin(32) = -1.29 N [/tex]

Hence, the magnitude of the net force is:

[tex] |F| = \sqrt{(-0.34 N)^{2} + (-1.29)^{2}} = 1.33 N [/tex]

2. The direction of the net force is:

[tex] tan(\alpha) = \frac{F_{x}}{F_{y}} = \frac{-0.34}{-1.29} [/tex]

[tex] \alpha = tan^{-1}(\frac{-0.34}{-1.29}) = 14.8 [/tex]

The angle is 14.8° with respect to the vertical.

I hope it helps you!

What is meant by a quark’s “flavor”?

a the type of quark
b the color charge of the quark
c the size of the quark
d how a quark tastes

Answers

Answer:

b

Explanation:

because a quark have many kinds of flavor

Answer:

[tex]\Large \text{A}[/tex]

Explanation:

Flavor is the name given by scientists which refers to the type of quark.


Which is the correct Lewis structure for ethylene, CHA?
H
H
H H
1
CEC
1 1
H
H
C
C:
H
A.
H
B.
H
н
H
1
С
с
C.
С
1
н
H
H
C.
H
D
•HlclH|
H
I-Ö-I
E
ΟΑ. Α A
OB.
B
Ос. с
ODD
ОЕ Е E

Answers

Answer:

:c: H* : A: :C: H* :A: :C: H* :A:

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